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Summary of significant accounting policies (Policies) | 12 Months Ended
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Dec. 31, 2023
Accounting Policies [Abstract] |
Basis of presentation | Basis of presentation The accompanying consolidated financial statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (“SEC”), regarding financial reporting, and include all normal and recurring adjustments that management of the Company considers necessary for a fair presentation of its financial position and operation results.
Principles of consolidation | Principles of consolidation The consolidated financial statements include the financial statements of the Company and its subsidiaries, which include the wholly-foreign owned enterprise (“WFOE”) over which the Company exercises control and, when applicable, entities for which the Company has a controlling financial interest or is the primary beneficiary. All transactions and balances among the Company and its subsidiaries have been eliminated upon consolidation.
Use of estimates and assumptions | Use of estimates and assumptions The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities as of the date of the consolidated financial statements and the reported amounts of revenues and expenses during the periods presented. Significant accounting estimates reflected in the Company’s consolidated financial statements include the useful lives of property and equipment and intangible assets, impairment of long-lived assets and goodwill, allowance for doubtful accounts, provision for contingent liabilities, revenue recognition, right-of-use assets and lease liabilities, deferred taxes and uncertain tax position, purchase price allocations for business combination, the fair value of contingent consideration related to business acquisitions. Actual results could differ from these estimates.
Foreign currency translation and other comprehensive income (loss) | Foreign currency translation and other comprehensive income (loss) The reporting currency of the Company was US Dollor (“USD”) for the years ended December 31, 2021 and December 31, 2022. On June 30, 2023, the Company determined that it would qualify as a foreign private issuer, as that term is defined in Rule 3b-4(c) promulgated under the Securities Exchange Act of 1934, beginning as of July 1, 2023. The Company therefore changed its reporting currency from USD to Chinese Renminbi (“RMB”) as of June 30, 2023. To enhance comparability of its consolidated financial statement, the Company presented financial information in both RMB and USD for the year ended December 31, 2023 as additional information to the reader. Pursuant to Accounting Standards Codification (“ASC”) 830 “Foreign Currency Matters”, the Company determined that its functional currency is RMB. MicroCloud and its Hong Kong subsidiaries, Quantum Edge HK Limited, Broadvision HK, Ocean HK and Mcloudvr HK, maintain their book and records in USD, hence their financial information were translated into RMB in preparation of the consolidated financial statements. Assets and liabilities are translated at the exchange rates on the balance sheet date, equity amounts are translated at historical exchange rates, and revenues, expenses, gains and losses are translated using the average rate for the period. Translation adjustments included in accumulated other comprehensive loss amounted to RMB 3,182,525 and RMB 1,365,466 as of December 31, 2022 and 2023, respectively. The balance sheet amounts, with the exception of shareholders’ equity at December 31, 2022 and 2023 were translated at USD 1.00 to 6.8972 and to 7.0827, respectively. The average translation rates applied to statement of income accounts for the years ended December 31, 2021, 2022 and 2023 were USD 1.00 to RMB 6.3721, RMB 6.7290 and 7.0467, respectively. The shareholders’ equity accounts were stated at their historical rate. Cash flows are also translated at average translation rates for the periods, therefore, amounts reported on the statement of cash flows will not necessarily agree with changes in the corresponding balances on the consolidated balance sheets.
Cash and cash equivalents | Cash and cash equivalents Cash and cash equivalents primarily consist of bank deposits with original maturities of three months or less, which are unrestricted as to withdrawal and use. Cash and cash equivalents also consist of funds earned from the Company’s operating revenues which were held at third party platform fund accounts which are unrestricted as to immediate use or withdraw. The Company maintains most of its bank accounts in the PRC.
Accounts receivable, net | Accounts receivable, net Accounts receivable include trade accounts due from customers. Accounts are considered overdue after 90 days. Management reviews its receivables on a regular basis to determine if the bad debt allowance is adequate and provides allowance when necessary. The allowance is based on management’s best estimates of specific losses on individual customer exposures, as well as the historical trends of collections. Account balances are charged off against the allowance after all means of collection have been exhausted and the likelihood of collection is not probable. As of December 31, 2023 and 2022, the Company has RMB 4,588,786 and RMB 4,862,941 of allowance for doubtful accounts for accounts receivable, respectively.
Short term investments | Short term investments Short-term investments are investments in wealth management product with underlying in cash, bonds and equity funds. The investments can be redeemed any time and the investment was recorded at fair value. The gain (loss) from sale of any investments and fair value change are recognized in the statements of income and comprehensive income.
Inventories | Inventories Inventories are comprised of finished goods and are stated at the lower of cost or net realizable value using the weighted average method. Management reviews inventories for obsolescence and cost in excess of net realizable value periodically when appropriate and records a reserve against the inventory when the carrying value exceeds net realizable value. As of December 31, 2023 and 2022, the Company has an allowance of RMB176,459 and RMB176,459, respectively.
Prepaid services fees | Prepaid services fees Prepaid services fees are mainly payments made to vendors or services providers for future services. These amounts are refundable and bear no interest. Prepaid services fees also include money deposited with certain channel providers to ensure the contents of the advertisement do not violate the terms of the channel providers. The deposits usually have one year term and are refundable upon contract termination. Management reviews its prepaid services fees on a regular basis to determine if the allowance is adequate and adjusts the allowance when necessary. As of December 31, 2022 and 2023, no allowance was deemed necessary.
Prepayments, other current assets and deposits, net | Prepayments, other current assets and deposits, net Prepayments and other current assets are mainly payments made to vendors or service providers for purchasing goods or services that have not been received or provided, deposits for rent and utilities and employee advances. This amount is refundable and bears no interest. Prepayment and deposit are classified as either current or non-current based on the terms of the respective agreements. These advances are unsecured and are reviewed periodically to determine whether their carrying value has become impaired. As of December 31, 2023 and 2022, the Company made Nil and RMB 3,300 allowance for noncurrent prepayments and deposits, respectively.
Property and equipment, net | Property and equipment, net Property and equipment are stated at cost less accumulated depreciation and impairment if applicable. Depreciation is computed using the straight-line method over the estimated useful lives of the assets with 5% residual value. The estimated useful lives are as follows:
Schedule of estimated useful lives |  |
|  | Useful Life
Office equipment |  | 3 years
Mechanical equipment |  | 3 – 5 years
Electronic equipment |  | 3 – 5 years
Cost method investments | Cost method investments The Company accounts for investments with less than 20% of the voting shares and does not have the ability to exercise significant influence over operating and financial policies of the investee using the cost method. The Company records cost method investments at the historical cost in its consolidated financial statements and subsequently records any dividends received from the net accumulated earrings of the investee as income. Dividends received in excess of earnings are considered a return of investment and are recorded as reduction in the cost of the investments. Cost method investments are evaluated for impairment when facts or circumstances indicate that the fair value of the long-term investments is less than its carrying value. An impairment is recognized when a decline in fair value is determined to be other-than-temporary. The Company reviews several factors to determine whether a loss is other-than-temporary. These factors include, but are not limited to, the: (i) nature of the investment; (ii) cause and duration of the impairment; (iii) extent to which fair value is less than cost; (iv) financial condition and near term prospects of the investments; and (v) ability to hold the security for a period of time sufficient to allow for any anticipated recovery in fair value.
Intangible assets, net | Intangible assets, net The Company’s intangible assets with definite useful lives primarily consist of customer relationships, software, and non-competing agreements. Identifiable intangible assets resulting from the acquisitions of subsidiaries accounted for using the purchase method of accounting are estimated by management based on the fair value of assets received. The Company amortizes its intangible assets with definite useful lives over their estimated useful lives and reviews these assets for impairment. The Company typically amortizes its intangible assets with definite useful lives on a straight-line basis over the shorter of the contractual terms or the estimated useful lives of three to ten years.
Goodwill | Goodwill Goodwill represents the excess of the consideration paid of an acquisition over the fair value of the net identifiable assets of the acquired subsidiaries at the date of acquisition. Goodwill is not amortized and is tested for impairment at least annually, more often when circumstances indicate impairment may have occurred. Goodwill is carried at cost less accumulated impairment losses. If impairment exists, goodwill is immediately written off to its fair value and the loss is recognized in the consolidated statements of operations and comprehensive loss. Impairment losses on goodwill are not reversed. The Company reviews the carrying value of intangible assets not subject to amortization, including goodwill, to determine whether impairment may exist annually or more frequently if events and circumstances indicate that it is more likely than not that an impairment has occurred. The Company has the option to assess qualitative factors to determine whether it is necessary to perform further impairment testing in accordance with ASC 350-20, as amended by ASU 2017-04. If the Company believes, as a result of the qualitative assessment, that it is more likely than not that the fair value of the reporting unit is less than its carrying amount, then the impairment test described below is required. The Company compares the fair values of each reporting unit to its carrying amount, including goodwill. If the fair value of each reporting unit exceeds its carrying amount, goodwill is not considered to be impaired. If the carrying amount of a reporting unit exceeds its fair value, impairment is recognized for the difference, limited to the amount of goodwill recognized for the reporting unit. Estimating fair value is performed by utilizing various valuation techniques, with the primary technique being a discounted cash flow.
Impairment for long-lived assets | Impairment for long-lived assets Long-lived assets, including property and equipment and intangible assets with finite lives are reviewed for impairment whenever events or changes in circumstances (such as a significant adverse change to market conditions that will impact the future use of the assets) indicate that the carrying value of an asset may not be recoverable. The Company assesses the recoverability of the assets based on the undiscounted future cash flows the assets are expected to generate and recognize an impairment loss when estimated undiscounted future cash flows expected to result from the use of the asset plus net proceeds expected from disposition of the asset, if any, are less than the carrying value of the asset. If an impairment is identified, the Company would reduce the carrying amount of the asset to its estimated fair value based on a discounted cash flows approach or, when available and appropriate, to comparable market values.
Business combination | Business combination The purchase price of an acquired company is allocated between tangible and intangible assets acquired and liabilities assumed from the acquired business based on their estimated fair values, with the residual of the purchase price recorded as goodwill. Transaction costs associated with business combinations are expensed as incurred, and are included in general and administrative expenses in the Company’s consolidated statements of operations. The results of operations of the acquired business are included in the Company’s operating results from the date of acquisition.
Fair value measurement | Fair value measurement The accounting standard regarding fair value of financial instruments and related fair value measurements defines financial instruments and requires disclosure of the fair value of financial instruments held by the Company. The accounting standards define fair value, establish a three-level valuation hierarchy for disclosures of fair value measurement and enhance disclosure requirements for fair value measures. The three levels are defined as follow:
| ● | Level 1 inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets.
| ● | Level 2 inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the assets or liability, either directly or indirectly, for substantially the full term of the financial instruments.
| ● | Level 3 inputs to the valuation methodology are unobservable and significant to the fair value.
Warrants liabilities | Warrants liabilities The Company accounts for warrants (Public Warrants or Private Warrants) as either equity-classified or liability-classified instruments based on an assessment of the warrant’s specific terms and applicable authoritative guidance in Financial Accounting Standards Board (“FASB”) ASC 480 and ASC 815, “Derivatives and Hedging” (“ASC 815”). The assessment considers whether the warrants are freestanding financial instruments pursuant to ASC 480, meet the definition of a liability pursuant to ASC 480, and whether the warrants meet all of the requirements for equity classification under ASC 815, including whether the warrants are indexed to the Company’s own ordinary shares and whether the warrant holders could potentially require “net cash settlement” in a circumstance outside of the Company’s control, among other conditions for equity classification. This assessment, which requires the use of professional judgment, is conducted at the time of warrant issuance and as of each subsequent quarterly period end date while the warrants are outstanding. For issued or modified warrants that meet all of the criteria for equity classification, the warrants are required to be recorded as a component of equity at the time of issuance. For issued or modified warrants that do not meet all the criteria for equity classification, the warrants are required to be recorded as liabilities at their initial fair value on the date of issuance, and each balance sheet date thereafter. Changes in the estimated fair value of the warrants are recognized as a non-cash gain or loss on the consolidated statements of operations. The Company has elected to account for its Public Warrants as equity and the Private Warrants as liabilities.
Revenue recognition | Revenue recognition Effective January 1, 2019, the Company adopted ASC Topic 606 using the modified retrospective adoption method. Based on the requirements of ASC Topic 606, revenue is recognized when control of the promised goods or services is transferred to the customers in an amount that reflects the consideration the Company expects to be entitled to receive in exchange for those goods or services. The Company primarily sells its products to hospitals and medical equipment companies. Revenue is recognized when the following 5-step revenue recognition criteria are met:
| 1) | Identify the contract with a customer
| 2) | Identify the performance obligations in the contract
| 3) | Determine the transaction price
| 4) | Allocate the transaction price
| 5) | Recognize revenue when or as the entity satisfies a performance obligation
The Company’s revenue recognition policies effective upon the adoption of ASC 606 are as follows:
| (i) | Holographic Solutions
| a. | Holographic Technology LiDAR Products
The Company generates LiDAR revenue through selling integrated circuit board embedded with holographic software. The Company typically enters into written contracts with its customer where the rights of the parties, including payment terms, are identified and sales prices to the customers are fixed with no separate sales rebate, discount, or other incentive and no right of return exists on sales of inventory. The Company’s performance obligation is to deliver products according to contract specifications. The Company recognizes product revenue at a point in time when the control of products is transferred to customers.
| b. | Holographic Technology Intelligence Vision software and Technology Development Service
The Company generates revenue by developing ADAS software and technology, which are generally on a fixed-priced basis. The Company has no alternative use for the customized software and the Company has an enforceable right to payment for performance completed to date. Revenues from ADAS software development contracts are recognized over time during the contract period based on the Company’s measurement of progress towards completion using input method, which is usually measured by comparing labor hours expended to date to total estimated labor hours needed to satisfy the performance obligation. Assumptions, risks and uncertainties inherent in the estimates used to measure progress could affect the amount of revenues, receivables and deferred revenues at each reporting period. The Company has a long history of developing various ADAS software resulting in its ability to reasonably estimate the progress toward completion on each fixed price customized contracts.
| c. | Holographic Technology Licensing and Content Products
The Company provides holographic content products and holographic software for music videos, shows, and commercials on a fixed-price basis. These contents and software are generally pre-developed and exist when made available to the customer. Content products are delivered through its website or offline using hard drive. Revenues from licensing and content products are recognized at the point in time when the control of products or services is transferred to customers. No upgrades, maintenance, or any other post-contract customer support are provided.
| d. | Holographic Technology Hardware Sales
The Company is a distributer of holographic hardware and generates revenue through resale. In accordance with ASC 606, revenue recognition: principal agent consideration, an entity is a principal if it controls the specified good or service before that good or service is transferred to a customer. Otherwise, the entity is an agent in the transaction. The Company evaluates three indicators of control in accordance with ASU 2016-08: 1) For hardware sales, the Company is the most visible entity to customers and assumes fulfilment risk and risks related to the acceptability of products, including addressing customer complaints directly and handling of product returns or refunds directly. 2) The Company assumes inventory risk after taking the title from vendors and is responsible for product damage during shipment period prior to acceptance of its customers and is also responsible for product return if the customer is not satisfied with the products. 3) The Company determines the resale price of hardware products. 4) The Company is the party that directs the use of the inventory and can prevent the vendor from transferring the product to a customer or to redirect the products to a different customer. After evaluating the above scenario, the Company considers itself the principal of these arrangements and records hardware sales revenue on a gross basis. Hardware sales contracts are on a fixed price basis with no separate sales rebate, discount, or other incentive. Revenue is recognized at a point in time when the Company has delivered products and the acceptance by its customer with no future obligation. The Company generally permits returns of products due to deficits; however, returns are historically insignificant.
| (ii) | Holographic Technology Service
Holographic advertisements are the use of holographic technology integrated into advertisements on media platforms and offline display. The Company enters advertising contracts with advertisers to promote merchandises and services where the price, which is generally based on cost per action (“CPA”), is fixed and determinable. The Company provides its advertising service to channel providers where the amounts cost per action are also fixed and determinable. Revenue is recognized at a point of time when agreed actions are performed. The Company considers itself as provider of the services under the CPA model as it has the control of the services at any time before it is transferred to the customers which is evidenced by 1) having a right to a service to be performed by the other party, which gives the Company the ability to direct that party to provide the service to the customers on the Company’s behalf. 2) having discretion in setting the price for the service 3) billing monthly advertising fee directly to customers by settling valid CPA data with customers. Therefore, the Company acts as the principal of these arrangements and reports revenue earned and costs incurred related to these transactions on a gross basis. The Company also provides advertisement services through influencers on social networks. The Company charges advertisers a fixed rate, which is generally a fixed percentage of total value of merchandise sold over a specific period (“GMV”). Revenue is recognized at a point of time when merchandise is sold through social network. The Company’s SDK service is a collection of software development tools in one installable package that enables customers (usually software developers) to add holographic functionality and run holographic advertisements in their APPs or software. SDK contracts are primarily on a fixed rate basis, or cost per SDK Connection. The Company recognizes SDK service revenue at a point in time when a user completes an SDK connection via a designated portal. Service fees are generally billed monthly based on per-connection basis. The Company also provides game promotion services for game developers and licensed game operators. The Company acted as a marketing channel that it will promote the games through in-house or third-party platforms, from which users can download the mobile and purchase virtual currency for in game premium features to enhance their game playing experience. The Company contracts with third party payment platforms for collection services offered to game players who have purchased virtual currency. The game developers, licensed operator, payment platforms and the marketing channels are entitled to profit sharing based on a prescribed percentage of the gross amount charged to the game players. The Company’s obligation in the promotion services is completed at a point in time when the game players made a payment to purchase virtual currency. The Company considered itself an agent in these arrangements since it does not control the services at any time. Accordingly, the Company records the game promotion service revenue on a net basis. Contract balances The Company records receivable related to revenue when it has an unconditional right to invoice and receive payment. Payments received from customers before all the relevant criteria for revenue recognition met are recorded as deferred revenue. The Company’s disaggregated revenue streams are summarized and disclosed in Note 17.
Cost of revenues | Cost of revenues For holographic solutions, the cost of revenue consists primarily of the costs of hardware products sold and outsourced content providers, third party software development costs, and compensation expenses for the Company’s professionals. For holographic technology service, the cost of revenue consists primarily of costs paid to channel distributors for advertising services and compensation expenses for the Company’s professionals.
Advertising costs | Advertising costs Advertising costs are expensed as incurred and included in selling expenses. Advertising costs are historically immaterial to the Company’s operating expenses. Advertising costs amounted to RMB 148,521, RMB 3,735,551 and RMB 2,727,591 for the years ended December 31, 2021,2022 and 2023, respectively.
Research and development | Research and development Research and development expenses include salaries and other compensation-related expenses to the Company’s research and product development personnel, outsourced subcontractors, as well as office rental, depreciation and related expenses for the Company’s research and product development team.
Value added taxes (“VAT”) | Value added taxes (“VAT”) Revenue represents the invoiced value of service, net of VAT. VAT is based on the gross sales price. The VAT rate is 6% on services and 13% on goods in China. Entities that are VAT general taxpayers are allowed to offset qualified input VAT paid to suppliers against their output VAT liabilities. Net VAT balance between input VAT and output VAT is recorded in taxes payable. All of the VAT returns filed by the Company’s subsidiaries in China, have been and remain subject to examination by the tax authorities for five years from the date of filing.
Income taxes | Income taxes The Company accounts for current income taxes in accordance with the laws of the relevant tax authorities. The charge for taxation is based on the results for the fiscal year as adjusted for items, which are non-assessable or disallowed. It is calculated using tax rates that have been enacted or substantively enacted by the balance sheet date. Deferred taxes is accounted for using the asset and liability method in respect of temporary differences arising from differences between the carrying amount of assets and liabilities in the consolidated financial statements and the corresponding tax basis used in the computation of assessable tax profit. In principle, deferred tax liabilities are recognized for all taxable temporary differences. Deferred tax assets are recognized to the extent that it is probable that taxable profit will be available against which deductible temporary differences can be utilized. Deferred tax is calculated using tax rates that are expected to apply to the period when the asset is realized or the liability is settled. Deferred tax is charged or credited in the income statement, except when it is related to items credited or charged directly to equity, in which case the deferred tax is also dealt with in equity. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion or all of the deferred tax assets will not be realized. Current income taxes are provided for in accordance with the laws of the relevant taxing authorities. An uncertain tax position is recognized as a benefit only if it is “more likely than not” that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount recognized is the largest amount of tax benefit that is greater than 50% likely of being realized on examination. For tax positions not meeting the “more likely than not” test, no tax benefit is recorded. No penalties and interest incurred related to underpayment of income tax are classified as income tax expense in the period incurred.
Other Income, net | Other Income, net Other Income includes government subsidies which are amounts granted by local government authorities as an incentive for companies to promote development of the local technology industry. The Company receives government subsidies related to government sponsored projects and records such government subsidies as a liability when it is received. The Company records government subsidies as other income when there is no further performance obligation. Total government subsidies amounted to RMB 76,988, RMB 478,809 and RMB 844,332 for the years ended December 31, 2021, 2022 and 2023, respectively.
Leases | Leases Effective January 1, 2022, the Company adopted ASU 2016-02, “Leases” (Topic 842), and elected the practical expedients that does not require us to reassess: (1) whether any expired or existing contracts are, or contain, leases, (2) lease classification for any expired or existing leases and (3) initial direct costs for any expired or existing leases. For lease terms of twelve months or fewer, a lessee is permitted to make an accounting policy election not to recognize lease assets and liabilities. The Company also adopted the practical expedient that allows lessees to treat the lease and non-lease components of a lease as a single lease component. On January 1, 2022, the Company recognized approximately RMB 5.7 million (USD 0.9 million) of right of use (“ROU”) assets and approximately RMB 5.7 million (USD 0.9 million) of operating lease liabilities based on the present value of the future minimum rental payments of leases, using incremental borrowing rate of 5.6% to 7%. The Company determines if a contract contains a lease at inception. US GAAP requires that the Company’s leases be evaluated and classified as operating or finance leases for financial reporting purposes. The classification evaluation begins at the commencement date and the lease term used in the evaluation includes the non-cancellable period for which the Company has the right to use the underlying asset, together with renewal option periods when the exercise of the renewal option is reasonably certain and failure to exercise such option which result in an economic penalty. All of the Company’s real estate leases are classified as operating leases. When determining the lease payments for an operating lease transitioning to ASC 842 using the effective date, it’s based on future payments at the transition date, based on the present value of lease payments over the remaining lease term. Since the implicit rate for the Company’s leases is not readily determinable, the Company use its incremental borrowing rate based on the information available at the commencement date in determining the present value of lease payments. The incremental borrowing rate is the rate of interest that the Company would have to pay to borrow, on a collateralized basis, an amount equal to the lease payments, in a similar economic environment and over a similar term. Lease terms used to calculate the present value of lease payments generally do not include any options to extend, renew, or terminate the lease, as the Company does not have reasonable certainty at lease inception that these options will be exercised. The Company generally considers the economic life of its operating lease ROU assets to be comparable to the useful life of similar owned assets. The Company has elected the short-term lease exception, therefore operating lease ROU assets and liabilities do not include leases with a lease term of twelve months or less. Its leases generally do not provide a residual guarantee. The operating lease ROU asset also excludes lease incentives. Lease expense is recognized on a straight-line basis over the lease term. The Company reviews the impairment of its ROU assets consistent with the approach applied for its other long-lived assets. The Company reviews the recoverability of its long-lived assets when events or changes in circumstances occur that indicate that the carrying value of the asset may not be recoverable. The assessment of possible impairment is based on its ability to recover the carrying value of the asset from the expected undiscounted future pre-tax cash flows of the related operations. The Company has elected to include the carrying amount of operating lease liabilities in any tested asset group and include the associated operating lease payments in the undiscounted future pre-tax cash flows.
Share-based compensation | Share-based compensation The Company records share-based compensation expense for employees by allocations from MicroCloud using a proportional cost allocation method by considering the headcount and its estimates of each employee’s time attributable to the Company. The share-based compensation expenses are valued at fair value on the grant date when the reward is approved. Share-based compensation is recognized net of forfeitures, as amortized expense on a straight-line basis over the requisite service period, which is the vesting period. The Company accounts for share-based compensation expenses using an estimated forfeiture rate at the time of grant and revising, if necessary, in subsequent periods if actual forfeitures differ from initial estimates. Share-based compensation expenses are recorded net of estimated forfeitures such that expenses are recorded only for those share-based awards that are expected to vest.
Employee benefit | Employee benefit The full-time employees of the Company are entitled to staff welfare benefits including medical care, housing fund, pension benefits, unemployment insurance and other welfare, which are government mandated defined contribution plans. The Company is required to accrue for these benefits based on certain percentages of the employees’ respective salaries, subject to certain ceilings, in accordance with the relevant PRC regulations, and make cash contributions to the state-sponsored plans out of the amounts accrued. Total expenses for the plans were RMB 3,414,706, RMB 4,630,467 and RMB 1,512,164 for the years ended December 31, 2021, 2022 and 2023, respectively.
Non-controlling interests | Non-controlling interests Our non-controlling interests represent the minority shareholders’ ownership interests related to our subsidiaries, including 44% for Ocean HK and its subsidiaries. The non-controlling interests are presented in the consolidated balance sheets separately from equity attributable to our shareholders. Non-controlling interests in the results of us are presented on the consolidated statement of income as allocations of the total income or loss for the year ended December 31, 2023 between non-controlling interest holders and our shareholders. Non-controlling interests consist of the following:
Schedule of noncontrolling interests |  |  |  |  |  |  |  |  |  |  |  |
|  | December 31, 2022 |  |  | December 31, 2023 |  |  | December 31, 2023 |
|  | RMB |  |  | RMB |  |  | USD |
Ocean HK |  |  | 291,921 |  |  |  | 86,196 |  |  |  | 14,187 |
Total non-controlling interests |  |  | 291,921 |  |  |  | 86,196 |  |  |  | 14,187 |
Earnings per share | Earnings per share The Company computes earnings per share (“EPS”) in accordance with ASC 260, “Earnings per Share”. ASC 260 requires companies to present basic and diluted EPS. Basic EPS is measured as net income divided by the weighted average ordinary share outstanding for the period. Diluted EPS presents the dilutive effect on a per share basis of the potential ordinary shares (e.g., convertible securities, options and warrants) as if they had been converted at the beginning of the periods presented, or issuance date, if later. Potential ordinary shares that have an anti-dilutive effect (i.e., those that increase income per share or decrease loss per share) are excluded from the calculation of diluted EPS.
Statutory reserves | Statutory reserves Pursuant to the laws applicable to the PRC, PRC entities must make appropriations from after-tax profit to the non-distributable “statutory surplus reserve fund”. Subject to certain cumulative limits, the “statutory surplus reserve fund” requires annual appropriations of 10% of after-tax profit until the aggregated appropriations reach 50% of the registered capital (as determined under accounting principles generally accepted in the PRC (“PRC GAAP”) at each year-end). For foreign invested enterprises and joint ventures in the PRC, annual appropriations should be made to the “reserve fund”. For foreign invested enterprises, the annual appropriation for the “reserve fund” cannot be less than 10% of after-tax profits until the aggregated appropriations reach 50% of the registered capital (as determined under PRC GAAP at each year-end). If the Company has accumulated loss from prior periods, the Company is able to use the current period net income after tax to offset against the accumulate loss.
Segment reporting | Segment reporting FASB ASC 280, Segment Reporting, establishes standards for reporting information about operating segments on a basis consistent with the Company’s internal organizational structure as well as information about geographical areas, business segments and major customers in financial statements for details on the Company’s business segments. The Company’s chief operating decision maker is the Chief Executive Officer, who reviews the financial information of the separate operating segments when making decisions about allocating resources and assessing the performance of the group. Majority of the Company's business activities are carried out in PRC, hence no geographical segment is disclosed. The Company has determined two operating segments: (1) Holographic solutions, and (2) Holographic technology service.
Recently issued accounting pronouncements | Recently issued accounting pronouncements In May 2019, the FASB issued ASU 2019-05, which is an update to ASU Update No. 2016-13, Financial Instruments — Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which introduced the expected credit losses methodology for the measurement of credit losses on financial assets measured at amortized cost basis, replacing the previous incurred loss methodology. The amendments in Update 2016-13 added Topic 326, Financial Instruments — Credit Losses, and made several consequential amendments to the Codification. Update 2016-13 also modified the accounting for available-for-sale debt securities, which must be individually assessed for credit losses when fair value is less than the amortized cost basis, in accordance with Subtopic 326-30, Financial Instruments — Credit Losses — Available-for-Sale Debt Securities. The amendments in this Update address those stakeholders’ concerns by providing an option to irrevocably elect the fair value option for certain financial assets previously measured at amortized cost basis. For those entities, the targeted transition relief will increase comparability of financial statement information by providing an option to align measurement methodologies for similar financial assets. Furthermore, the targeted transition relief also may reduce the costs for some entities to comply with the amendments in Update 2016-13 while still providing financial statement users with decision-useful information. In November 2019, the FASB issued ASU No. 2019-10, which to update the effective date of ASU No. 2016-02 for private companies, not-for-profit organizations and certain smaller reporting companies applying for credit losses, leases, and hedging standard. The new effective date for these preparers is for fiscal years beginning after December 15, 2022. The adoption of this ASU does not have a material effect on the Company’s consolidated financial statements. In October 2020, the FASB issued ASU 2020-08, “Codification Improvements to Subtopic 310-20, Receivables — Nonrefundable Fees and Other Costs”. The amendments in this Update represent changes to clarify the Codification. The amendments make the Codification easier to understand and easier to apply by eliminating inconsistencies and providing clarifications. ASU 2020-08 is effective for the Company for annual and interim reporting periods beginning July 1, 2021. Early application is not permitted. All entities should apply the amendments in this Update on a prospective basis as of the beginning of the period of adoption for existing or newly purchased callable debt securities. These amendments do not change the effective dates for Update 2017-08. The adoption of this new standard does not have material impact on Company’s consolidated financial statements and related disclosures. In October 2021, the FASB issued ASU 2021-08, “Business Combinations”. The amendments in this Update address how to determine whether a contract liability is recognized by the acquirer in a business combination and resolve the inconsistency of measuring revenue contracts with customers acquired in a business combination by providing specific guidance on how to recognize and measure acquired contract assets and contract liabilities from revenue contracts in a business combination. The amendments in this Update apply to all entities that enter into a business combination within the scope of Subtopic 805-10, Business Combination-Overalls. For public business entities, ASU 2021-08 is effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. Early application is permitted. The amendments in this Update should be applied prospectively to business combinations occurring on or after the effective date of the amendments. The adoption of this ASU did not have a material impact on the Company’s consolidated financial statements. Except as mentioned above, the Company does not believe other recently issued but not yet effective accounting standards, if currently adopted, would have a material effect on the Company’s consolidated balance sheets, statements of income and comprehensive income and statements of cash flows.

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