XML 50 R40.htm IDEA: XBRL DOCUMENT
v3.23.1

Summary of Significant Accounting Policies (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2023 USD ($) shares | Mar. 31, 2023 CNY (¥) ¥ / shares shares | Mar. 31, 2022 CNY (¥) shares | Dec. 31, 2022 USD ($) shares | Dec. 31, 2022 CNY (¥) ¥ / shares shares
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |
Other Comprehensive Income, Other, Net of Tax (in Dollars) | $ | $ 189,648 |  |  | $ 179,383 |
Exception of shareholders’ equity (in Yuan Renminbi) | ¥ |  | ¥ 6.87 |  |  | ¥ 6.38
Exception of shareholders’ equity per share (in Yuan Renminbi per share) | ¥ / shares |  | ¥ 1 |  |  | ¥ 1
Average rates of income accounts (in Yuan Renminbi) | ¥ |  | ¥ 6.84 | ¥ 6.35 |  |
Tax benefit percentage | 50.00% | 50.00% |  |  |
Outstanding warrants | 9,079,348 | 9,079,348 | 10,500,000 |  |
Antidilutive effect | 4,539,674 | 4,539,674 | 824,000 | 5,250,000 | 5,250,000
Outstanding option [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |
Antidilutive effect | 824,000 | 824,000 |  |  |

X
- Definition Amount of average rates of income accounts. + References No definition available. + Details
Name: | gdc_AverageRatesOfIncomeAccounts
Namespace Prefix: | gdc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of exception of shareholders’ equity. + References No definition available. + Details
Name: | gdc_ExceptionOfShareholdersEquity
Namespace Prefix: | gdc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Exception of shareholders’ equity per share. + References No definition available. + Details
Name: | gdc_ExceptionOfShareholdersEquityPerShare
Namespace Prefix: | gdc_
Data Type: | dtr:perShareItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | gdc_SummaryofSignificantAccountingPoliciesDetailsLineItems
Namespace Prefix: | gdc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
Name: | us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of warrants or rights outstanding. + References No definition available. + Details
Name: | us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to expense for award under share-based payment arrangement. Excludes expense determined to be nondeductible upon grant or after for award under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-12 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 35 -Paragraph 2 -SubTopic 740 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480887/718-740-35-2 + Details
Name: | us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase (decrease) in other comprehensive income, after tax, from changes classified as other. + References No definition available. + Details
Name: | us-gaap_OtherComprehensiveIncomeOtherNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_StockOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |