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v3.23.2

Property and equipment, net (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2022
Property and equipment, net |
Schedule of property and equipment, net | ​
​ | ​ | ​ | ​ | ​
​ | ​ | As of December 31,
​ | ​ | 2021 | ​ | 2022
​ | ​ | RMB | ​ | RMB
Machinery and electronic equipment |  | 158,849 |  | 170,536
Transportation vehicles |  | 7,600 |  | 1,002
Office and other equipment |  | 7,219 |  | 13,675
Leasehold improvements |  | 39,166 |  | 31,496
Construction in progress |  | 5,994 |  | —
Property and equipment |  | 218,828 |  | 216,709
Less: accumulated depreciation |  | (115,672) |  | (98,260)
Property and equipment, net |  | 103,156 |  | 118,449
Schedule of depreciation expenses on property and equipment allocated to expense items | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year ended December 31,
​ |  | 2020 |  | 2021 |  | 2022
​ | ​ | RMB | ​ | RMB | ​ | RMB
Cost of revenues | ​ | 1,684 | ​ | 1,401 | ​ | 1,022
Selling and marketing expenses |  | 355 | ​ | 290 |  | 727
General and administrative expenses |  | 23,148 | ​ | 26,530 |  | 27,433
Research and development expenses |  | 13,293 | ​ | 14,916 |  | 15,905
Total depreciation |  | 38,480 | ​ | 43,137 |  | 45,087

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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