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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2023
Income Tax Disclosure [Abstract] |
Schedule of current and deferred portion of income tax expenses | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | For the Year ended December 31,
​ | ​ | 2021 | ​ | 2022 | ​ | 2023
​ |  | RMB |  | RMB |  | RMB
Current tax expenses |  | — |  | 2 |  | 13
Over-provision in prior year |  | (1,057) |  | — |  | —
Deferred tax (benefits) expense |  | (58) |  | (68) |  | 645
Income tax (benefits) expenses |  | (1,115) |  | (66) |  | 658
Schedule of net loss before income tax | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | For the Year ended December 31,
​ | ​ | 2021 | ​ | 2022 | ​ | 2023
​ |  | RMB |  | RMB |  | RMB
Net loss before income tax from PRC operations |  | (92,498) |  | (251,302) |  | (480,479)
Net (loss) gain before income tax from non-PRC operations |  | (153,444) |  | (49,529) |  | 5,168
Total net loss before income tax |  | (245,942) |  | (300,831) |  | (475,311)
Schedule of reconciliation between the effective income tax rate and statutory income tax rate | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | For the Year ended December 31, |
​ |  | 2021 |  | 2022 |  | 2023 |
Statutory income tax rate | ​ | 25.00 | % | 25.00 | % | 25.00 | %
Effect of different tax rate of different jurisdictions | ​ | (4.39) | % | (3.14) | % | (0.79) | %
Non-deductible expenses | ​ | (17.98) | % | (6.12) | % | (12.42) | %
Effect of super deduction on R&D expenses | ​ | 34.83 | % | 41.00 | % | 37.21 | %
Tax-free income | ​ | — | ​ | — | ​ | 0.32 | %
Effect of change of valuation allowance | ​ | (37.44) | % | (56.76) | % | (49.46) | %
Over provision for prior years | ​ | 0.43 | % | — | ​ | — | ​
Income tax expenses | ​ | 0.45 | % | (0.02) | % | (0.14) | %
Schedule of deferred tax assets and deferred tax liabilities | ​
​ | ​ | ​ | ​ | ​
​ |  | As of December 31,
​ | ​ | 2022 | ​ | 2023
​ |  | RMB |  | RMB
Deferred tax assets |  |  |  |
– Net operating loss carry forwards |  | 373,215 |  | 705,249
– Deductible temporary differences |  | 31,348 |  | 72,625
– Deferred revenue |  | 6,294 |  | 19,620
Less: valuation allowance |  | (410,857) |  | (797,494)
Net deferred tax assets |  | — |  | —
Deferred tax liabilities |  | ​ |  | ​
– Identifiable intangible assets from business combination. |  | 439 |  | —
Total deferred tax liabilities |  | 439 |  | —
Schedule of movement of valuation allowance | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | For the Year ended December 31,
​ | ​ | 2021 | ​ | 2022 | ​ | 2023
​ |  | RMB |  | RMB |  | RMB
Balance at beginning of the year |  | 136,269 |  | 241,485 |  | 410,857
Addition |  | 105,216 |  | 169,372 |  | 386,637
Total |  | 241,485 |  | 410,857 |  | 797,494

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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-2 + Details
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