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v3.23.1

Taxation - Income taxes (Details) - CNY (¥) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Income taxes |  |  |  |
Income tax rate (as a percent) |  | 25.00% | 25.00% | 25.00%
Reconciliation of the differences between the statutory income tax rate and the Group's effective income tax rate |  |  |  |
Statutory income tax rate |  | 25.00% | 25.00% | 25.00%
Permanent differences |  | 6.74% | (1.19%) | 0.60%
Tax rate difference from statutory rate in other jurisdictions | [1] | (3.19%) | (1.43%) | (3.90%)
Tax effect of preferential tax treatments |  | (8.91%) | (7.94%) | (8.29%)
Withholding tax |  | (0.25%) | (0.21%) | (0.63%)
Change in valuation allowance |  | (20.79%) | (15.65%) | (14.56%)
Effective income tax rate |  | (1.40%) | (1.42%) | (1.78%)
Operating loss carryforwards |  |  |  |
Net operating tax loss carry forwards |  | ¥ 15,906,396,000 |  |
Loss expiring in 2023 |  |  |  |
Operating loss carryforwards |  |  |  |
Net operating tax loss carry forwards |  | 88,466,000 |  |
Loss expiring in 2024 |  |  |  |
Operating loss carryforwards |  |  |  |
Net operating tax loss carry forwards |  | 189,744,000 |  |
Loss expiring in 2025 |  |  |  |
Operating loss carryforwards |  |  |  |
Net operating tax loss carry forwards |  | 269,421,000 |  |
Loss expiring in 2026 |  |  |  |
Operating loss carryforwards |  |  |  |
Net operating tax loss carry forwards |  | 952,055,000 |  |
Loss expiring in 2027 and thereafter |  |  |  |
Operating loss carryforwards |  |  |  |
Net operating tax loss carry forwards |  | 14,406,710,000 |  |
Cayman Islands |  |  |  |
Income taxes |  |  |  |
Withholding tax amount |  | ¥ 0 |  |
Hong Kong |  |  |  |
Income taxes |  |  |  |
Income tax rate (as a percent) |  | 16.50% | 16.50% | 16.50%
Reconciliation of the differences between the statutory income tax rate and the Group's effective income tax rate |  |  |  |
Statutory income tax rate |  | 16.50% | 16.50% | 16.50%
China |  |  |  |
Income taxes |  |  |  |
Income tax rate (as a percent) |  | 25.00% |  |
Reconciliation of the differences between the statutory income tax rate and the Group's effective income tax rate |  |  |  |
Statutory income tax rate |  | 25.00% |  |
China | Certain subsidiaries | Encouraged Enterprises [Member] |  |  |  |
Income taxes |  |  |  |
Preferential tax rate |  | 15.00% |  |
[1] | It is primarily due to the tax effect of the Company as a tax-exempt entity incorporated in the Cayman Islands.

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