Principal Accounting Policies - Statutory reserves (Details) - China mainland - Statutory surplus reserve |
12 Months Ended |
|---|---|
Dec. 31, 2025 | |
| Statutory reserves | |
| Required minimum percentage of annual appropriations | 10.00% |
| Statutory threshold percentage of the reserve fund to the registered capital of the respective company, above which the appropriation is not required | 50.00% |