v3.26.1
Principal Accounting Policies - Statutory reserves, Dividends (Details) - CNY (¥)
¥ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Accounting Policies [Abstract]      
Appropriations to statutory reserves ¥ 1.1 ¥ 0.0 ¥ 0.0