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Leases - Additional Information (Details) - CNY (¥)
¥ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Leases      
Weighted average lessee's incremental borrowing rate applied to lease liabilities recognised at date of initial application of IFRS 16 4.18% 4.18%  
Cash outflows in operating activities for leases ¥ 19.8 ¥ 16.7 ¥ 9.7