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Other Long-term Assets - Goodwill (Details) - CNY (¥)
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Goodwill    
Beginning balance ¥ 1,855,394,000 ¥ 2,166,486,000
Disposal and others (101,000) (311,092,000)
Ending balance 1,855,293,000 1,855,394,000
Impairment charges ¥ 0 ¥ 0