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ACCOUNTS RECEIVABLE AND CONTRACT ASSETS, NET - Contract assets, net (Details) - CNY (¥)
¥ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Contract assets, net    
Contract assets - gross ¥ 959,080 ¥ 319,736
Allowance for credit losses (113,551) (119,064)
Contract assets, net ¥ 845,529 ¥ 200,672