v3.26.3
Trade receivables, net (Details) - CNY (¥)
¥ in Millions
6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Gross carrying amount [member]    
Trade receivables, net (Details) [Line Items]    
Impairment allowances ¥ 50.7 ¥ 71.1