v3.25.3
Material related party transactions - Summary of Other Transactions With Related Parties (Details) - CNY (¥)
¥ in Thousands
6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Disclosure of transactions between related parties [line items]    
Sales of goods to: ¥ 92 ¥ 2,620
Service rendered to: 8,165 13,138
Purchases of goods or services from: 45,745 119,195
Disposal of property and equipment to: 1,900 600
Yutong Affiliates [Member]    
Disclosure of transactions between related parties [line items]    
Sales of goods to: 92  
Service rendered to: 2,107 6,660
Purchases of goods or services from: 13,366 53,638
Cost of goods sold 7,300 6,100
Yuji Affiliates [Member]    
Disclosure of transactions between related parties [line items]    
Purchases of goods or services from: 32,379 65,557
Payments made on behalf of customers to: 2,734 41,500
Disposal of property and equipment to: 1,431  
Alliance Affiliates [Member]    
Disclosure of transactions between related parties [line items]    
Sales of goods to:   2,620
Service rendered to: ¥ 6,058 ¥ 6,478