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Summary of accounting policy information - Impairment of non financial assets and Intangible assets (Details)
12 Months Ended
Dec. 31, 2024
CNY (¥)
Intangible assets  
Impairment loss ¥ 0
Application and platform | Minimum  
Intangible assets  
Useful life 3 years
Application and platform | Maximum  
Intangible assets  
Useful life 10 years
Purchased software | Minimum  
Intangible assets  
Useful life 3 years
Purchased software | Maximum  
Intangible assets  
Useful life 10 years
Business licenses | Minimum  
Intangible assets  
Useful life 3 years
Business licenses | Maximum  
Intangible assets  
Useful life 5 years