v3.26.1
Financial risk management - Schedule of Significant Unobservable Inputs Used in Fair Value Measurement of Assets (Details) - Expected Volatility Measurement Input [Member] - CNY (¥)
¥ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Convertible Notes [Member]    
Financial risk management - Schedule of Significant Unobservable Inputs Used in Fair Value Measurement of Assets (Details) [Line Items]    
Description Convertible bonds  
Unobservable inputs Expected volatility  
Relationship of unobservable inputs to fair value The higher the expected volatility, the lower the fair value  
Warrants [Member]    
Financial risk management - Schedule of Significant Unobservable Inputs Used in Fair Value Measurement of Assets (Details) [Line Items]    
Description Warrants  
Unobservable inputs Expected volatility  
Relationship of unobservable inputs to fair value The higher the expected volatility, the higher the fair value  
Level 3 | Convertible Notes [Member]    
Financial risk management - Schedule of Significant Unobservable Inputs Used in Fair Value Measurement of Assets (Details) [Line Items]    
Fair value ¥ 0 ¥ 241,524
Level 3 | Warrants [Member]    
Financial risk management - Schedule of Significant Unobservable Inputs Used in Fair Value Measurement of Assets (Details) [Line Items]    
Fair value ¥ 22,044 ¥ 0