v3.26.3
Fair value estimation - Schedule of Significant Unobservable Inputs Used in Fair Value Measurement of Assets (Details) - Expected Volatility Measurement Input [Member] - Warrants [Member] - CNY (¥)
¥ in Thousands
6 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Fair value estimation - 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    
Fair value estimation - Schedule of Significant Unobservable Inputs Used in Fair Value Measurement of Assets (Details) [Line Items]    
Fair value ¥ 0 ¥ 22,044