v3.26.1
Fair Value Measurement - ​Schedule of Warrant Liability at Fair Value (Details)
¥ in Thousands, $ in Thousands
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
​Schedule of Warrant Liability at Fair Value [Line Items]        
Warrant liability ¥ 24,377 $ 3,486 ¥ 68,556  
Level 1 Inputs [Member]        
​Schedule of Warrant Liability at Fair Value [Line Items]        
Warrant liability    
Level 2 Inputs [Member]        
​Schedule of Warrant Liability at Fair Value [Line Items]        
Warrant liability    
Level 3 Inputs [Member]        
​Schedule of Warrant Liability at Fair Value [Line Items]        
Warrant liability ¥ 24,377   ¥ 68,556 ¥ 3,952