v3.26.1
Fair Value Measurement - ​Schedule of Warrants Outstanding and Fair Values (Details)
¥ in Thousands
1 Months Ended 2 Months Ended 12 Months Ended
Dec. 31, 2022
CNY (¥)
shares
Dec. 31, 2022
$ / shares
Dec. 31, 2024
CNY (¥)
shares
Dec. 31, 2024
$ / shares
Dec. 31, 2025
CNY (¥)
shares
Dec. 31, 2025
$ / shares
Dec. 31, 2024
CNY (¥)
shares
Dec. 31, 2024
$ / shares
Dec. 31, 2023
CNY (¥)
shares
Dec. 31, 2023
$ / shares
November 23, 2022 [member]                    
​Schedule of Warrants Outstanding and Fair Values [Line Items]                    
Warrants outstanding, fair value beginning balance | shares 5,454,546       10,349,111   5,454,546   5,454,546  
Calculated fair value per ADS, fair value beginning balance | $ / shares   $ 0.95       $ 0.85   $ 0.1   $ 0.64
Fair value, beginning balance | ¥ ¥ 36,838       ¥ 63,380   ¥ 3,952   ¥ 24,376  
Warrants outstanding, Gain (Loss) on change in fair value of warrant liability | shares            
Calculated fair value per ADS, Gain (Loss) on change in fair value of warrant liability | $ / shares            
Fair value, Gain (Loss) on change in fair value of warrant liability | ¥ ¥ (11,219)       ¥ (25,630)   ¥ 58,818   ¥ (20,732)  
Warrants outstanding, modification of warrants | shares         9,608,103   4,894,565      
Calculated fair value per ADS, modification of warrants | $ / shares                
Fair value, modification of warrants | ¥                
Warrants outstanding, Exercised | shares         (2,946,220)          
Calculated fair value per ADS, Exercised | $ / shares                  
Fair value, Exercised | ¥         ¥ (15,080)          
Warrants outstanding, effect of exchange rate changes | shares            
Calculated fair value per ADS, effect of exchange rate changes | $ / shares            
Fair value, effect of exchange rate changes | ¥ ¥ (1,243)       ¥ (998)   ¥ 610   ¥ 308  
Warrants outstanding, fair value ending balance | shares 5,454,546   10,349,111   17,010,994   10,349,111   5,454,546  
Calculated fair value per ADS, fair value ending balance | $ / shares   $ 0.64   $ 0.85   0.18   0.85   $ 0.1
Fair value, ending balance | ¥ ¥ 24,376   ¥ 63,380   ¥ 21,672   ¥ 63,380   ¥ 3,952  
October 28, 2024 [Member]                    
​Schedule of Warrants Outstanding and Fair Values [Line Items]                    
Warrants outstanding, fair value beginning balance | shares     761,719   761,719          
Calculated fair value per ADS, fair value beginning balance | $ / shares       1.27   0.95        
Fair value, beginning balance | ¥     ¥ 6,888   ¥ 5,176          
Warrants outstanding, Gain (Loss) on change in fair value of warrant liability | shares                
Calculated fair value per ADS, Gain (Loss) on change in fair value of warrant liability | $ / shares                
Fair value, Gain (Loss) on change in fair value of warrant liability | ¥     ¥ (1,752)   ¥ (2,394)          
Warrants outstanding, modification of warrants | shares         707,179          
Calculated fair value per ADS, modification of warrants | $ / shares                  
Fair value, modification of warrants | ¥                  
Warrants outstanding, effect of exchange rate changes | shares                
Calculated fair value per ADS, effect of exchange rate changes | $ / shares                
Fair value, effect of exchange rate changes | ¥     ¥ 40   ¥ (77)          
Warrants outstanding, fair value ending balance | shares     761,719   1,468,898   761,719      
Calculated fair value per ADS, fair value ending balance | $ / shares       $ 0.95   $ 0.26   $ 0.95    
Fair value, ending balance | ¥     ¥ 5,176   ¥ 2,705   ¥ 5,176