v3.26.1
Summary Of Significant Accounting Policies (Details)
$ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2025
USD ($)
Dec. 31, 2025
CNY (¥)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
HKD ($)
Summary of Significant Accounting Policies [Line Items]            
Net cash used in operating activities $ 7,032 ¥ 49,179,000 ¥ 61,439,000 ¥ 17,956,000    
Bank deposits 13,309   1,791,000   ¥ 93,070,000  
Advertising and promotion expenses 1,697 11,868,000 14,364,000 17,404,000    
Employee benefits $ 2,931 ¥ 20,495,000 22,431,000 28,818,000    
Percentage of statutory surplus fund after tax profits 10.00% 10.00%        
Percentage of statutory surplus fund   ¥ 0.50        
Lease terms 12 months       12 months 12 months
Impairment of long-lived assets      
Net loss $ 6,775 47,377,000 34,941,000 ¥ 105,621,000    
Accumulated deficit 251,988   1,715,536,000   ¥ 1,762,180,000  
Cash and cash equivalents 15,656   2,772,000   109,486,000  
Uninsured portion of cash balances $ 2,347   ¥ 981,000   ¥ 16,416,000  
RMB [Member]            
Summary of Significant Accounting Policies [Line Items]            
Net cash used in operating activities   ¥ 45,540,000        
Exchange rate 0.069931       0.069931 0.069931
Average exchange rates 0.069931 0.069931        
US [Member]            
Summary of Significant Accounting Policies [Line Items]            
Net cash used in operating activities | $ $ 6,513          
Exchange rate 0.01       0.01 0.01
Average exchange rates 0.01 0.01        
Chinese Mainland [Member]            
Summary of Significant Accounting Policies [Line Items]            
Bank deposits         ¥ 500,000  
Hong Kong S.A.R [Member]            
Summary of Significant Accounting Policies [Line Items]            
Bank deposits | $           $ 500
United States [Member]            
Summary of Significant Accounting Policies [Line Items]            
Bank deposits | $ $ 250          
Redeemable Convertible Preferred Stock [Member]            
Summary of Significant Accounting Policies [Line Items]            
Redemption amount $ 22,269       ¥ 155,736