v3.25.2
Summary of Significant Accounting Policies (Details)
¥ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Dec. 31, 2022
CNY (¥)
Dec. 31, 2024
USD ($)
Summary of Significant Accounting Policies [Line Items]        
Deposit requirement ¥ 200      
Allowance for credit losses ¥ 1,996 ¥ 931 ¥ 268  
Residual value rate 5.00%     5.00%
Impairment for long-term investments  
Contract liabilities 940 4,575   $ 129
Revenue recognized   4,575 221  
Capitalized costs  
Total expenses on employee benefits 1,243 1,480 2,059  
Unrecognized tax benefits  
Dessription of limitations on use The Group’s operating subsidiaries in PRC are subject to examination by the relevant tax authorities. According to the PRC Tax Administration and Collection Law, the statute of limitations is three years if the underpayment of taxes is due to computational errors made by the taxpayer or the withholding agent. The statute of limitations is extended to five years under special circumstances, where the underpayment of taxes is more than RMB 0.1 million ($13,700). In the case of transfer pricing issues, the statute of limitation is ten years. There is no statute of limitation in the case of tax evasion.      
Lease term 12 years     12 years
Number of reportable segment 1      
Channel One [Member]        
Summary of Significant Accounting Policies [Line Items]        
Revenues generated gross ¥ 51,962 199,525 103,174  
Channel Two [Member]        
Summary of Significant Accounting Policies [Line Items]        
Revenues generated gross 497,078 229,541 45,850  
Sales of Products [Member]        
Summary of Significant Accounting Policies [Line Items]        
Revenues generated gross 272,438 117,654  
Revenues generated net ¥ 123 ¥ 4,709  
VAT rate 9.00%      
Services [Member]        
Summary of Significant Accounting Policies [Line Items]        
VAT rate 6.00%      
Retail Sales [Member]        
Summary of Significant Accounting Policies [Line Items]        
VAT rate 13.00%      
US [Member]        
Summary of Significant Accounting Policies [Line Items]        
Translated rate 1     1
RMB [Member]        
Summary of Significant Accounting Policies [Line Items]        
Translated rate 7.2993     7.2993