v3.26.1
Income Taxes Expenses - Uncertainties on application of income tax law in PRC (Details)
¥ in Millions
12 Months Ended
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2025
CNY (¥)
Income Taxes Expense        
Statutory income tax rate (in percent) 25.00% 25.00% 25.00%  
Aggregate accumulated deficit $ (216,937,975) $ (216,859,796)    
Deferred tax liability for the PRC dividend withholding taxes $ 0 0 $ 0  
PRC        
Income Taxes Expense        
Statutory income tax rate (in percent) 25.00%      
Statute of limitations period for underpayment of taxes due to computational errors 3 years      
Extended period of statute of limitations under special circumstances 5 years      
Minimum underpayment of tax liability for special circumstance $ 13,700     ¥ 0.1
Statute of limitations period for related party transactions 10 years      
Withholding tax rate on dividends (as a percent) 10.00%      
Withholding tax rate on dividends if investors qualifies as beneficial owner with holdings above the threshold percentage (as a percent) 5.00%      
Threshold beneficial owner percentage determining withholding income tax rate (as a percent) 25.00%      
Withholding tax rate on dividends if investors qualifies as beneficial owner with holdings below the threshold percentage (as a percent) 10.00%      
PRC | Subsidiaries and VIEs        
Income Taxes Expense        
Aggregate accumulated deficit $ 95,973,799 96,155,284 95,168,175  
Hong Kong | Subsidiaries        
Income Taxes Expense        
Aggregate accumulated deficit $ 19,329,913 $ 18,334,776 $ 22,043,369