v3.26.1
TAXATION - Enterprise income tax ("EIT") (Details)
$ in Thousands, $ in Thousands, ¥ in Millions
12 Months Ended
Dec. 31, 2025
USD ($)
Dec. 31, 2025
HKD ($)
Dec. 31, 2025
CNY (¥)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Dec. 31, 2019
CNY (¥)
TAXATION            
Tax rate (as a percent) 25.00% 25.00% 25.00% 25.00% 25.00%  
Cayman Islands            
TAXATION            
Payments of dividends by the company $ 0          
British Virgin Islands            
TAXATION            
Payments of dividends by the company $ 0          
Hong Kong            
TAXATION            
Payments of dividends by the company   $ 0        
Hong Kong | First 2,000,000 Hong Kong Dollar ("HKD") of profits            
TAXATION            
Profit to qualify for tax rate   $ 2,000        
Tax rate (as a percent) 8.25% 8.25% 8.25%      
Hong Kong | Above 2,000,000 Hong Kong Dollar ("HKD") of profits            
TAXATION            
Profit to qualify for tax rate   $ 2,000        
Tax rate (as a percent) 16.50% 16.50% 16.50%      
Singapore            
TAXATION            
Tax rate (as a percent) 17.00% 17.00% 17.00%      
United States            
TAXATION            
Tax rate (as a percent) 21.00% 21.00% 21.00%      
Payment of dividends withholding tax rate (as a percent) 30.00% 30.00% 30.00%      
Ireland            
TAXATION            
Payment of dividends withholding tax rate (as a percent) 25.00% 25.00% 25.00%      
Ireland | Trading income            
TAXATION            
Tax rate (as a percent) 12.50% 12.50% 12.50%      
Ireland | Non trading income            
TAXATION            
Tax rate (as a percent) 25.00% 25.00% 25.00%      
Malaysia            
TAXATION            
Payment of dividends withholding tax rate (as a percent) 10.00% 10.00% 10.00%      
PRC            
TAXATION            
Tax rate (as a percent) 25.00% 25.00% 25.00%      
Preferential tax rate (as a percent) 15.00% 15.00% 15.00%      
Preferential corporate income tax rate           20
Withholding tax rate (as a percent) 10.00% 10.00% 10.00%      
PRC | Assessable Taxable Profit Less Than 1 Million            
TAXATION            
Preferential corporate income tax rate 5 5 5 5 5  
PRC | Taxable profits between RMB1.0 million and RMB3.0 million            
TAXATION            
Preferential corporate income tax rate 5 5 5 5 5  
PRC | Minimum            
TAXATION            
Profit to qualify for tax rate | ¥           ¥ 1.0
PRC | Minimum | Assessable Taxable Profit Less Than 1 Million            
TAXATION            
Exemption range in taxable profits           75.00%
PRC | Minimum | Taxable profits between RMB1.0 million and RMB3.0 million            
TAXATION            
Profit to qualify for tax rate | ¥     ¥ 1.0 ¥ 1.0 ¥ 1.0 ¥ 1.0
Exemption range in taxable profits           50.00%
PRC | Maximum | Assessable Taxable Profit Less Than 1 Million            
TAXATION            
Profit to qualify for tax rate | ¥     1.0 1.0 1.0 ¥ 1.0
Exemption range in taxable profits           87.50%
PRC | Maximum | Taxable profits between RMB1.0 million and RMB3.0 million            
TAXATION            
Profit to qualify for tax rate | ¥     ¥ 3.0 ¥ 3.0 ¥ 3.0 ¥ 3.0
Exemption range in taxable profits           75.00%