XML 90 R73.htm IDEA: XBRL DOCUMENT v3.22.1
INCOME TAX - Additional Information (Details) - CNY (¥)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Jan. 01, 2008
Disclosure Of Income Tax Expense Credit [Line Items]        
Net deferred tax liability (asset) ¥ 0 ¥ 0 ¥ 0  
Deferred tax liabilities further recognition 4,408,000 8,704,000 13,360,000  
Hong Kong        
Disclosure Of Income Tax Expense Credit [Line Items]        
Applicable tax rate 8.25% 8.25% 8.25%  
Dividend withholding tax rate       5.00%
PRC        
Disclosure Of Income Tax Expense Credit [Line Items]        
Applicable tax rate 25.00% 25.00% 25.00%  
Dividend withholding tax rate       10.00%
Undistributed earnings ¥ 88,164,000 ¥ 174,072,000 ¥ 267,193,000