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VARIABLE INTEREST ENTITIES - Additional Information (Details)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
VARIABLE INTEREST ENTITIES        
Percentage of operating profit generated by the VIEs 90.00%      
Initial term of exclusive technical service agreement 20 years      
VIEs contribution on net revenue   0.60% 0.90% 100.00%
VIEs account on total assets   3.70% 2.20%  
VIEs account on total liabilities   47.80% 51.60%