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FINANCIAL INCOME/(EXPENSE), NET (Tables)
12 Months Ended
Dec. 31, 2021
Financial Income And Expense [Abstract]  
Schedule of financial income/(expense), net
    
Year Ended

December 31,

2019
    
Year Ended

December 31,

2020
    
Year Ended

December 31,

2021
 
    
RMB
    
RMB
    
RMB
 
Interest income
     52,889        46,667        15,947  
Interest expense
     —          (6,383      (4,181
Gains/(loss) from fair value changes of equity securities investments (Note 9)
     68,555        (53,683      59,690  
Bank charges
     (444      (709      (529
Others
     370        5,537        9,134  
    
 
 
    
 
 
    
 
 
 
Total financial income/(expense), net
     121,370        (8,571      80,061