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INVENTORIES, NET
12 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
INVENTORIES, NET
7. INVENTORIES, NET
 
    
As of December 31,
 
    
2020
    
2021
 
    
RMB
    
RMB
 
Merchandise and packing materials
     145,773        91,496  
Less: inventory write-downs
     (10,528      (6,996
    
 
 
    
 
 
 
Total inventories, net
     135,245        84,500