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Inventories, net (Tables)
12 Months Ended
Dec. 31, 2021
Inventories, net  
Schedule of inventories, net

As of As of December 31, 

2020

2021

    

RMB

    

RMB

    

US$

Merchandise

 

457,469

 

643,130

 

100,921

Inventories provision

 

(14,841)

 

(18,139)

 

(2,846)

 

442,628

 

624,991

 

98,075