XML 53 R31.htm IDEA: XBRL DOCUMENT v3.24.1.u1
Accounts Receivable, Net (Tables)
 12 Months Ended
Dec. 31, 2023
Accounts Receivable, Net [Abstract]  
Schedule of Accounts Receivable Accounts receivable consisted of the following:
   As of 
   December 31,   December 31, 
   2022   2023 
   RMB   RMB   US$ 
Accounts receivable   32,098,662    51,478,092    7,268,146 
Allowance for credit losses related to accounts receivable   (1,185,328)   (10,196,104)   (1,439,579)
Total accounts receivable, net   30,913,334    41,281,988    5,828,567 

 
Schedule of Allowance of Doubtful Accounts The movement of allowance of doubtful accounts is as follows:
   As of 
   December 31,   December 31, 
   2022   2023 
   RMB   RMB   US$ 
Beginning balance   682,905    1,185,328    167,355 
Addition   700,505    9,745,364    1,375,938 
Write off   (198,082)   (406,566)   (57,402)
Reverse   
-
    (328,022)   (46,312)
Ending balance   1,185,328    10,196,104    1,439,579