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Risk Assurance Liabilities
12 Months Ended
Dec. 31, 2021
Guarantees and Product Warranties [Abstract]  
Risk Assurance Liabilities
11.
RISK ASSURANCE LIABILITIES
The movement of risk assurance liabilities during the years ended December 31, 2020 and 2021 are as follows:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     As of December 31,  
     2020      2021  
     RMB      RMB      US$  
Balance at the beginning of the year
     259,952,473        460,829,299        72,314,173  
Fair value of risk assurance liabilities upon the inception of new loans
     348,921,174        443,831,604        69,646,863  
Performed risk assurance liabilities
     (150,312,528      (403,388,438      (63,300,448
Net loss on risk assurance liabilities
     2,268,180        197,750,449        31,031,361  
    
 
 
    
 
 
    
 
 
 
Balance at the end of the year
     460,829,299        699,022,914        109,691,949  
    
 
 
    
 
 
    
 
 
 
The maximum potential undiscounted future payment which the Company would be required to make under its risk assurance obligation is RMB14,540,230,427 and RMB31,335,737,264 (US$4,917,260,971) as of December 31, 2020 and 2021, respectively. The Company changed provisions of risk assurance with certain financial institution in 2021. The term of the risk assurance obligation ranges from 12 months to 60 months, as of December 31, 2020 and 2021.