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Accrued Expenses and Other Liabilities (Tables)
12 Months Ended
Dec. 31, 2019
Accrued Expenses and Other Liabilities  
Schedule of accrued expenses and other liabilities

As of December 31, 

    

2018

    

2019

    

2019

RMB

RMB

US$

Payroll payable

 

389,615

 

1,061,228

 

152,436

Accrued expenses

 

1,371,483

 

2,727,273

 

391,748

VAT and other tax payable

 

436,495

 

1,045,796

 

150,219

Others

 

28,074

 

42,765

 

6,144

 

2,225,667

 

4,877,062

 

700,547