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LEASES (Tables)
12 Months Ended
Dec. 31, 2022
LEASES  
Schedule of items related to operating lease in consolidated balance sheet

    

December 31, 2021

    

December 31, 2022

    

December 31, 2022

RMB

RMB

US$

(Note 3)

Operating lease right-of-use assets

 

6,363,724

12,061,697

1,748,782

Operating lease liabilities-current portion

 

4,306,738

5,792,931

839,896

Operating lease liabilities-non-current portion

 

2,567,342

7,405,805

1,073,741

Schedule of lease cost

    

Classification in Consolidated  

    

    

    

Statements of Operations  

    

and Comprehensive (Loss) Gain

    

December 31, 2021

    

December 31, 2022

    

December 31, 2022

RMB

RMB

US$

(Note 3)

Operating lease cost

Operating expenses

4,220,789

4,254,040

616,778

Cost of other leases with terms less than one year

 

Operating expenses

 

62,430

 

87,329

12,662

Total

 

 

4,283,219

 

4,341,369

629,440

Schedule of maturities of operating lease liabilities

    

December 31, 2021

    

December 31, 2022

    

December 31, 2022

RMB

RMB

US$

(Note 3)

Due within one year

 

4,511,953

 

6,278,361

910,277

Due in the second year

 

1,780,332

 

5,172,713

749,973

Due in the third year

 

882,132

 

2,502,839

362,878

Total lease payments

 

7,174,417

 

13,953,913

2,023,128

Less: imputed interest

 

(300,337)

 

(755,177)

(109,491)

Total

 

6,874,080

 

13,198,736

1,913,637

Summary of lease term and discount rate for the Company's operating lease

    

Operating Lease

Weighted average remaining lease term (in years)

1.23

Weighted average discount rate

4.65

%

Schedule of supplemental cash flow information related to operating leases

    

December 31, 2021

    

December 31, 2022

    

December 31, 2022

RMB

RMB

US$

(Note 3)

Cash paid for amounts included in the measurement of operating lease liabilities

 

4,813,050

 

2,381,173

345,238