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LEASE (Tables)
12 Months Ended
Dec. 31, 2025
LEASE  
Schedule of component lease receivables

As at December 31, 

  ​ ​ ​

2024

  ​ ​ ​

2025

  ​ ​ ​

2025

RMB

RMB

US$

Current

  ​

  ​

  ​

Account receivable - Operating lease

 

11,816

10,430

1,491

Account receivable - Sales-type lease

 

2,178

2,546

364

Total

 

13,994

12,976

1,855

Schedule of component sales-type and direct financing leases

For the Year Ended December 31, 2025

Direct financing 

Sales-type leases

leases

Operating leases

  ​ ​ ​

RMB

  ​ ​ ​

US$

  ​ ​ ​

RMB

  ​ ​ ​

US$

  ​ ​ ​

RMB

  ​ ​ ​

US$

Selling loss recognized at the commencement date

Interest income on net investment in the lease

3,026

433

Including: Income relating to variable lease payments not included in the measurement of the net investment in a lease

3,026

433

Lease income relating to lease payments

3,159

452

Including: Income relating to variable lease payments not included in the measurement of lease receivable

3,159

452

For the Year Ended December 31, 2024

Direct financing

Sales-type leases

 leases

Operating leases

  ​ ​ ​

RMB

  ​ ​ ​

US$

  ​ ​ ​

RMB

  ​ ​ ​

US$

  ​ ​ ​

RMB

  ​ ​ ​

US$

Selling loss recognized at the commencement date

 

Interest income on net investment in the lease

 

2,637

361

Including: Income relating to variable lease payments not included in the measurement of the net investment in a lease

 

2,637

361

Lease income relating to lease payments

6,719

920

Including: Income relating to variable lease payments not included in the measurement of lease receivable

 

6,719

920

Schedule of future minimum lease payments to be received from such non-cancelable operating leases

Future minimum 

operating lease payments

  ​ ​ ​

RMB

  ​ ​ ​

US$

2026

 

931

133

2027

 

 

2028

 

 

2029

 

 

2030

 

 

Above 5 years

 

 

Schedule of components of lease cost

For the year ended December 31, 2025

  ​ ​ ​

RMB

  ​ ​ ​

US$

Operating lease cost

  ​ ​ ​

27,320

3,907

Short term lease cost

 

56

8

Total

 

27,376

3,915

Schedule of cash flow and other information operating leases

For the year

 

ended December 31, 2025

 

  ​ ​ ​

RMB

  ​ ​ ​

US$

 

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

Operating cash flows from operating leases

10,094

1,443

ROU assets obtained in exchange for operating lease liabilities*

 

70

10

Weighted-average remaining lease terms (in years)

3.6

3.6

Weighted-average discount rate

 

5.07

%

5.07

%

*

Includes new leases entered into during the year ended December 31, 2025. Changes in the ROU asset and liability are presented net within operating activities.

Summary of future minimum lease payments for operating leases

Minimum Lease Payments

  ​ ​ ​

RMB

  ​ ​ ​

US$

Year ending December 31,

 

  ​

 

  ​

2026

 

43,773

6,260

2027

 

15,381

2,199

2028

 

14,261

2,039

2029

 

14,261

2,039

2030

 

14,742

2,108

Thereafter

 

72,342

10,345

Total future lease payments

 

174,760

24,990

Less: Imputed interest

 

6,336

906

Total lease liability balance

 

168,424

24,084

Schedule of prepaid land lease payments

As at December 31, 

2024

2025

2025

RMB

RMB

US$

Right-of-use 

Right-of-use 

Right-of-use 

  ​ ​ ​

Asset

  ​ ​ ​

asset

  ​ ​ ​

asset

Land use rights

464,209

464,209

66,381

Less: accumulated amortization

 

(75,977)

(85,599)

(12,241)

Net carrying value

 

388,232

378,610

54,140

Schedule of estimated annual amortization expenses

  ​ ​ ​

Amortization

  ​ ​ ​

RMB

  ​ ​ ​

US$

2026

9,622

1,376

2027

9,622

1,376

2028

9,622

1,376

2029

9,622

1,376

2030

9,622

1,376