v3.26.1
Accounts receivable, net (Tables)
12 Months Ended
Dec. 31, 2025
Accounts receivable, net  
Schedule of accounts receivable

As of December 31, 

2024

2025

  ​ ​ ​

RMB

  ​ ​ ​

RMB

  ​ ​ ​

US$

Accounts receivable

55,720

49,723

7,110

Less: allowance for credit losses

 

(4,916)

 

(6,495)

 

(928)

Total accounts receivable, net

 

50,804

 

43,228

 

6,182

Schedule of movement in allowance for credit losses

2024

2025

  ​ ​ ​

RMB

  ​ ​ ​

RMB

  ​ ​ ​

US$

Balance at beginning of year

5,331

4,916

703

Provisions

 

1,362

 

3,320

 

475

Write-offs

 

(1,777)

 

(1,741)

 

(250)

Balance at end of year

 

4,916

 

6,495

 

928