v3.26.1
Property and equipment, net (Tables)
12 Months Ended
Dec. 31, 2025
Property and equipment, net  
Schedule of property and equipment, net

As of

December 31, 

As of December 31, 

  ​ ​ ​

2024

  ​ ​ ​

2025

  ​ ​ ​

2025

RMB

RMB

US$

Computer and transmission equipment

31,286,142

37,106,123

5,306,105

Furniture and office equipment

1,715,512

2,695,289

385,421

Leasehold improvements

27,530,407

33,375,602

4,772,648

Motor vehicles

816,103

816,103

116,701

Total property and equipment

61,348,164

73,993,117

10,580,875

Accumulated depreciation

(45,514,674)

(50,093,561)

(7,163,284)

Property and equipment, net

15,833,490

23,899,556

3,417,591