v3.26.1
Income Taxes (Tables)
12 Months Ended
Dec. 31, 2025
Income Taxes  
Schedule of Group's profit before income taxes

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​

​

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​

​

​

​

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  ​ ​ ​

For the years ended December 31, 

​

  ​ ​ ​

2023

  ​ ​ ​

2024

  ​ ​ ​

2025

  ​ ​ ​

2025

​

​

RMB

​

RMB

​

RMB

​

US$

Non-PRC

​

(1,495,542)

​

6,375,022

​

(6,121,113)

​

(875,308)

PRC

​

73,371,990

​

126,326,271

​

125,696,408

​

17,974,348

​

​

71,876,448

​

132,701,293

​

119,575,295

​

17,099,040

Schedule of income taxes

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​

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​

​

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For the years ended December 31, 

​

  ​ ​ ​

2023

  ​ ​ ​

2024

  ​ ​ ​

2025

  ​ ​ ​

2025

​

​

RMB

​

RMB

​

RMB

​

US$

Current income tax

 

11,048,804

​

20,044,605

​

21,914,684

​

3,133,758

Deferred income tax expense/(benefit)

 

801,100

​

222,176

​

(181,928)

​

(26,015)

​

 

11,849,904

​

20,266,781

​

21,732,756

​

3,107,743

Schedule of reconciliation of difference between the mainland China statutory income tax rate and the Group's effective income tax rate

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For the years ended December 31, 

​

  ​ ​ ​

2023

  ​ ​ ​

2024

Statutory income tax rate

 

25.0%

​

25.0%

Tax effect of different tax rates in different jurisdictions

 

(4.4)%

​

(6.6)%

Tax effect of preferential tax rates

 

(4.2)%

​

(2.7)%

Tax effect of non-deductible expenses

​

0.4%

​

0.1%

Tax effect of non-taxable income

 

(0.0)%

​

(0.1)%

Tax effect of tax rate changes on deferred taxes

 

0.2%

​

0.2%

Tax effect of additional deduction of research and development expenses

​

(1.0)%

​

(0.5)%

Change in valuation allowance

 

0.5%

​

(0.1)%

Effective tax rate

 

16.5%

​

15.3%

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​

​

​

​

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For the year ended December 31, 2025

​

  ​ ​ ​

RMB

  ​ ​ ​

US$

  ​ ​ ​

percent

​

​

​

​

​

​

​

Income tax computed at the statutory income tax rate

​

29,893,824

 

4,274,760

 

25.0%

Foreign tax effects

 

  ​

 

  ​

 

  ​

--Cayman

 

  ​

 

  ​

 

  ​

Statutory tax rate difference

 

1,984,409

 

283,767

 

1.7%

--Other foreign jurisdictions

 

(151,369)

 

(21,645)

 

(0.1)%

Preferential tax rate

 

(9,598,681)

 

(1,372,593)

 

(8.0)%

Non-deductible expenses

 

421,856

 

60,325

 

0.4%

Non-taxable income

 

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​

 

​

--Interest and investment income, net

 

(3,308,795)

 

(473,152)

 

(2.8)%

Others

 

662,187

 

94,691

 

0.5%

Change in valuation allowance

 

1,829,325

 

261,590

 

1.5%

Income tax expenses

 

21,732,756

 

3,107,743

 

18.2%

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Schedule of significant components of the Group's deferred tax assets

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As of December 31, 

​

  ​ ​ ​

2024

  ​ ​ ​

2025

  ​ ​ ​

2025

​

​

RMB

​

RMB

​

US$

Deferred tax assets

​

​

​

​

​

​

Tax losses carried forward

​

677,299

​

571,051

​

81,659

Accrued expenses

​

—

​

1,991,217

​

284,740

Others

​

196,342

​

304,707

​

43,573

Less: valuation allowance

​

(715,258)

​

(2,545,501)

​

(364,002)

Total deferred tax assets

​

158,383

​

321,474

​

45,970

Total deferred tax liabilities

​

(249,159)

​

(191,366)

​

(27,365)