v3.26.1
Organization and Principal Activities - Schedule of Consolidated Financial Statements (Details) - Variable Interest Entity, Primary Beneficiary [Member]
 12 Months Ended
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Dec. 31, 2025
USD ($)
Current assets:          
Cash ¥ 11,699,127   ¥ 3,897,892   $ 1,672,953
Amounts due from inter-company entities   15,356,140  
Prepayments and other current assets, net 11,054,550   4,426,665   1,580,779
Accounts receivable 164,207   156,770   23,481
Total current assets 31,609,884   33,379,467   4,520,152
Non-current assets:          
Property and equipment, net 142,306,682   146,646,206   20,349,585
Land use rights, net 32,980,543   33,927,238   4,716,155
Intangible assets, net 5,634   7,749   806
Right-of-use assets 54,080,188   51,906,613   7,733,364
Other non-current asset 7,800,000   1,100,000   1,115,385
Total non-current assets 237,173,047   233,587,806   33,915,295
Total assets 268,782,931   266,967,273   38,435,447
Current liabilities          
Short-term borrowings 84,000,000   84,000,000   12,011,840
Accounts payable 3,964,037   367,678   566,850
Contract liabilities 7,796,228   5,595,491   1,114,846
Salary and welfare payable 1,739,339   1,779,265   248,722
Tax payable 3,215,855   2,139,976   459,861
Income tax payable 179,316   213,495   25,642
Amount due to inter-company entities 309,551,096   20,645,000   44,265,218
Accrued liabilities and other current liabilities 11,046,243   7,457,837   1,579,591
Operating lease liabilities, current 10,479,626   9,208,569   1,498,567
Total current liabilities 433,593,043   133,224,796   62,002,980
Non-current liabilities          
Amounts due to Affected Entity, non-current   158,514,326  
Operating lease liabilities, non-current 38,439,295   38,352,135   5,496,746
Other non-current liabilities 1,000,000   1,000,000   142,998
Total non-current liabilities 39,439,295   197,866,461   5,639,744
Total liabilities 473,032,338   331,091,257   67,642,724
Net revenues from continuing operations 30,606,575 $ 4,376,682 32,139,658 ¥ 48,374,296  
Net revenues from discontinued operation 1,617,904  
Net loss from continuing operations (34,139,026) (4,881,816) (21,277,736) (100,474,594)  
Net loss from discontinued operation (23,394,661)  
Net cash (used in)/provided by operating activities 17,518,687 2,505,139 (16,099,979) (16,213,871)  
Net cash used in investing activities (13,617,452) (1,947,270) (554,082) (7,576,283)  
Net cash provided by financing activities 3,900,000 557,693 8,750,000 2,227,473  
Net changes in cash and cash equivalents 7,801,235 $ 1,115,562 (7,904,061) ¥ (21,562,681)  
Related Party          
Current assets:          
Amounts due from a related party 8,692,000   9,542,000   1,242,939
Current liabilities          
Amounts due to related parties ¥ 1,621,303   ¥ 1,817,485   $ 231,843