v3.26.1
SCHEDULE I-ADDITIONAL INFORMATION OF THE PARENT COMPANY - CONDENSED STATEMENTS OF CASH FLOWS (Details)
 12 Months Ended
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
CASH FLOWS FROM OPERATING ACTIVITIES        
Net income (loss) ¥ (29,081,925) $ (4,158,660) ¥ (306,810,286) ¥ 35,517,634
Adjustments to reconcile net income (loss) to net cash provided by operating activities:        
Equity loss of subsidiaries and VIEs 1,927,859 275,680 4,001,129 31,610,752
Foreign exchange gain or loss 517,288 73,971 (1,233,807) (125,893)
Changes in operating assets and liabilities:        
Prepayments 11,605,802 1,659,609 15,898,495 (10,364,572)
Other current assets (16,781,501) (2,399,723) 77,417,243 (16,200,082)
Amount due from subsidiaries (17,426,110) (2,491,901) (5,180,912) (32,868,136)
Accrued expenses and other current liabilities (20,912,779) (2,990,488) (4,980,465) (56,200,218)
Deferred revenue (15,446,314) (2,208,793) (63,623,203) 21,246,496
Net cash used in operating activities (52,254,816) (7,472,339) (238,851,936) (47,687,219)
Proceeds from disposal of short-term bank deposits 3,528,507,441 504,569,853 1,757,680,000 2,868,625,000
Purchases of short-term investments (575,301,000) (82,266,949) (2,990,374,400) (1,778,550,000)
Cash provided by (used in) investing activities 2,971,800,293 424,961,790 (1,074,492,728) 414,184,628
Repurchase of ordinary shares     (105,509,037)  
Dividend distributed to shareholders (2,150,781,250) (307,557,628) (2,101,465,492)  
Cash used in financing activities (2,150,781,250) (307,557,628) (2,206,974,529) (965)
Effect of foreign exchange rate changes (24,966,731) (3,570,196) 48,740,158 94,834,375
Net increase (decrease) in cash, cash equivalents and restricted cash 743,797,496 106,361,627 (3,471,579,035) 461,330,819
Cash, cash equivalent and restricted cash at the beginning of the year 1,037,411,283 148,347,841 4,508,990,318 4,047,659,499
Cash, cash equivalent and restricted cash at the end of the year 1,781,208,779 254,709,468 1,037,411,283 4,508,990,318
Parent Company        
CASH FLOWS FROM OPERATING ACTIVITIES        
Net income (loss) (29,081,925) (4,158,660) (306,810,286) 35,517,634
Adjustments to reconcile net income (loss) to net cash provided by operating activities:        
Equity loss of subsidiaries and VIEs 39,512,619 5,650,230 502,190,943 190,965,494
Foreign exchange gain or loss       (123,163)
Changes in operating assets and liabilities:        
Prepayments 41,868 5,987 127,357 55,435
Other current assets 44,252,958 6,328,090 62,701,861 (88,851,970)
Amount due from subsidiaries (351,440) (50,255)    
Accrued expenses and other current liabilities (5,869,344) (839,305) (2,564,628) 15,719,885
Deferred revenue 21,425 3,063 (7,373,700) (11,583,600)
Net cash used in operating activities 48,526,161 6,939,150 248,271,547 141,699,715
Proceeds from disposal of short-term bank deposits 3,264,831,200 466,864,652 1,437,680,000 2,098,625,000
Purchases of short-term investments (535,301,000) (76,547,025) (2,990,374,400) (1,778,550,000)
Investment in subsidiaries       (16,196,850)
Cash provided by (used in) investing activities 2,729,530,200 390,317,627 (1,552,694,400) 303,878,150
Repurchase of ordinary shares     (105,509,037)  
Dividend distributed to shareholders (2,150,781,250) (307,557,628) (2,101,465,492)  
Cash used in financing activities (2,150,781,250) (307,557,628) (2,206,974,529)  
Effect of foreign exchange rate changes (24,362,140) (3,483,740) 49,348,465 96,480,231
Net increase (decrease) in cash, cash equivalents and restricted cash 602,912,971 86,215,409 (3,462,048,917) 542,058,096
Cash, cash equivalent and restricted cash at the beginning of the year 654,351,902 93,571,077 4,116,400,819 3,574,342,723
Cash, cash equivalent and restricted cash at the end of the year ¥ 1,257,264,873 $ 179,786,486 ¥ 654,351,902 ¥ 4,116,400,819