v3.26.1
PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION - Condensed Statements of Results of Operations (Details)
 12 Months Ended
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Condensed Statements of Results of Operations        
Total operating expenses ¥ (933,184,599) $ (133,443,623) ¥ (750,306,678) ¥ (891,239,250)
Interest income 26,464,512 3,784,375 37,089,488 35,492,190
Loss before income taxes (62,369,179) (8,918,674) (216,807,189) (282,028,866)
Income tax expense (22,983,591) (3,286,610) (23,606,550) (10,192,884)
Net loss (39,385,588) $ (5,632,064) (193,200,639) (271,835,982)
Parent | Reportable Legal Entities        
Condensed Statements of Results of Operations        
Total operating expenses (12,321,808)   (13,025,259) (17,739,201)
Share of loss from subsidiaries, consolidated VIE and VIE's subsidiaries (36,346,156)   (195,199,614) (270,498,551)
Interest income 9,282,376   15,024,234 16,401,770
Loss before income taxes (39,385,588)   (193,200,639) (271,835,982)
Net loss ¥ (39,385,588)   ¥ (193,200,639) ¥ (271,835,982)