XML 124 R102.htm IDEA: XBRL DOCUMENT v3.25.1
Subsequent events (Details)
12 Months Ended
Apr. 17, 2025
CNY (¥)
shares
Apr. 17, 2025
USD ($)
$ / shares
shares
Dec. 31, 2024
CNY (¥)
shares
Dec. 31, 2024
USD ($)
$ / shares
shares
Dec. 31, 2023
CNY (¥)
Dec. 31, 2022
CNY (¥)
Subsequent events            
Treasury stock amount | ¥     ¥ 528,393,708   ¥ 420,660,053 ¥ 145,866,006
American Depositary Shares            
Subsequent events            
Repurchased shares, average price | $ / shares       $ 2.0232    
Share Repurchase Program 2022            
Subsequent events            
Treasury stock amount     ¥ 5,311,340,628 $ 727,650,683    
Share Repurchase Program 2022 | American Depositary Shares            
Subsequent events            
Number of shares repurchased     169,335,780 169,335,780    
Repurchased shares, average price | $ / shares       $ 4.2971    
Share Repurchase Program 2022 | Class A ordinary shares            
Subsequent events            
Number of shares repurchased     169,335,780 169,335,780    
Subsequent event | Share Repurchase Program 2022            
Subsequent events            
Treasury stock amount ¥ 95,249,755 $ 13,049,163        
Subsequent event | Share Repurchase Program 2022 | American Depositary Shares            
Subsequent events            
Number of shares repurchased 4,822,082 4,822,082        
Repurchased shares, average price | $ / shares   $ 2.7061        
Subsequent event | Share Repurchase Program 2022 | Class A ordinary shares            
Subsequent events            
Number of shares repurchased 4,822,082 4,822,082