v3.25.2
Share capital and additional paid in capital - Additional Information (Details)
¥ in Thousands, $ in Thousands
1 Months Ended 12 Months Ended
Mar. 31, 2024
CNY (¥)
shares
Dec. 31, 2024
CNY (¥)
shares
Dec. 31, 2023
CNY (¥)
shares
Dec. 31, 2024
USD ($)
Nov. 30, 2023
shares
May 31, 2023
shares
Disclosure of changes in combined capital and additional paid in capital            
Subscription receivable on shares   ¥ 4,696 ¥ 4,696 $ 643    
Registered direct offering | ADR            
Disclosure of changes in combined capital and additional paid in capital            
Class of warrants or rights number of securities covered by warrants or rights 2,380,950          
Class A ordinary shares [Member]            
Disclosure of changes in combined capital and additional paid in capital            
Shares Issued           35,000,000
Share issued   27,888,690 108,760,310      
Class A ordinary shares [Member] | Private placement to institutional investors            
Disclosure of changes in combined capital and additional paid in capital            
Shares issued during period 47,619,050          
Class of warrants or rights number of securities covered by warrants or rights 47,619,050          
Proceeds from the issuance of shares and warrants | ¥ ¥ 34,100          
Warrants exercisable period following date of issuance 6 months          
Warrants expiry period 5 years          
Class A ordinary shares [Member] | Institution Investor [Member]            
Disclosure of changes in combined capital and additional paid in capital            
Shares Issued         66,000,000