v3.26.1
Share capital and additional paid in capital (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 12 Months Ended
Mar. 31, 2025
shares
Mar. 31, 2024
CNY (¥)
shares
Nov. 30, 2025
shares
Sep. 30, 2025
shares
Dec. 31, 2025
CNY (¥)
shares
Dec. 31, 2024
CNY (¥)
shares
Dec. 31, 2025
USD ($)
Oct. 30, 2025
$ / shares
Jun. 30, 2025
shares
Apr. 30, 2025
shares
Dec. 31, 2023
CNY (¥)
Dec. 31, 2022
CNY (¥)
Share capital and additional paid in capital (Details) [Line Items]                        
Equity (in Yuan Renminbi)         ¥ (892,674,000) ¥ (754,134,000) $ (127,651)       ¥ (43,605,000) ¥ 438,874,000
Shares issued par value (in Dollars per share) | $ / shares               $ 0.01        
Authorized share per share (in Dollars per share) | $ / shares               $ 0.000001        
Class A ordinary shares [Member]                        
Share capital and additional paid in capital (Details) [Line Items]                        
Share issued           27,888,690            
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 (in Yuan Renminbi) | ¥   ¥ 34,100,000                    
Company issued an aggregate 3,000,000   27,776,000,000   9,992,998              
Shares issued                 68,181,600 700,000    
Class of ordinary shares     12,800,000,000                  
Cash consideration received         14,976,000,000              
Class A ordinary shares [Member] | Private Placement To Institutional Investors [Member]                        
Share capital and additional paid in capital (Details) [Line Items]                        
Warrants exercisable period following date of issuance   6 months                    
Warrants expiry period   5 years                    
Class A ordinary shares [Member] | Registered Direct Offering To Financial Advisor [Member]                        
Share capital and additional paid in capital (Details) [Line Items]                        
Class of warrants or rights number of securities covered by warrants or rights   2,380,950                    
Class D Ordinary Shares [Member]                        
Share capital and additional paid in capital (Details) [Line Items]                        
Company issued an aggregate       16,000,000                
Issued capital [member]                        
Share capital and additional paid in capital (Details) [Line Items]                        
Equity (in Yuan Renminbi)         ¥ 239,000 ¥ 186,678,000 $ 34       ¥ 165,183,000 ¥ 146,730,000
Issued capital [member] | Ordinary shares [member] | Top of range [member]                        
Share capital and additional paid in capital (Details) [Line Items]                        
Equity (in Yuan Renminbi) | ¥         ¥ 1,000