v3.26.1
Share capital and additional paid in capital (Details) - CNY (¥)
1 Months Ended 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Nov. 30, 2025
Sep. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Jun. 30, 2025
Apr. 30, 2025
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] | Ordinary shares [member] | Top of range [member]                
Share capital and additional paid in capital (Details) [Line Items]                
Equity (in Yuan Renminbi)         ¥ 1,000