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Share capital and additional paid-in capital (Details Narrative) - CNY (¥)
 12 Months Ended
Dec. 31, 2025
Jun. 30, 2010
Statement [Line Items]    
Common stock, shares issued 36,000,000,000 20,000,000
Common stock, par value ¥ 0.00005  
Common stock, increased value ¥ 8,500,000  
March 1, 2018 [Member] | Ordinary Shares [Member]    
Statement [Line Items]    
Common stock, shares issued 2,000,000,000  
Common stock, par value ¥ 0.00005  
Dividend ¥ 100,000  
March 1, 2018 [Member] | Ordinary Share One [Member]    
Statement [Line Items]    
Common stock, shares issued 1,000,000,000  
Common stock, par value ¥ 0.00005  
March 1, 2018 [Member] | Ordinary Share Two [Member]    
Statement [Line Items]    
Common stock, shares issued 1,000,000,000  
Common stock, par value ¥ 0.00005  
Common stock, increased value ¥ 50,000