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Preferred shares (Details Narrative)
¥ in Millions
 1 Months Ended 8 Months Ended 12 Months Ended
Feb. 23, 2023
shares
May 23, 2019
CNY (¥)
shares
Nov. 22, 2018
shares
Jan. 31, 2022
USD ($)
shares
Jul. 31, 2021
USD ($)
shares
Jun. 30, 2021
USD ($)
shares
Jun. 30, 2021
CNY (¥)
shares
Apr. 30, 2021
USD ($)
shares
Oct. 31, 2019
CNY (¥)
shares
Jan. 31, 2019
USD ($)
shares
Aug. 31, 2017
CNY (¥)
shares
Jul. 31, 2016
CNY (¥)
shares
Jul. 31, 2015
CNY (¥)
shares
Sep. 14, 2023
CNY (¥)
Dec. 31, 2025
Dec. 31, 2022
CNY (¥)
Dec. 31, 2021
CNY (¥)
Class of Stock [Line Items]                                  
Implied valuation | $       $ 800,000,000                          
Percentage of ordinary shares       10.00%                          
Offering price percentage                             75.00%    
Compound interest rate of capital contribution                             10.00%    
Accretion of preferred shares | ¥                           ¥ 762.2   ¥ 188.3 ¥ 101.5
Series C Preferred Stock [Member]                                  
Class of Stock [Line Items]                                  
Shares issued               1,955,000   1,877,135              
Consideration | $       $ 19,700,000       $ 15,000,000.0   $ 17,400,000              
Excess stock shares Issued               782,000   150,171              
Shares authorized to be repurchased       276,007.50                          
Series D1 Preferred Shares [Member]                                  
Class of Stock [Line Items]                                  
Shares issued           399,496 399,496                    
Consideration | ¥             ¥ 20.0                    
Series D2 Preferred Shares [Member]                                  
Class of Stock [Line Items]                                  
Excess stock shares Issued           260,667 260,667                    
Shenzhen Ruiyuan Investment Enterprise LLP [Member] | Series PreA Financing [Member]                                  
Class of Stock [Line Items]                                  
Shares issued                         146,903        
Consideration | ¥                         ¥ 30.0        
Shenzhen Ruiyuan Investment Enterprise, LLP [Member]                                  
Class of Stock [Line Items]                                  
Number of shares issued in transaction                         108,891        
Ruiyuan Technology Holdings Limited [Member]                                  
Class of Stock [Line Items]                                  
Number of shares issued in transaction 559,868         4,429,111 4,429,111                    
Ruiyuan Technology Holdings Limited [Member] | Series PreA Financing [Member] | Common Stock [Member]                                  
Class of Stock [Line Items]                                  
Shares issued                   5,444,575              
Cicw Holdings Limited [Member] | Common Stock [Member]                                  
Class of Stock [Line Items]                                  
Consideration | ¥                 ¥ 6.0                
Number of shares issued in transaction                 1,015,462                
Beijing Zhongyun Ronghui Investment Center, LLP [Member]                                  
Class of Stock [Line Items]                                  
Number of shares issued in transaction 606,524                                
Beijing Zhongyun Ronghui Investment Center, LLP [Member] | Series A Financing [Member]                                  
Class of Stock [Line Items]                                  
Shares issued                       91,814          
Beijing Zhongyun Ronghui Investment Center, LLP [Member] | Series A Convertible Redeemable Preferred Shares [Member]                                  
Class of Stock [Line Items]                                  
Convertible redeemable preferred shares     4,590,703                            
Beijing Zhongyun Ronghui Investment Center, LLP [Member] | Series A Preferred Stock [Member]                                  
Class of Stock [Line Items]                                  
Shares issued   4,590,703                              
Consideration | ¥   ¥ 0.4                              
Beijing Zhongyun Ronghui Investment Center, LLP [Member] | Series B Financing [Member]                                  
Class of Stock [Line Items]                                  
Shares issued                     6,886            
Consideration | ¥                     ¥ 7.5            
Beijing Zhongyun Ronghui Investment Center, LLP [Member] | Series B Convertible Redeemable Preferred Shares [Member]                                  
Class of Stock [Line Items]                                  
Convertible redeemable preferred shares     344,303                            
Beijing Zhongyun Ronghui Investment Center, LLP [Member] | Series B Preferred Stock [Member]                                  
Class of Stock [Line Items]                                  
Shares issued   344,303                              
Consideration | ¥   ¥ 0.1                              
Hangzhou Shunying Equity Investment Enterprise LLP [Member] | Series A Financing [Member]                                  
Class of Stock [Line Items]                                  
Shares issued                       91,814          
Consideration | ¥                       ¥ 25.0          
Beijing Zhongyun Ronghui Investment Center LLP [Member] | Series A Financing [Member]                                  
Class of Stock [Line Items]                                  
Consideration | ¥                       ¥ 25.0          
Hangzhou Shunying [Member] | Series A Convertible Redeemable Preferred Shares [Member]                                  
Class of Stock [Line Items]                                  
Convertible redeemable preferred shares     4,590,703                            
Hangzhou Shunying [Member] | Series B Financing [Member]                                  
Class of Stock [Line Items]                                  
Shares issued                     6,886            
Consideration | ¥                     ¥ 7.5            
Hangzhou Shunying [Member] | Series B Convertible Redeemable Preferred Shares [Member]                                  
Class of Stock [Line Items]                                  
Convertible redeemable preferred shares     344,303                            
Ningbo Shiwei Enterprise Management Partnership (L.P.) [Member] | Series A Preferred Stock [Member]                                  
Class of Stock [Line Items]                                  
Shares issued   4,590,703                              
Consideration | ¥   ¥ 0.4                              
Huzhou Zhongze Jiameng Equity Investment Enterprise LLP [Member] | Series B Financing [Member]                                  
Class of Stock [Line Items]                                  
Shares issued                     55,088            
Consideration | ¥                     ¥ 60.0            
Zhuhai Hengqin Huarong Zhifu Investment Management Co Ltd [Member] | Series B Financing [Member]                                  
Class of Stock [Line Items]                                  
Shares issued                     91,814            
Consideration | ¥                     ¥ 100.0            
Eagle Rover Ltd [Member] | Series B Preferred Stock [Member]                                  
Class of Stock [Line Items]                                  
Shares issued                   2,754,422              
LianJia Enterprise Limited [Member] | Series B Preferred Stock [Member]                                  
Class of Stock [Line Items]                                  
Shares issued                   4,590,704              
Ningbo Shiwei Enterprise Management Partnership (L.P.) [Member]                                  
Class of Stock [Line Items]                                  
Number of shares issued in transaction 606,524                                
Ningbo Shiwei Enterprise Management Partnership (L.P.) [Member] | Series B Preferred Stock [Member]                                  
Class of Stock [Line Items]                                  
Shares issued   344,303                              
Consideration | ¥   ¥ 0.1                              
Yonghe CT Limited [Member]                                  
Class of Stock [Line Items]                                  
Number of shares issued in transaction 1,522,101                                
Yonghe CT Limited [Member] | Series D2 Preferred Shares [Member]                                  
Class of Stock [Line Items]                                  
Shares issued           651,667 651,667                    
Consideration | $           $ 5,000,000.0                      
Yonghe SI Limited [Member]                                  
Class of Stock [Line Items]                                  
Number of shares issued in transaction 110,352                                
Yonghe SI Limited [Member] | Series D2 Preferred Shares [Member]                                  
Class of Stock [Line Items]                                  
Shares issued           113,390 113,390                    
Consideration | $           $ 900,000                      
Image Digital Investment (HK) Limited [Member]                                  
Class of Stock [Line Items]                                  
Number of shares issued in transaction 8,117,877                                
Image Digital Investment (HK) Limited [Member] | Series D3 Preferred Shares [Member]                                  
Class of Stock [Line Items]                                  
Shares issued         8,341,333                        
Consideration | $         $ 64,000,000.0                        
TPP Fund II Holding F Limited [Member]                                  
Class of Stock [Line Items]                                  
Number of shares issued in transaction 2,029,469                                
TPP Fund II Holding F Limited [Member] | Series D3 Preferred Shares [Member]                                  
Class of Stock [Line Items]                                  
Shares issued         2,085,333                        
Consideration | $         $ 16,000,000.0                        
Huzhou Zhongze BVI [Member]                                  
Class of Stock [Line Items]                                  
Number of shares issued in transaction 1,119,736                                
Zhuhai Hengqin BVI [Member]                                  
Class of Stock [Line Items]                                  
Number of shares issued in transaction 1,866,227                                
Yonghe CarTech Limited [Member]                                  
Class of Stock [Line Items]                                  
Number of shares issued in transaction 1,014,735                                
United Gemini Holdings Limited [Member]                                  
Class of Stock [Line Items]                                  
Number of shares issued in transaction 388,793