v3.26.1
Organization and Principal Activities (Details)
$ / shares in Units, ¥ in Thousands, $ in Thousands
 6 Months Ended
May 09, 2025
USD ($)
$ / shares
shares
May 06, 2025
shares
Mar. 24, 2025
CNY (¥)
Feb. 06, 2025
shares
Jan. 24, 2025
USD ($)
$ / shares
shares
Dec. 28, 2023
CNY (¥)
Mar. 31, 2026
USD ($)
$ / shares
shares
Mar. 31, 2026
CNY (¥)
shares
Mar. 31, 2025
CNY (¥)
shares
Sep. 30, 2025
$ / shares
shares
Nov. 08, 2024
shares
Jun. 06, 2024
USD ($)
$ / shares
shares
Organization and Principal Activities [Line Items]                        
Authorized share capital (in Dollars) | $ $ 500,000,000       $ 48,000,000              
Common stock, shares authorized 5,000,000,000,000,000       4,800,000,000              
Preferred stock, share issued 50,000,000,000,000,000                      
Preferred stock, par value (in Dollars per share) | $ / shares $ 0.0000001       $ 0.01              
Designated preferred shares         5,000,000              
Issued ordinary shares   1                    
Percentage of annual rate           3.00%            
Repaid notes payable             ¥ 60,231      
Topone [Member]                        
Organization and Principal Activities [Line Items]                        
Issued and outstanding equity percentage     100.00%                  
ADS [Member]                        
Organization and Principal Activities [Line Items]                        
Common stock, par value (in Dollars per share) | $ / shares $ 0.0099999                      
Sub divided unissued shares 100,000                      
Acquisition of Topone Consultants Limited [Member]                        
Organization and Principal Activities [Line Items]                        
Total consideration | ¥     ¥ 1,107                  
Acquisition of Alpha Mind [Member]                        
Organization and Principal Activities [Line Items]                        
Total consideration | ¥           ¥ 180,000            
Alpha Mind [Member]                        
Organization and Principal Activities [Line Items]                        
Acquisition of issued and outstanding shares           100.00%            
New Authorized Share Capital [Member]                        
Organization and Principal Activities [Line Items]                        
Ordinary share issued         4,374,500,000,000,000              
Common stock, par value (in Dollars per share) | $ / shares         $ 0.01              
Authorized share capital (in Dollars) | $         $ 50,000,000,000,000              
Common stock, shares authorized         5,000,000,000,000,000              
Designated preferred shares         500,000,000,000              
Unissued ordinary shares         4,374,495,805,000,000              
Share Subdivision [Member]                        
Organization and Principal Activities [Line Items]                        
Common stock, par value (in Dollars per share) | $ / shares $ 0.0000001                      
Share Subdivision [Member] | Capital Units [Member]                        
Organization and Principal Activities [Line Items]                        
Common stock, par value (in Dollars per share) | $ / shares 0.0000001                      
Share Subdivision [Member] | Common Stock [Member]                        
Organization and Principal Activities [Line Items]                        
Common stock, par value (in Dollars per share) | $ / shares 0.0000001                      
Capital Reduction [Member]                        
Organization and Principal Activities [Line Items]                        
Common stock, par value (in Dollars per share) | $ / shares $ 0.01                      
Authorized share capital (in Dollars) | $ $ 50,000,000,000,000                      
Common stock, shares authorized 500,000,000,000,000,000,000                      
Share issued par value (in Dollars per share) | $ / shares $ 0.01                      
Shares authorized 500,000,000,000,000,000,000                      
Capital Reduction [Member] | Common Stock [Member]                        
Organization and Principal Activities [Line Items]                        
Authorised and Unissued Share Capital             49,999,500,000,000 49,999,500,000,000        
Capital Reduction [Member] | XChange TEC.INC [Member]                        
Organization and Principal Activities [Line Items]                        
Common stock, par value (in Dollars per share) | $ / shares $ 0.0000001                      
Burgeon Capital, Inc. [Member] | Acquisition of Alpha Mind [Member]                        
Organization and Principal Activities [Line Items]                        
Accrued interest (in Dollars) | $                       $ 27,342
Burgeon Capital, Inc. [Member] | Promissory Note [Member] | Acquisition of Alpha Mind [Member]                        
Organization and Principal Activities [Line Items]                        
Issued notes | ¥           ¥ 27,000            
MMTEC, Inc [Member]                        
Organization and Principal Activities [Line Items]                        
Repaid notes payable | ¥               60,231      
MMTEC, Inc [Member] | Acquisition of Alpha Mind [Member]                        
Organization and Principal Activities [Line Items]                        
Repaid notes payable | ¥               ¥ 6,211      
MMTEC, Inc [Member] | Promissory Note [Member] | Acquisition of Alpha Mind [Member]                        
Organization and Principal Activities [Line Items]                        
Issued notes | ¥           ¥ 153,000            
Class A Ordinary Shares [Member]                        
Organization and Principal Activities [Line Items]                        
Ordinary share issued             111,851,094,785     111,851,094,785    
Common stock, par value (in Dollars per share) | $ / shares         $ 0.01   $ 0.0000001     $ 0.0000001    
Common stock, shares authorized             4,374,500,000,000,000     4,374,500,000,000,000    
Number of share ratio   2,400                 12,000,000  
Designated common stock         4,195,000,000              
Class A Ordinary Shares [Member] | ADS [Member]                        
Organization and Principal Activities [Line Items]                        
Issued ordinary shares   120                    
Number of cancellation ordinary shares             437,445,625,500,000,000,000 437,445,625,500,000,000,000        
Class A Ordinary Shares [Member] | Common Stock [Member]                        
Organization and Principal Activities [Line Items]                        
Common stock, par value (in Dollars per share) | $ / shares         $ 0.01              
Issued ordinary shares 437,450,000,000,000,000,000                      
Shares authorized [1]                 1,668,000,000      
Class A Ordinary Shares [Member] | New Authorized Share Capital [Member]                        
Organization and Principal Activities [Line Items]                        
Common stock, par value (in Dollars per share) | $ / shares         $ 0.01              
Class A Ordinary Shares [Member] | Share Subdivision [Member]                        
Organization and Principal Activities [Line Items]                        
Common stock, par value (in Dollars per share) | $ / shares $ 0.0000001           $ 0.0000001          
Class A Ordinary Shares [Member] | Capital Reduction [Member]                        
Organization and Principal Activities [Line Items]                        
Issued ordinary shares 4,374,500,000,000,000                      
Class A Ordinary Shares [Member] | Burgeon Capital, Inc. [Member] | Acquisition of Alpha Mind [Member]                        
Organization and Principal Activities [Line Items]                        
Ordinary share issued                       58,590,000
Common stock, par value (in Dollars per share) | $ / shares                       $ 0.0000001
Class A Ordinary Shares [Member] | Ads [Member]                        
Organization and Principal Activities [Line Items]                        
Number of share ratio       12,000,000             600,000  
Issued ordinary shares   1   1                
Class B Ordinary Shares [Member]                        
Organization and Principal Activities [Line Items]                        
Ordinary share issued             11,863,927,890     11,863,927,890    
Common stock, par value (in Dollars per share) | $ / shares             $ 0.0000001     $ 0.0000001    
Common stock, shares authorized             625,000,000,000,000     625,000,000,000,000    
Preferred stock, share issued 50,000,000,000,000,000                      
Designated common stock         600,000,000              
Class B Ordinary Shares [Member] | ADS [Member]                        
Organization and Principal Activities [Line Items]                        
Issued ordinary shares 62,500,000,000,000,000,000                      
Class B Ordinary Shares [Member] | Common Stock [Member]                        
Organization and Principal Activities [Line Items]                        
Common stock, par value (in Dollars per share) | $ / shares         $ 0.01              
Issued ordinary shares 625,000,000,000,000                      
Class B Ordinary Shares [Member] | New Authorized Share Capital [Member]                        
Organization and Principal Activities [Line Items]                        
Ordinary share issued         625,000,000,000,000              
Common stock, par value (in Dollars per share) | $ / shares         $ 0.01              
Unissued ordinary shares         624,999,400,000,000              
Class B Ordinary Shares [Member] | Share Subdivision [Member]                        
Organization and Principal Activities [Line Items]                        
Common stock, par value (in Dollars per share) | $ / shares $ 0.0000001                      
Issued ordinary shares 62,500,000,000,000,000,000                      
Class B Ordinary Shares [Member] | Capital Reduction [Member]                        
Organization and Principal Activities [Line Items]                        
Issued ordinary shares 62,499,375,000,000,000,000                      
Preferred Stock [Member]                        
Organization and Principal Activities [Line Items]                        
Preferred stock, share issued 500,000,000,000                      
Preferred stock, par value (in Dollars per share) | $ / shares         $ 0.01              
Preferred Stock [Member] | New Authorized Share Capital [Member]                        
Organization and Principal Activities [Line Items]                        
Unissued ordinary shares         499,995,000,000              
Preferred Stock [Member] | Capital Reduction [Member]                        
Organization and Principal Activities [Line Items]                        
Preferred stock, share issued 49,999,500,000,000,000                      
[1] Retroactively restated to give effect to a share consolidation at a ratio of one hundred thousandth to one (100,000:1) ordinary shares effective on January 24, 2025 and the Capital Reduction effective on May 9, 2025.