v3.26.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Non-controlling interests (Details)
12 Months Ended
Sep. 30, 2023
USD ($)
Sep. 30, 2023
CNY (¥)
Sep. 30, 2025
USD ($)
Sep. 30, 2024
USD ($)
Sep. 30, 2021
Sep. 30, 2020
Noncontrolling Interest            
Payments to acquire businesses and interest in affiliates $ 28,356 ¥ 200,000        
Percentage of additional equity interest acquired 0.20% 0.20%        
Noncontrolling interests     $ 1,019,376 $ 1,349,505    
Chengdu QLS and subsidiaries            
Noncontrolling Interest            
Acquired equity interest, subsidiaries, percentage         7.76%  
Chengdu QLS and subsidiaries            
Noncontrolling Interest            
Ownership interest acquired (in percent)         79.51% 71.75%
Gansu QLS            
Noncontrolling Interest            
Ownership interest acquired (in percent) 79.71% 79.71%        
Gansu QLS            
Noncontrolling Interest            
Ownership interest (in percent)     0.786%      
Noncontrolling interests     $ 833,496 1,146,121    
Chengdu QLS and subsidiaries            
Noncontrolling Interest            
Ownership interest (in percent)     20.29%      
Noncontrolling interests     $ 163,835 181,315    
Zhongqiao Youguan E Commerce Service Co. Ltd            
Noncontrolling Interest            
Ownership interest (in percent)     49.00%      
Noncontrolling interests     $ 22,045 $ 22,069