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TAXES - Additional Information (Details) - USD ($)
12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2018
Investments, Owned, Federal Income Tax Note [Line Items]        
Corporate income tax rate (in percent) 7.60% 14.90% 14.90%  
Decrease in taxes due to tax holiday $ 458,163 $ 603,091 $ 710,083  
Benefit of the tax holidays on net income per share $ 0.013 $ 0.020 $ 0.024  
Chengdu QLS and subsidiaries        
Investments, Owned, Federal Income Tax Note [Line Items]        
Favorable tax rate (as a percent) 15.00% 15.00% 15.00% 15.00%
HNTE        
Investments, Owned, Federal Income Tax Note [Line Items]        
Favorable tax rate (as a percent) 15.00% 15.00% 15.00%  
Hong Kong | Scenario One        
Investments, Owned, Federal Income Tax Note [Line Items]        
Favorable tax rate (as a percent)     8.25%  
Base profit for calculating tax rate     $ 2,000,000  
Hong Kong | Scenario Two        
Investments, Owned, Federal Income Tax Note [Line Items]        
Favorable tax rate (as a percent)     16.50%  
Base profit for calculating tax rate     $ 2,000,000  
China        
Investments, Owned, Federal Income Tax Note [Line Items]        
Corporate income tax rate (in percent) 25.00%