Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

INCOME TAXES - Changes in Unrecognized Tax Benefits (Details)

v3.21.4
INCOME TAXES - Changes in Unrecognized Tax Benefits (Details)
12 Months Ended
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2019
USD ($)
Sep. 30, 2021
CNY (¥)
Income Tax Contingency [Line Items]        
Balance at beginning period $ 3,188,615 $ 4,176,537    
Addition for tax positions of the current year 37,407 154,041 $ 993,194  
Lapse of statute of limitations (967,698) (1,054,163) (915,440)  
Effect of exchange rate changes 171,322 220,281    
Balance at ending period $ 2,354,832 $ 3,188,615 $ 4,176,537  
Minimum        
Income Tax Contingency [Line Items]        
Possible change on company's unrecognized tax benefits for next twelve months | ¥       ¥ 0
Maximum        
Income Tax Contingency [Line Items]        
Possible change on company's unrecognized tax benefits for next twelve months | ¥       ¥ 9,360,974