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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Foreign Currency Translation (Details) - ¥ / $
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2018
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES      
Year-end spot rate 6.8033 7.1383 6.8683
Average rate 7.0077 6.8767 6.5400