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LONG TERM INVESTMENTS - Equity investments (Details) - CNY (¥)
¥ in Thousands
12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
LONG TERM INVESTMENTS    
Cost method investment ¥ 18,921 ¥ 18,921
Equity investment 66,448  
Impairment on cost method investment (18,721) (17,231)
Equity investment without readily determinable fair value 66,648 ¥ 1,690
Cost method investment amount 37,660  
Fair value adjustment ¥ 28,790