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LONG TERM INVESTMENTS - Equity investments (Details) - CNY (¥)
¥ in Thousands
12 Months Ended
Sep. 30, 2024
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 (18,921) (18,721) ¥ (17,200)
Equity investment without readily determinable fair value   ¥ 66,648  
Cost method investment amount 37,660    
Fair value adjustment ¥ 28,790