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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Concentration of credit risk and uncertainties (Details)
12 Months Ended
Oct. 31, 2023
USD ($)
Oct. 31, 2023
CNY (¥)
Oct. 31, 2023
CNY (¥)
Oct. 31, 2022
USD ($)
Effects of Reinsurance [Line Items]        
General insurance expense | ¥   ¥ 500,000    
Cash and due from banks | $ $ 2,383     $ 2,508
PRC        
Effects of Reinsurance [Line Items]        
General insurance expense 68,000 ¥ 500,000    
Cash and due from banks 695,000   ¥ 5,085,934  
Limited insurance $ 623,000   ¥ 4,561,614