v3.26.3
Summary of Significant Accounting Policies (Details)
6 Months Ended 12 Months Ended
Apr. 30, 2026
USD ($)
segment
Apr. 30, 2026
CNY (¥)
segment
Apr. 30, 2025
USD ($)
Oct. 31, 2025
USD ($)
segment
Oct. 31, 2025
CNY (¥)
segment
Oct. 31, 2024
USD ($)
Oct. 31, 2023
USD ($)
Apr. 30, 2026
CNY (¥)
Oct. 31, 2025
CNY (¥)
Summary of Significant Accounting Policies (Details) [Line Items]                  
Deposit insurance coverage amount (in Yuan Renminbi) | ¥               ¥ 500,000 ¥ 500,000
Deposits number of working days repaid 7 days 7 days   7 days 7 days        
Cash amount (in Yuan Renminbi) | ¥               ¥ 500,000 ¥ 500,000
Effects on adoption of ASC 326 $ 3,553     $ 0   $ 3,553      
Allowance for credit losses $ 2,469,626     $ 1,595,831   741,753 $ 803,170    
Prepaid expenses with a benefit period 1 year 1 year   1 year 1 year        
Impairment $ 0   $ 0 $ 0   33,841 0    
Unperformed obligations 5,200,000 ¥ 35,700,000   1,120,000 ¥ 8,000,000        
Contract liabilities       0   0 $ 4,439,871    
Contract liabilities $ 1,044,553     $ 246   $ 0      
Percentage of tax benefit 25.00% 25.00% 25.00% 25.00% 25.00% 25.00% 25.00%    
Number of operating segment (in segment) | segment 2 2   1 1        
Number of reported segment (in segment) | segment 2 2   1 1        
Wastewater Treatment Revenue Member                  
Summary of Significant Accounting Policies (Details) [Line Items]                  
Unperformed obligations $ 6,000,000 ¥ 41,000,000              
Income Taxes [Member]                  
Summary of Significant Accounting Policies (Details) [Line Items]                  
Percentage of tax benefit 50.00% 50.00%   50.00% 50.00%