v3.25.1
15. MAJOR CUSTOMERS AND VENDORS - Digital currency mining segment major suppliers (Details) - Customer Concentration Risk [Member] - Accounts receivable
6 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Canaan U.S. Inc    
Concentration risk percentage 6.00% 0.00%
Bitmain Technologies    
Concentration risk percentage 94.00% 100.00%