v3.26.3
BANK LOANS - Short-term bank loans - Narrative (Details)
12 Months Ended
Jun. 11, 2026
CNY (¥)
Jun. 11, 2026
USD ($)
Jun. 06, 2026
CNY (¥)
Jun. 06, 2026
USD ($)
Jun. 02, 2026
CNY (¥)
Jun. 02, 2026
USD ($)
Jun. 18, 2025
CNY (¥)
Jun. 18, 2025
USD ($)
Jun. 03, 2025
CNY (¥)
Jun. 30, 2026
CNY (¥)
Jun. 30, 2026
USD ($)
Jun. 30, 2025
CNY (¥)
Jun. 30, 2024
CNY (¥)
Jun. 06, 2026
USD ($)
Jun. 02, 2026
USD ($)
May 15, 2026
CNY (¥)
May 15, 2026
USD ($)
Jun. 03, 2025
USD ($)
BANK LOANS                                    
Proceeds from debt                   ¥ 15,305,000 $ 2,255,678 ¥ 10,476,000 ¥ 11,581,000          
Interest expense on bank loan                   ¥ 312,841 $ 46,107 ¥ 343,159 ¥ 332,881          
Industry and Commercial Bank of China ("ICBC") | Revolving loan facility                                    
BANK LOANS                                    
Proceeds from debt     ¥ 10,000,000 $ 1,473,818                            
Term of debt     1 year 1 year                            
Collateral value of debt     ¥ 17,000,000                     $ 2,400,000        
China Construction Bank | Revolving loan facility                                    
BANK LOANS                                    
Term of debt                 12 months                  
Face amount of debt                 ¥ 1,105,000                 $ 162,857
Interest rate (as a percent)                 3.65%                 3.65%
Industry and Commercial Bank of China ("ICBC") Two | Revolving loan facility                                    
BANK LOANS                                    
Proceeds from debt             ¥ 476,000 $ 70,154                    
Term of debt             360 days 360 days                    
Interest rate (as a percent)             2.75% 2.75%                    
Industry and Commercial Bank of China ("ICBC") Three | Revolving loan facility                                    
BANK LOANS                                    
Proceeds from debt         ¥ 10,000,000 $ 1,473,818                        
Term of debt         1 year 1 year                        
Collateral value of debt         ¥ 17,000,000                   $ 2,500,000      
China Construction Bank Two | Revolving loan facility                                    
BANK LOANS                                    
Face amount of debt                               ¥ 1,105,000 $ 162,857  
Interest rate (as a percent)                               3.60% 3.60%  
Industry and Commercial Bank of China ("ICBC") Four | Revolving loan facility                                    
BANK LOANS                                    
Proceeds from debt ¥ 200,000 $ 29,476                                
Term of debt 360 days 360 days                                
Interest rate (as a percent) 2.75% 2.75%