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Concentration - Schedules of Concentrations of Continuing Operations (Details) - Customer Concentration Risk
¥ in Thousands, $ in Thousands
12 Months Ended
Feb. 29, 2024
USD ($)
Feb. 28, 2023
USD ($)
Feb. 29, 2024
CNY (¥)
Revenue | Customer A      
Concentration Risk [Line Items]      
Revenues from customer   $ 7,381  
Concentration Risk, Percentage   22.00%  
Revenue | Major Customers      
Concentration Risk [Line Items]      
Revenues from customer   $ 7,381  
Concentration Risk, Percentage   22.00%  
Accounts Receivable | Customer B      
Concentration Risk [Line Items]      
Accounts Receivable from customer $ 129   ¥ 927
Concentration Risk, Percentage 29.00%    
Accounts Receivable | Customer C      
Concentration Risk [Line Items]      
Accounts Receivable from customer $ 92   662
Concentration Risk, Percentage 20.00%    
Accounts Receivable | Customer D      
Concentration Risk [Line Items]      
Accounts Receivable from customer $ 54   387
Concentration Risk, Percentage 12.00%    
Accounts Receivable | Major Customers      
Concentration Risk [Line Items]      
Accounts Receivable from customer $ 275   ¥ 1,976
Concentration Risk, Percentage 61.00%