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Concentration - Schedules of Concentrations of Continuing Operations (Details) - 12 months ended Feb. 28, 2023 - Customer Concentration Risk
¥ in Thousands, $ in Thousands
CNY (¥)
USD ($)
USD ($)
Revenue | Customer A      
Concentration Risk [Line Items]      
Revenues from customer ¥ 7,381 $ 1,065  
Concentration Risk, Percentage 22.00% 22.00%  
Revenue | Major Customers      
Concentration Risk [Line Items]      
Revenues from customer ¥ 7,381 $ 1,065  
Concentration Risk, Percentage 22.00% 22.00%  
Accounts Receivable | Customer B      
Concentration Risk [Line Items]      
Accounts Receivable from customer ¥ 492   $ 71
Concentration Risk, Percentage 55.00% 55.00%  
Accounts Receivable | Customer C      
Concentration Risk [Line Items]      
Accounts Receivable from customer ¥ 100   14
Concentration Risk, Percentage 11.00% 11.00%  
Accounts Receivable | Major Customers      
Concentration Risk [Line Items]      
Accounts Receivable from customer ¥ 592   $ 85
Concentration Risk, Percentage 66.00% 66.00%