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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%

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value.

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