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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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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9054-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI https://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13531-108611 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13537-108611 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI https://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592 + Details
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