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Acquisitions and disposals - Asset acquisitions (Details) - Puluo - CNY (¥) ¥ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Aug. 31, 2020 | Dec. 31, 2021
Asset Acquisition [Line Items] |  |
Ownership interest percentage acquired | 100.00% |
Gross consideration of asset acquired | ¥ 2,063 |
Consideration prepaid | ¥ 1,500 |
Total assets acquired |  | ¥ 3,806
Deferred tax liabilities |  | (927)
Accrued expenses and other current liabilities |  | (816)
Total liabilities assumed |  | (1,743)
Net assets acquired |  | 2,063
Medical institution license |  |
Asset Acquisition [Line Items] |  |
Total assets acquired |  | 3,708
Trademark and software copyright |  |
Asset Acquisition [Line Items] |  |
Total assets acquired |  | ¥ 98

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- Definition The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 805 -SubTopic 50 -Name Accounting Standards Codification -Section 25 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480060/805-50-25-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 805 -SubTopic 50 -Name Accounting Standards Codification -Section 30 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480027/805-50-30-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 805 -SubTopic 50 -Name Accounting Standards Codification -Section 30 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480027/805-50-30-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 45 -Paragraph 13 -Subparagraph (c) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-13 + Details
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