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Related Party Balances and Transactions - Convertible notes issued to related parties and interest accrual (Details) - CNY (¥) ¥ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
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Related Party Balances and Transactions |  |  |
Convertible notes issued to related parties and interest accrual | ¥ 13,712 | ¥ 15,316 | ¥ 123,945
Huang River Investment Limited |  |  |
Related Party Balances and Transactions |  |  |
Convertible notes issued to related parties and interest accrual | ¥ 13,712 | ¥ 15,316 | 22,018
Serene View Investment Limited |  |  |
Related Party Balances and Transactions |  |  |
Convertible notes issued to related parties and interest accrual |  |  | ¥ 101,927

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- Definition The amount for notes payable (written promise to pay), due to related parties. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.17) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(k)(1)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
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