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Property and equipment, net - Depreciation expenses on property and equipment allocated to expense items (Details) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Property and equipment, net
Total depreciation	¥ 45,087	¥ 43,137	¥ 38,480
Cost of revenues
Property and equipment, net
Total depreciation	1,022	1,401	1,684
Selling and marketing expenses
Property and equipment, net
Total depreciation	727	290	355
General and administrative expenses
Property and equipment, net
Total depreciation	27,433	26,530	23,148
Research and development expenses
Property and equipment, net
Total depreciation	¥ 15,905	¥ 14,916	¥ 13,293

X

- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

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X

- 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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