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Principal Accounting Policies (Details 5)	12 Months Ended
	Dec. 31, 2021
Building
Property, Equipment and Software
Estimated useful lives of assets	20 years
Decoration
Property, Equipment and Software
Estimated useful lives of assets	5 years
Leasehold improvements
Property, Equipment and Software
Estimated useful lives of assets	lesser of the term of the lease and the estimated useful lives of the assets
Furniture, fixtures, office and other equipments | Equal to or more than
Property, Equipment and Software
Estimated useful lives of assets	3 years
Furniture, fixtures, office and other equipments | Less than
Property, Equipment and Software
Estimated useful lives of assets	10 years
Vehicles
Property, Equipment and Software
Estimated useful lives of assets	5 years
Servers and computers
Property, Equipment and Software
Estimated useful lives of assets	3 years
Software
Property, Equipment and Software
Estimated useful lives of assets	3 years

X

- Definition

Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 35
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=123364984&loc=d3e1205-110223

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- Definition

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+ References

No definition available.

+ Details

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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