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Principal Accounting Policies - Property, equipment and software (Details)	Dec. 31, 2023
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	us-gaap:UsefulLifeTermOfLeaseMember
Furniture, fixtures, office and other equipment | Equal to or more than
Property, Equipment and Software
Estimated useful lives of assets	3 years
Furniture, fixtures, office and other equipment | 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 | Equal to or more than
Property, Equipment and Software
Estimated useful lives of assets	3 years
Servers and computers | Less than
Property, Equipment and Software
Estimated useful lives of assets	5 years
Software
Property, Equipment and Software
Estimated useful lives of assets	3 years

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+ References

No definition available.

+ Details

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- Definition

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+ References

No definition available.

+ Details

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- Definition

Indicates description of term of useful life for property, plant, and equipment when not stated as numeric value.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 35
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482190/360-10-35-3

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