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Principal Accounting Policies - Property, equipment and software (Details)	Dec. 31, 2024
Building | Equal to or more than
Property, Equipment and Software
Estimated useful lives of assets	20 years
Building | Less than
Property, Equipment and Software
Estimated useful lives of assets	30 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:UsefulLifeShorterOfTermOfLeaseOrAssetUtilityMember
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	20 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

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 7A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-7A

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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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X

- 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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