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Investment in equity method investee	12 Months Ended
	Dec. 31, 2024
Investment in equity method investee
Investment in equity method investee	7. Investment in equity method investee The Company subscribed for 3.02% to 99.99% of the registered capital of four limited partnerships and one limited company for RMB 89 million and RMB 103 million (US$ 14 million) as of December 31, 2023 and 2024. The carrying amounts of all investments in equity method invested were RMB 137 million and RMB 146 million (US$ 20 million) as of December 31, 2023 and 2024, respectively.

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- References

No definition available.

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- Definition

The entire disclosure for equity method investments and joint ventures. Equity method investments are investments that give the investor the ability to exercise significant influence over the operating and financial policies of an investee. Joint ventures are entities owned and operated by a small group of businesses as a separate and specific business or project for the mutual benefit of the members of the group.

+ References

Reference 1: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Topic 740
-SubTopic 323
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478156/740-323-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Topic 323
-Publisher FASB
-URI https://asc.fasb.org/323/tableOfContent

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