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Long-term investments (Tables)

12 Months Ended

Dec. 31, 2023

Long-Term Investments [Abstract]

Schedule of long-term investments

			As of December 31,
			2022						2023
			RMB						RMB
Equity method investments			284,536						252,407
Equity securities			69,319						48,580
Total long-term investments			353,855						300,987

Schedule of combined financial information for investee companies

			Year ended December 31,
			2022
			RMB
Fair value of the consideration received			—
Add: Fair value of retained equity interest in Suzhou Photon-Matrix			64,000
Add: Carrying amount of redeemable noncontrolling interest			40,750
Less: Carrying amount of non-redeemable noncontrolling interest			(7,178)
Less: Carrying amount of Suzhou Photon-Matrix’s net assets			(25,598)
Gains on deconsolidation of Suzhou Photon-Matrix			71,974

Summary of combined financial position for the investee companies as of December 31, 2022 and 2023 and the results of the operation for the years ended December 31, 2021, 2022 and 2023 is as follows:

			As of December 31,
			2022						2023
			RMB						RMB
Financial position:
Current assets			1,216,042						878,519
Non-current assets			999,573						1,093,602
Total assets			2,215,615						1,972,121
Current liabilities			942,899						1,043,703
Non-current liabilities			1,056,274						1,146,673
Total liabilities			1,999,173						2,190,376
Shareholders’ equity (deficit)			216,442						(218,255)
Total liabilities and shareholders’ equity (deficit)			2,215,615						1,972,121

			Year ended December 31,
			2021			2022						2023
			RMB			RMB						RMB
Results of operations:
Total revenues			711,800			1,134,152						1,290,126
Loss from operation			(482,095)			(636,240)						(795,354)
Net loss			(392,337)			(641,401)						(839,052)

X

- Definition

Tabular disclosure of equity method investments including, but not limited to, name of each investee or group of investments, percentage ownership, difference between recorded amount of an investment and the value of the underlying equity in the net assets, and summarized financial information.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

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- Definition

Tabular disclosure of investment.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//320/tableOfContent

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Topic 321
-Publisher FASB
-URI https://asc.fasb.org//321/tableOfContent

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Topic 325
-Publisher FASB
-URI https://asc.fasb.org//325/tableOfContent

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- References

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