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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 808
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479402/808-10-50-1

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(a)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

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- Definition

Amount of cash inflow (outflow) from financing activity, classified as other.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-14

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 15
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-15

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Balance Type:	debit
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- Definition

Amount of cash outflow for short-term and long-term debt. Excludes payment of lease obligation.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 15
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-15

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Balance Type:	credit
Period Type:	duration

- Definition

The amount of liability under reverse factoring program.

+ References

No definition available.

+ Details

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- Definition

Maximum principal payment of financing under the reverse factoring arrangement agreement.

+ References

No definition available.

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- Definition

Period agreed for structured payments under reverse factoring arrangement.

+ References

No definition available.

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SUMMARY OF PRINCIPAL ACCOUNTING POLICIES - Structured payment arrangement - Reverse factoring arrangements (Details) ¥ in Thousands, $ in Thousands	1 Months Ended		12 Months Ended
	Oct. 31, 2025 CNY (¥)	Sep. 30, 2025 CNY (¥)	Dec. 31, 2025 CNY (¥)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 CNY (¥)	Dec. 31, 2023 CNY (¥)	Dec. 31, 2022	Dec. 31, 2021
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Annual interest rate			4.35%	4.35%
Reverse factoring arrangement, term	11 months	9 months
Reverse factoring arrangement, maximum principal amount	¥ 30,000	¥ 90,000
The outstanding confirmed amount at the beginning of the year			¥ 0
The amount of obligation confirmed during the year			53,463	$ 7,645	¥ 710,954	¥ 1,451,352
The outstanding confirmed amount at the end of the year			19,800		0
Factoring program
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Annual interest rate						10.50%	9.00%	8.50%
The outstanding confirmed amount at the beginning of the year					98,109
The amount of obligation confirmed during the year			19,800		147,857
The amount of obligation paid during the year					¥ (245,966)
The outstanding confirmed amount at the end of the year			¥ 19,800			¥ 98,109