Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(2))
-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-12

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 6.I.Fact.4)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479360/740-10-S99-1

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Amount of undistributed earnings of domestic subsidiaries or domestic joint ventures intended to be permanent.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 25
-Paragraph 3
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482620/740-10-25-3

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
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Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15A
-Subparagraph (a)
-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 10B
-Publisher FASB
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- Definition

Foreign income tax expense (benefit), continuing operations, percentage.

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Income tax disclosure.

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- Definition

Minimum required investment percentage to consider five percentage withholding tax rate.

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- Definition

Additional tax deduction for research and development activities.

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- Definition

Withholding tax percentage on dividend distributed by foreign investment enterprises.

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Income Tax Expenses - Additional Information (Details) - CNY (¥)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Line Items]
Tax rate on taxable income	16.50%
Uniform income tax rate	25.00%	25.00%	25.00%	25.00%
Withholding tax percentage on dividend distributed by foreign investment enterprises	10.00%
Undistributed earnings and reserves available for distribution	¥ 72,603,000	¥ 65,976,000
Unrecognized uncertain tax positions	¥ 0	¥ 0
Hong Kong Tax Rate for Profits at 2 Million
Income Tax Disclosure [Line Items]
Tax rate on taxable income	8.25%
Hong Kong Tax Rate for Profits over 2 Million
Income Tax Disclosure [Line Items]
Tax rate on taxable income	16.50%
EIT Law \| Maximum
Income Tax Disclosure [Line Items]
Percentage of additional tax deduction for research and development activities	100.00%
EIT Law \| Minimum
Income Tax Disclosure [Line Items]
Percentage of additional tax deduction for research and development activities	75.00%
China and Hong Kong Special Administrative Region
Income Tax Disclosure [Line Items]
Minimum required investment percentage to consider 5% withholding tax rate	25.00%
China and Hong Kong Special Administrative Region \| Maximum
Income Tax Disclosure [Line Items]
Withholding tax percentage on dividend distributed by foreign investment enterprises	5.00%