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Income Tax Expenses - Per Share Effect of Tax Holidays (Details) - ¥ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Net income per share effect – basic	¥ 0.02	¥ 0.14	¥ 0.13
Net income per share effect – diluted	¥ 0.02	¥ 0.13	¥ 0.13

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Income tax holiday income tax benefits per share basic.

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- Definition

Income tax holiday income tax benefits per share diluted.

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