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Share-based Compensation - Summary of Stock Option Awards Outstanding (Details) ¥ in Thousands, shares in Thousands	12 Months Ended
	Dec. 31, 2021 $ / shares shares	Dec. 31, 2021 CNY (¥) shares	Dec. 31, 2020 $ / shares shares	Dec. 31, 2020 CNY (¥) shares	Dec. 31, 2019 $ / shares	Dec. 31, 2019 CNY (¥) shares	Dec. 31, 2018 CNY (¥) shares
Number of Options - Beginning balance		38,667		12,321		13,165
Number of Options - Granted		32,389		33,295
Number of Options - Forfeited		(15,571)		(3,714)		(844)
Number of Options - Exercised		(4,925)		(3,235)
Number of Options - Ending balance		50,560		38,667		12,321	13,165
Number of Options - Exercisable	8,557	8,557	5,252	5,252
Weighted average exercise price, Beginning balance | $ / shares	$ 0.0001		$ 0.0001		$ 0.0001
Weighted average exercise price, Granted | $ / shares	0.0001		0.0001
Weighted average exercise price, Forfeited | $ / shares	0.0001		0.0001		0.0001
Weighted average exercise price, Ending balance | $ / shares	0.0001		0.0001		$ 0.0001
Options, Exercisable, Weighted Average Exercise Price | $ / shares	$ 0.0001		$ 0.0001
Options, Outstanding, Weighted Average Remaining Contractual Term		2 years 6 months 21 days		3 years 1 month 2 days		2 years 9 months	3 years 9 months
Aggregated intrinsic value, Beginning balance | ¥		¥ 48,921		¥ 43,011		¥ 20,514
Aggregated intrinsic value, Ending balance | ¥		29,786		48,921		¥ 43,011	¥ 20,514
Aggregated intrinsic value, Option exercisable | ¥		¥ 5,041		¥ 6,644
Employee [Member]
Number of Options - Beginning balance		37,804		11,821		12,665
Number of Options - Granted		32,389		32,932
Number of Options - Forfeited		(15,571)		(3,714)		(844)
Number of Options - Exercised		(4,925)		(3,235)
Number of Options - Ending balance		49,697		37,804		11,821	12,665
Number of Options - Exercisable	8,216	8,216	5,002	5,002
Consultants [Member]
Number of Options - Beginning balance		863		500		500
Number of Options - Granted				363
Number of Options - Ending balance		863		863		500	500
Number of Options - Exercisable	341	341	250	250

X

- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of share options (or share units) exercised during the current period.

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