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Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2021

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of Share Option Activity

The following table summarizes the share option activity for the year ended December 31, 2021:

Options Granted to Employees and Directors		Number of Options				Weighted- Average Exercise Price				Weighted- Average grant-date Fair Value per Option				Weighted Average Remaining Contractual Term (Years)				Aggregate Intrinsic Value
						RMB				RMB								RMB
Outstanding, December 31, 2020			7,200,816				8.48				17.03				7.27				232,933
Granted			1,367,791				7.26				24.61				—				—
Forfeited			652,406				11.77				21.07				—				—
Expired			—				—				—				—				—
Exercised			549,007				5.50				9.19				—				—
Cancelled			—				—				—				—				—
Outstanding, December 31, 2021			7,367,194				8.18				18.66				6.09				48,464
Vested and expected to vest at December 31, 2021			7,367,194				8.18				18.66				6.09				48,464
Vested at December 31, 2021			5,496,609				7.73				14.37				5.35				35,908

Schedule of Assumptions Used to Estimate Fair Values of Share Options Granted

The following table presents assumptions used to estimate the fair values of share options granted for the years ended December 31, 2019, 2020 and 2021:

		2019		2020		2021
Risk-free interest rate		1.65% - 2.54%		0.63% - 1.88%		0.94% - 1.70%
Dividend yield		0%		0%		0%
Expected volatility		44.23% - 44.71%		44.37% - 47.83%		47.45% - 56.62%
Weighted average expected volatility		44.53%		46.37%		50.26%
Expected exercise multiple		2.5		2.5 - 2.8		2.2 - 2.8

Summary of Restricted Share Units

A summary of the restricted share units for the year ended December 31, 2021 was stated below:

Restricted Share Units Granted to Employees and Directors		Number of Share Units				Weighted- Average Exercise Price				Weighted- Average grant-date Fair Value per Option				Weighted Average Remaining Contractual Term (Years)				Aggregate Intrinsic Value
						RMB				RMB								RMB
Outstanding, December 31, 2020			95,094				—				20.37				10.66				3,751
Granted			119,568				—				13.92				—				—
Forfeited			—				—				—				—				—
Expired			—				—				—				—				—
Exercised			95,096				—				19.09				—				—
Cancelled			—				—				—				—				—
Outstanding, December 31, 2021			119,566				—				14.94				9.88				1,189
Vested and expected to vest at December 31, 2021			119,566				—				14.94				9.88				1,189
Exercisable at December 31, 2021			—				—				—				—				—

Summary of Total Compensation Costs Recognized

Total compensation costs recognized for the years ended December 31, 2019, 2020 and 2021 were as follows:

		Year ended December 31,
		2019				2020				2021
		RMB				RMB				RMB				US$
Cost of Revenue			73				4				41				6
Research and development			12,819				7,176				13,801				2,166
Sales and marketing			6,040				3,965				2,609				409
General and administrative			28,352				17,713				13,761				2,160
Total			47,284				28,858				30,212				4,741

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Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

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Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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