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Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2023

Share-Based Payment Arrangement [Abstract]

Schedule of assumptions used to estimate the fair values of the share options granted

​

​	​	​	​	​	​	​	​
​	​	For the year ended December 31,
​		2021		2022		2023
Expected volatility	​	48.00% - 74.00	%	74.00% – 80.00	%	82.00% - 85.00	%
Risk-free interest rate (per annum)	​	0.97% - 1.55	%	1.94% – 3.83	%	3.57% - 4.47	%
Expected dividend yield	​	0.00	%	0.00	%	0.00	%
Employee forfeiture rate (per annum)	​	3.80	%	3.80% – 3.92	%	2.40% - 7.50	%
Exercise multiples	​	2.50	​	2.50	​	2.50	​
Expected term	​	7.00	​	7.00	​	7.00	​
Fair value of underlying ordinary share (per share)	​	US$14.10 - 18.42	​	US$18.11 – 19.91	​	US$7.95 - 15.47	​
Fair value of awards on valuation date	​	US$5.84 - 19.90	​	US$12.93 – 17.11	​	US$5.38 - 10.51	​

Schedule of stock option activity

​

​	​	​	​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​	Weighted	​	​
​	​	​	​	Weighted	​	Weighted	​	average	​	​
​	​	Number	​	average	​	average	​	remaining	​	Aggregate
​	​	of	​	exercise	​	grant date	​	contract	​	intrinsic
​	​	options	​	price	​	fair value	​	life	​	value
​		​		RMB		RMB		Years		RMB
Outstanding at December 31, 2022	​	9,608,634	​	12.51	​	65.93	​	5.46	​	1,141,255
Granted	​	2,422,714	​	14.49	​	55.08	​	—	​	—
Forfeited	​	506,540	​	44.32	​	—	​	—	​	—
Exercised	​	1,333,087	​	16.59	​	—	​	—	​	74,380
Outstanding at December 31, 2023		10,191,721		16.07		62.08		4.97		517,605
Vested and expected to vest as of December 31, 2023		10,191,721		16.07		62.08		4.97		517,605
Exercisable as of December 31, 2023		5,335,293		15.74		50.36		4.34		287,997

Schedule of RSUs classified as equity

​

​	​	​	​	​
​		​		Weighted
​	​	Numbers of	​	average grant
​	​	RSUs	​	date fair value
​	​	​	​	RMB
Outstanding at January 1, 2023	​	—	​	—
Granted		189,012		76.52
Forfeited		—
Exercised		35,691
Outstanding at December 31, 2023		153,321		76.06
Vested and expected to vest as of December 31, 2023		153,321		76.06
Exercisable as of December 31, 2023		—		—

Schedule of share-based compensation for all employee share options, restricted share units and tandem award

​

​	​	​	​	​	​	​
​		For the Year ended December 31,
​		2021		2022		2023
​	​	RMB	​	RMB	​	RMB
Cost of revenues		1,813		8,037		16,245
Sales and marketing expenses		1,488		6,291		20,682
General and administrative expenses		38,892		48,998		63,326
Research and development expenses		12,090		41,893		134,371
Total		54,283		105,219		234,624

​

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Tabular disclosure of the changes in outstanding nonvested restricted stock shares.

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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 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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