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SHARE-BASED COMPENSATION (Tables)

12 Months Ended

Dec. 31, 2021

SHARE-BASED COMPENSATION

Summary of the Group's nonvested restricted stock activity

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​	​	​	​	​
​	​	​	​	Weighted Average Grant
​	​	Number of Restricted	​	Date
​		Stocks		Fair Value
​	​		​	US$
Nonvested restricted stocks outstanding at January 1, 2021		70,954,080		1.18
Granted	​	2,163,420	​	4.20
Forfeited	​	(4,607,340)	​	1.64
Vested	​	(12,325,470)	​	1.58
Adjusted for performance conditions	​	(2,488,200)	​	0.61
Nonvested restricted stocks outstanding at December 31, 2021	​	53,696,490	​	1.20

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- Definition

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

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