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SHARE-BASED AWARDS (Narrative) (Details) $ / shares in Units, ¥ in Thousands		12 Months Ended
	Feb. 18, 2014 $ / shares shares	Dec. 31, 2022 CNY (¥) shares	Dec. 31, 2021 shares	Dec. 31, 2020 shares	Dec. 31, 2022 USD ($) shares
SHARE-BASED AWARDS
Ordinary shares that may be issued		13,218,000			13,218,000
Options granted	3,479,604
Options granted, exercise price | $ / shares	$ 2.04
Unrecognized share-based compensation cost | ¥		¥ 0
Shares exercised		0	0	0
Restricted shares [Member]
SHARE-BASED AWARDS
Unrecognized share-based compensation cost | $					$ 0
Shares vesting description		The Restricted Shares have a service condition where the grantees can remove restriction on 25% of total number of restricted shares on annual basis over a four-year period ending the fourth anniversary of the grant date.

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- Definition

The number of exercised made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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Description of service or performance condition required to be met for earning right to award under share-based payment arrangement. Includes, but is not limited to, combination of market, performance or service condition.

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