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SHARE-BASED PAYMENTS, fair value of options (Details)	12 Months Ended
	Dec. 31, 2022 $ / shares
The assumptions used to estimate the fair value of the options granted
Fair value per ordinary share as at valuation date	$ 0.41
Risk-free rate	3.44%
Expected volatility	71.71%
Minimum
The assumptions used to estimate the fair value of the options granted
Exercise multiple	2.2
Maximum
The assumptions used to estimate the fair value of the options granted
Exercise multiple	2.8

X

- Definition

The multiple of the share-based payment arrangement's exercise price that could trigger the holder of the award to exercise.

+ References

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- Definition

Agreed-upon share price for the exchange of the underlying asset relating to the share-based payment award.

+ References

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iv)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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