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CONVERTIBLE REDEEMABLE PREFERRED SHARES AND WARRANTS - Preferred Share Activities (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Increase (Decrease) in Temporary Equity |  |
Beginning balance | $ 154,449,407 | $ 154,201,294
Conversion of Preferred Shares to Ordinary Shares | (154,477,960) |
Ending balance |  | 154,449,407
Series A-1 convertible redeemable preferred shares |  |
Increase (Decrease) in Temporary Equity |  |
Beginning balance | 5,473,957 | 5,473,957
Conversion of Preferred Shares to Ordinary Shares | (5,473,957) |
Ending balance |  | 5,473,957
Series A-2 convertible redeemable preferred shares |  |
Increase (Decrease) in Temporary Equity |  |
Beginning balance | 3,000,000 | 3,000,000
Conversion of Preferred Shares to Ordinary Shares | (3,000,000) |
Ending balance |  | 3,000,000
Series B convertible redeemable preferred shares |  |
Increase (Decrease) in Temporary Equity |  |
Beginning balance | 27,999,995 | 27,999,995
Conversion of Preferred Shares to Ordinary Shares | (27,999,995) |
Ending balance |  | 27,999,995
Series C-1 convertible redeemable preferred shares |  |
Increase (Decrease) in Temporary Equity |  |
Beginning balance | 48,975,456 | 48,727,343
Accretion of Preferred Shares to redemption value | 28,553 | 248,113
Conversion of Preferred Shares to Ordinary Shares | (49,004,009) |
Ending balance |  | 48,975,456
Series C-2 convertible redeemable preferred shares |  |
Increase (Decrease) in Temporary Equity |  |
Beginning balance | 18,999,999 | 18,999,999
Conversion of Preferred Shares to Ordinary Shares | (18,999,999) |
Ending balance |  | 18,999,999
Series C-3 convertible redeemable preferred shares |  |
Increase (Decrease) in Temporary Equity |  |
Beginning balance | 50,000,000 | 50,000,000
Conversion of Preferred Shares to Ordinary Shares | $ (50,000,000) |
Ending balance |  | $ 50,000,000

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- Definition Carrying amount, attributable to parent, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(i)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442526-122756 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(5)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442526-122756 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iv)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442526-122756 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(5)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442552-122756 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(i)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442552-122756 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iv)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442552-122756 + Details
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