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Movement of Meritz put option (Details) link:presentationLink link:calculationLink link:definitionLink 99941401 - Disclosure - EXCHANGEABLE NOTES (Details) link:presentationLink link:calculationLink link:definitionLink 99941402 - Disclosure - EXCHANGEABLE NOTES - Additional information (Details) link:presentationLink link:calculationLink link:definitionLink 99941403 - Disclosure - EXCHANGEABLE NOTES - Assumptions used in determining fair values of Exchangeable Notes (Details) link:presentationLink link:calculationLink link:definitionLink 99941501 - Disclosure - CONVERTIBLE NOTES (Details) link:presentationLink link:calculationLink link:definitionLink 99941502 - Disclosure - CONVERTIBLE NOTES - Subsidiary Convertible Note (Details) link:presentationLink link:calculationLink link:definitionLink 99941503 - Disclosure - CONVERTIBLE NOTES - Key assumptions used in determining fair value of Subsidiary Convertible Note (Details) link:presentationLink link:calculationLink link:definitionLink 99941504 - Disclosure - CONVERTIBLE NOTES - 2023 and 2024 Convertible Notes (Details) link:presentationLink link:calculationLink link:definitionLink 99941505 - Disclosure - CONVERTIBLE NOTES - 2025 Convertible Notes (Details) link:presentationLink link:calculationLink link:definitionLink 99941506 - Disclosure - CONVERTIBLE NOTES - Key assumptions used in determining fair value of 2025 Convertible Note (Details) link:presentationLink link:calculationLink link:definitionLink 99941507 - Disclosure - CONVERTIBLE NOTES - ATW Convertible Note (Details) link:presentationLink link:calculationLink link:definitionLink 99941508 - Disclosure - CONVERTIBLE NOTES - Key assumptions used in determining fair value of ATW Convertible Note (Details) link:presentationLink link:calculationLink link:definitionLink 99941601 - Disclosure - DEFERRED INCOME (Details) link:presentationLink link:calculationLink link:definitionLink 99941701 - Disclosure - REDEEMABLE CONVERTIBLE PREFERRED SHARES - Activities (Details) link:presentationLink link:calculationLink link:definitionLink 99941702 - 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Disclosure - PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION - Parent Company Condensed Balance Sheets (Details) link:presentationLink link:calculationLink link:definitionLink 99942902 - Disclosure - PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION - Parent Company Condensed Statements of Comprehensive Loss (Details) link:presentationLink link:calculationLink link:definitionLink 99942903 - Disclosure - PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION - Parent Company Condensed Statements of Comprehensive Loss (Details) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 99942904 - Disclosure - PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION - Parent Company Condensed Statements of Cash Flows (Details) link:presentationLink link:calculationLink link:definitionLink 995210101 - Disclosure - DESCRIPTION OF BUSINESS AND ORGANIZATION link:presentationLink link:calculationLink link:definitionLink 995210201 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 995210301 - 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