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Disclosure - INCOME TAXES (Details) link:presentationLink link:calculationLink link:definitionLink 41303 - Disclosure - INCOME TAXES - Additional details (Details) link:presentationLink link:calculationLink link:definitionLink 41601 - Disclosure - EQUITY - Ordinary shares (Details) link:presentationLink link:calculationLink link:definitionLink 41602 - Disclosure - EQUITY - Restricted net assets (Details) link:presentationLink link:calculationLink link:definitionLink 41701 - Disclosure - RELATED PARTY TRANSACTIONS AND BALANCES - Nature of relationships with related parties (Details) link:presentationLink link:calculationLink link:definitionLink 41702 - Disclosure - RELATED PARTY TRANSACTIONS AND BALANCES - Balances with related parties (Details) link:presentationLink link:calculationLink link:definitionLink 41801 - Disclosure - CONTINGENCIES (Details) link:presentationLink link:calculationLink link:definitionLink 41901 - Disclosure - SUBSEQUENT EVENTS (Details) link:presentationLink link:calculationLink link:definitionLink 00105 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 10101 - Disclosure - ORGANIZATION AND BUSINESS DESCRIPTION link:presentationLink link:calculationLink link:definitionLink 10201 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 10301 - Disclosure - GOING CONCERN link:presentationLink link:calculationLink link:definitionLink 10401 - Disclosure - ACCOUNTS RECEIVABLE, NET link:presentationLink link:calculationLink link:definitionLink 10501 - Disclosure - OTHER CURRENT ASSETS link:presentationLink link:calculationLink link:definitionLink 10601 - Disclosure - LOAN RECEIVABLE link:presentationLink link:calculationLink link:definitionLink 10701 - Disclosure - PROPERTY AND EQUIPMENT, NET link:presentationLink link:calculationLink link:definitionLink 10801 - Disclosure - OPERATING LEASE link:presentationLink link:calculationLink link:definitionLink 10901 - Disclosure - LONG-TERM INVESTMENTS link:presentationLink link:calculationLink link:definitionLink 11001 - Disclosure - BANK BORROWINGS link:presentationLink link:calculationLink link:definitionLink 11101 - Disclosure - ACCRUED EXPENSES AND OTHER LIABILITIES link:presentationLink link:calculationLink link:definitionLink 11201 - Disclosure - WARRANT LIABILITIES link:presentationLink link:calculationLink link:definitionLink 11301 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 11401 - Disclosure - LOSS PER SHARE link:presentationLink link:calculationLink link:definitionLink 11501 - Disclosure - SHARE-BASED COMPENSATION link:presentationLink link:calculationLink link:definitionLink 11601 - Disclosure - EQUITY link:presentationLink link:calculationLink link:definitionLink 11701 - Disclosure - RELATED PARTY TRANSACTIONS AND BALANCES link:presentationLink link:calculationLink link:definitionLink 11801 - Disclosure - CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 11901 - Disclosure - SUBSEQUENT EVENTS link:presentationLink link:calculationLink link:definitionLink 20202 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 30103 - Disclosure - ORGANIZATION AND BUSINESS DESCRIPTION (Tables) link:presentationLink link:calculationLink link:definitionLink 30203 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) link:presentationLink link:calculationLink link:definitionLink 30403 - Disclosure - ACCOUNTS RECEIVABLE, NET (Tables) link:presentationLink link:calculationLink link:definitionLink 30503 - Disclosure - OTHER CURRENT ASSETS (Tables) link:presentationLink link:calculationLink link:definitionLink 30603 - Disclosure - LOAN RECEIVABLE (Tables) link:presentationLink link:calculationLink link:definitionLink 30703 - Disclosure - PROPERTY AND EQUIPMENT, NET (Tables) link:presentationLink link:calculationLink link:definitionLink 30903 - Disclosure - LONG-TERM INVESTMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 31003 - 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Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Segment reporting (Details) link:presentationLink link:calculationLink link:definitionLink 40502 - Disclosure - OTHER CURRENT ASSETS - Movement of allowance for doubtful accounts (Details) link:presentationLink link:calculationLink link:definitionLink 40601 - Disclosure - LOAN RECEIVABLE (Details) link:presentationLink link:calculationLink link:definitionLink 40801 - Disclosure - OPERATING LEASE (Details) link:presentationLink link:calculationLink link:definitionLink 41401 - Disclosure - LOSS PER SHARE - Computation of basic and diluted loss per common share (Details) link:presentationLink link:calculationLink link:definitionLink 41501 - Disclosure - SHARE-BASED COMPENSATION (Details) link:presentationLink link:calculationLink link:definitionLink