00000001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 00000002 - Statement - Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 00000003 - Statement - Consolidated Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 00000004 - Statement - Consolidated Statements of Operations and Comprehensive Income link:presentationLink link:calculationLink link:definitionLink 00000005 - Statement - Consolidated Statements of Changes in Shareholders' Equity link:presentationLink link:calculationLink link:definitionLink 00000006 - Statement - Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 999014 - Disclosure - Organization and business overview link:presentationLink link:calculationLink link:definitionLink 999015 - Disclosure - Summary of significant accounting policies link:presentationLink link:calculationLink link:definitionLink 999016 - Disclosure - Restatement of consolidated financial statements link:presentationLink link:calculationLink link:definitionLink 999017 - Disclosure - Cash and cash equivalents link:presentationLink link:calculationLink link:definitionLink 999018 - Disclosure - Accounts receivable, net link:presentationLink link:calculationLink link:definitionLink 999019 - Disclosure - Other current assets link:presentationLink link:calculationLink link:definitionLink 999020 - Disclosure - Right-of-use assets and operating lease liabilities link:presentationLink link:calculationLink link:definitionLink 999021 - Disclosure - Deposits link:presentationLink link:calculationLink link:definitionLink 999022 - Disclosure - Accruals and other current liabilities link:presentationLink link:calculationLink link:definitionLink 999023 - Disclosure - Equity link:presentationLink link:calculationLink link:definitionLink 999024 - Disclosure - Related party transactions and balances link:presentationLink link:calculationLink link:definitionLink 999025 - Disclosure - Income taxes link:presentationLink link:calculationLink link:definitionLink 999026 - Disclosure - Other income (loss), net link:presentationLink link:calculationLink link:definitionLink 999027 - Disclosure - Revenue link:presentationLink link:calculationLink link:definitionLink 999028 - Disclosure - Commitment and Contingencies link:presentationLink link:calculationLink link:definitionLink 999029 - Disclosure - Subsequent events link:presentationLink link:calculationLink link:definitionLink 999030 - Disclosure - Summary of significant accounting policies (Policies) link:presentationLink link:calculationLink link:definitionLink 999031 - Disclosure - Organization and business overview (Tables) link:presentationLink link:calculationLink link:definitionLink 999032 - Disclosure - Summary of significant accounting policies (Tables) link:presentationLink link:calculationLink link:definitionLink 999033 - Disclosure - Restatement of consolidated financial statements (Tables) link:presentationLink link:calculationLink link:definitionLink 999034 - Disclosure - Cash and cash equivalents (Tables) link:presentationLink link:calculationLink link:definitionLink 999035 - Disclosure - Accounts receivable, net (Tables) link:presentationLink link:calculationLink link:definitionLink 999036 - Disclosure - Other current assets (Tables) link:presentationLink link:calculationLink link:definitionLink 999037 - Disclosure - Right-of-use assets and operating lease liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink 999038 - Disclosure - Deposits (Tables) link:presentationLink link:calculationLink link:definitionLink 999039 - Disclosure - Accruals and other current liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink 999040 - Disclosure - Related party transactions and balances (Tables) link:presentationLink link:calculationLink link:definitionLink 999041 - Disclosure - Income taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 999042 - Disclosure - Other income (loss), net (Tables) link:presentationLink link:calculationLink link:definitionLink 999043 - Disclosure - Revenue (Tables) link:presentationLink link:calculationLink link:definitionLink 999044 - Disclosure - Organization and business overview (Details Narrative) link:presentationLink link:calculationLink link:definitionLink 999045 - Disclosure - Schedule of consolidated financial statements (Details) link:presentationLink link:calculationLink link:definitionLink 999046 - Disclosure - Schedule of property and equipment estimated useful lives (Details) link:presentationLink link:calculationLink link:definitionLink 999047 - Disclosure - Schedules of customer concentration risk (Details) link:presentationLink link:calculationLink link:definitionLink 999048 - Disclosure - Summary of significant accounting policies (Details Narrative) link:presentationLink link:calculationLink link:definitionLink 999049 - Disclosure - Restated Consolidated Statement of Cash Flow (Details) link:presentationLink link:calculationLink link:definitionLink 999050 - Disclosure - Schedule of cash and cash equivalents (Details) link:presentationLink link:calculationLink link:definitionLink 999051 - Disclosure - Schedule of accounts receivable, net (Details) link:presentationLink link:calculationLink link:definitionLink 999052 - Disclosure - Accounts receivable, net (Details Narrative) link:presentationLink link:calculationLink link:definitionLink 999053 - Disclosure - Schedule of other current assets (Details) link:presentationLink link:calculationLink link:definitionLink 999054 - Disclosure - Right-of-use assets and operating lease liabilities (Details Narrative) link:presentationLink link:calculationLink link:definitionLink 999055 - Disclosure - Schedule of non-cancellable lease contract (Details) link:presentationLink link:calculationLink link:definitionLink 999056 - Disclosure - Schedule of operating lease consolidated balance sheets (Details) link:presentationLink link:calculationLink link:definitionLink 999057 - Disclosure - Schedule of operating lease activities (Details) link:presentationLink link:calculationLink link:definitionLink 999058 - Disclosure - Schedule of cash flow information related to leases (Details) link:presentationLink link:calculationLink link:definitionLink 999059 - Disclosure - Schedule of future minimum lease payments (Details) link:presentationLink link:calculationLink link:definitionLink 999060 - Disclosure - Schedule of lease supplemental information (Details) link:presentationLink link:calculationLink link:definitionLink 999061 - Disclosure - Schedule of deposits (Details) link:presentationLink link:calculationLink link:definitionLink 999062 - Disclosure - Deposits (Details Narrative) link:presentationLink link:calculationLink link:definitionLink 999063 - Disclosure - Schedule of accruals and other current liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 999064 - Disclosure - Equity (Details Narrative) link:presentationLink link:calculationLink link:definitionLink 999065 - Disclosure - Schedule of related parties and relationships with the Company (Details) link:presentationLink link:calculationLink link:definitionLink 999066 - Disclosure - Related party transactions and balances (Details Narrative) link:presentationLink link:calculationLink link:definitionLink 999067 - Disclosure - Schedule of components of the provision for income taxes (Details) link:presentationLink link:calculationLink link:definitionLink 999068 - Disclosure - Schedule of reconciliation of the statutory tax rate to the effective tax rate (Details) link:presentationLink link:calculationLink link:definitionLink 999069 - Disclosure - Schedule of expenses not deductible tax (Details) link:presentationLink link:calculationLink link:definitionLink 999070 - Disclosure - Schedule of components of deferred tax assets (Details) link:presentationLink link:calculationLink link:definitionLink 999071 - Disclosure - Income taxes (Details Narrative) link:presentationLink link:calculationLink link:definitionLink 999072 - Disclosure - Schedule of other income (loss), net (Details) link:presentationLink link:calculationLink link:definitionLink 999073 - Disclosure - Summary of total revenues by type of services (Details) link:presentationLink link:calculationLink link:definitionLink 999074 - Disclosure - Commitment and Contingencies (Details Narrative) link:presentationLink link:calculationLink link:definitionLink