00100 - Statement - CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 00200 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS link:presentationLink link:calculationLink link:definitionLink 00205 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 00400 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 40301 - Disclosure - Certain risks and concentration - Schedule of Financial Data for VIEs on Aggregated Basis Balance Sheet (Details) link:presentationLink link:calculationLink link:definitionLink 40304 - Disclosure - Certain risks and concentration - Fair value measurements (Details) link:presentationLink link:calculationLink link:definitionLink 40401 - Disclosure - Acquisitions - Optimal - Identifiable assets acquired and liabilities assumed (Details) link:presentationLink link:calculationLink link:definitionLink 40402 - Disclosure - Acquisitions - CMRS Group - Identifiable assets acquired and liabilities assumed (Details) link:presentationLink link:calculationLink link:definitionLink 40901 - Disclosure - Accounts receivables, net (Details) link:presentationLink link:calculationLink link:definitionLink 41001 - Disclosure - Other assets (Details) link:presentationLink link:calculationLink link:definitionLink 41101 - Disclosure - Property and equipment, net (Details) link:presentationLink link:calculationLink link:definitionLink 41203 - Disclosure - Intangible assets, net - Estimated amortization expense (Details) link:presentationLink link:calculationLink link:definitionLink 41402 - Disclosure - Lease accounting - Schedule of maturity of operating lease liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 41402 - Disclosure - Lease accounting - Schedule of maturity of operating lease liabilities (Details) (Calc 2) link:presentationLink link:calculationLink link:definitionLink 41403 - Disclosure - Lease accounting - Summary of lease cost (Details) link:presentationLink link:calculationLink link:definitionLink 41601 - Disclosure - Accrued liabilities and other liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 42201 - Disclosure - Other gains/(losses), net (Details) link:presentationLink link:calculationLink link:definitionLink 42302 - Disclosure - Income tax - Current and deferred portions of income tax expense (Details) link:presentationLink link:calculationLink link:definitionLink 42303 - Disclosure - Income tax - Deferred tax asset and deferred tax liability balances (Details) link:presentationLink link:calculationLink link:definitionLink 42306 - Disclosure - Income tax - Reconciliation between expense of income taxes (Details) link:presentationLink link:calculationLink link:definitionLink 43003 - Disclosure - ADDITIONAL INFORMATION: CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY - CONDENSED STATEMENTS OF COMPREHENSIVE LOSS (Details) link:presentationLink link:calculationLink link:definitionLink 43004 - Disclosure - ADDITIONAL INFORMATION: CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY - CONDENSED STATEMENTS OF CASH FLOWS (Details) link:presentationLink link:calculationLink link:definitionLink 00090 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 00105 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 00300 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 30403 - Disclosure - Acquisitions (Tables) link:presentationLink link:calculationLink link:definitionLink 40101 - Disclosure - Organization and principal activities - Subsidiaries and Consolidated VIE's (Details) link:presentationLink link:calculationLink link:definitionLink 40102 - Disclosure - Organization and principal activities - Subsidiaries and Consolidated VIE's (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 40103 - Disclosure - Organization and principal activities - OptAim (Details) link:presentationLink link:calculationLink link:definitionLink 40104 - Disclosure - Organization and principal activities - Share Offerings (Details) link:presentationLink link:calculationLink link:definitionLink 40105 - Disclosure - Organization and principal activities - Baozun Inc (Details) link:presentationLink link:calculationLink link:definitionLink 40202 - Disclosure - Principal accounting policies - Current expected credit losses upon adoption of ASC 326 (Details) link:presentationLink link:calculationLink link:definitionLink 40203 - Disclosure - Principal accounting policies - Schedule of movement in allowance for credit losses (Details) link:presentationLink link:calculationLink link:definitionLink 40204 - Disclosure - Principal accounting policies - Short-term investments (Details) link:presentationLink link:calculationLink link:definitionLink 40207 - Disclosure - Principal accounting policies - Property and equipment, net (Details) link:presentationLink link:calculationLink link:definitionLink 40208 - Disclosure - Principal accounting policies - Intangible assets, net (Details) link:presentationLink link:calculationLink link:definitionLink 40209 - Disclosure - Principal accounting policies - Impairment of Goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 40211 - Disclosure - Principal accounting policies - Revenue recognition and cost of revenues - Disaggregation by pricing models (Details) link:presentationLink link:calculationLink link:definitionLink 40213 - Disclosure - Principal accounting policies - Revenue recognition and cost of revenues - SaaS products and services (Details) link:presentationLink link:calculationLink link:definitionLink 40222 - Disclosure - Principal accounting policies - Impairment of long lived assets (Details) link:presentationLink link:calculationLink link:definitionLink 40302 - Disclosure - Certain risks and concentration - Schedule of Financial Data for VIEs on Aggregated Basis Statement of Loss and Cash Flows (Details) link:presentationLink link:calculationLink link:definitionLink 40305 - Disclosure - Certain risks and concentration - Summary of Changes in Level 3 Financial Liabilities for Convertible Notes and Derivative Liability (Details) link:presentationLink link:calculationLink link:definitionLink 40306 - Disclosure - Certain risks and concentration - Summary of Changes in Level 3 Financial Assets for Debt Investment-Convertible Note (Details) link:presentationLink link:calculationLink link:definitionLink 40307 - Disclosure - Certain risks and concentration - Concentration risk (Details) link:presentationLink link:calculationLink link:definitionLink 40308 - Disclosure - Certain risks and concentration - Fair value measurement - Equity securities without readily determinable fair value (Details) link:presentationLink link:calculationLink link:definitionLink 40309 - Disclosure - Certain risks and concentration - Summary of Changes In Financial Asset Measured Using Level 3 Input on a Non-recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 40403 - Disclosure - Acquisitions - CMRS Group - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 40404 - Disclosure - Acquisitions - Sky Gem International Limited - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 40405 - Disclosure - Acquisitions - Sky Gem International Limited - Identifiable assets acquired and liabilities assumed (Details) link:presentationLink link:calculationLink link:definitionLink 40406 - Disclosure - Acquisitions - Parllay - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 40407 - Disclosure - Acquisitions - Parllay - Identifiable assets acquired and liabilities assumed (Details) link:presentationLink link:calculationLink link:definitionLink 40408 - Disclosure - Acquisitions - Parllay - Schedule of estimated amounts recognized on acquired identifiable intangible asset and its estimated useful life (Details) link:presentationLink link:calculationLink link:definitionLink 40502 - Disclosure - Cash and cash equivalents and time deposits - Cash on hand and cash held at bank (Details) link:presentationLink link:calculationLink link:definitionLink 40601 - Disclosure - Restricted cash - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 40701 - Disclosure - Equity investment - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 40902 - Disclosure - Accounts receivables, net - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 41002 - Disclosure - Other assets - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 41102 - Disclosure - Property and equipment, net - Depreciation expense (Details) link:presentationLink link:calculationLink link:definitionLink 41201 - Disclosure - Intangible assets, net (Details) link:presentationLink link:calculationLink link:definitionLink 41202 - Disclosure - Intangible assets, net - Amortization expense (Details) link:presentationLink link:calculationLink link:definitionLink 41301 - Disclosure - Goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 41401 - Disclosure - Lease accounting - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 41701 - Disclosure - Bank borrowings (Details) link:presentationLink link:calculationLink link:definitionLink 41702 - Disclosure - Bank borrowings (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 41703 - Disclosure - Bank borrowings - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 41801 - Disclosure - Convertible notes at fair value (Details) link:presentationLink link:calculationLink link:definitionLink 41802 - Disclosure - Convertible notes at fair value - Schedule of Issuance of Convertible Notes (Details) link:presentationLink link:calculationLink link:definitionLink 41803 - Disclosure - Convertible notes at fair value - Schedule of movement of transactions of convertible notes (Details) link:presentationLink link:calculationLink link:definitionLink 41804 - Disclosure - Convertible notes at fair value - Schedule of Details of Conversion of Convertible Notes (Details) link:presentationLink link:calculationLink link:definitionLink 41805 - Disclosure - Convertible notes at fair value - Schedule of Redeemed Convertible Notes (Details) link:presentationLink link:calculationLink link:definitionLink 41806 - Disclosure - Convertible notes at fair value - Summary of fair value of the notes determined using monte carlo simulation with key assumptions (Details) link:presentationLink link:calculationLink link:definitionLink 41807 - Disclosure - Convertible notes at fair value - Summary of bond yield (Details) link:presentationLink link:calculationLink link:definitionLink 41901 - Disclosure - Ordinary shares (Details) link:presentationLink link:calculationLink link:definitionLink 42001 - Disclosure - Repurchase of shares (Details) link:presentationLink link:calculationLink link:definitionLink 42101 - Disclosure - Share-based compensation - Additional information (Details) link:presentationLink link:calculationLink link:definitionLink 42103 - Disclosure - Share-based compensation - RSUs Activity (Details) link:presentationLink link:calculationLink link:definitionLink 42104 - Disclosure - Share-based compensation - RSUs Activity (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 42105 - Disclosure - Share-based compensation - Issuance of warrants to an external consultant (Details) link:presentationLink link:calculationLink link:definitionLink 42106 - Disclosure - Share-based compensation - Summary of assumptions used in estimation of fair value of warrants granted (Details) link:presentationLink link:calculationLink link:definitionLink 42107 - Disclosure - Share-based compensation - Summary of compensation costs recognized (Details) link:presentationLink link:calculationLink link:definitionLink 42301 - Disclosure - Income tax - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 42304 - Disclosure - Income tax - Operating tax loss carry forwards expiring years (Details) link:presentationLink link:calculationLink link:definitionLink 42402 - Disclosure - Basic and diluted net loss per share - Computation of diluted net loss per ordinary share (Details) link:presentationLink link:calculationLink link:definitionLink 42602 - Disclosure - Segments - Summary of Group's Breakdown of Net Revenues by Type of Good or Service and Operating Segment (Details) link:presentationLink link:calculationLink link:definitionLink 42603 - Disclosure - Segments - Summary of revenue generated for the respective countries (Details) link:presentationLink link:calculationLink link:definitionLink 42604 - Disclosure - Segments - Summary of long-lived assets (Details) link:presentationLink link:calculationLink link:definitionLink 43002 - Disclosure - ADDITIONAL INFORMATION: CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY - CONDENSED BALANCE SHEETS (Details) link:presentationLink link:calculationLink link:definitionLink 9940210 - Disclosure - Principal accounting policies - Lease accounting (Details) link:presentationLink link:calculationLink link:definitionLink 10101 - Disclosure - Organization and principal activities link:presentationLink link:calculationLink link:definitionLink 10201 - Disclosure - Principal accounting policies link:presentationLink link:calculationLink link:definitionLink 10301 - Disclosure - Certain risks and concentration link:presentationLink link:calculationLink link:definitionLink 10401 - Disclosure - Acquisitions link:presentationLink link:calculationLink link:definitionLink 10501 - Disclosure - Cash and cash equivalents and time deposits link:presentationLink link:calculationLink link:definitionLink 10601 - Disclosure - Restricted cash link:presentationLink link:calculationLink link:definitionLink 10701 - Disclosure - Equity investment link:presentationLink link:calculationLink link:definitionLink 10801 - Disclosure - Other long-term investments link:presentationLink link:calculationLink link:definitionLink 10901 - Disclosure - Accounts receivable, net link:presentationLink link:calculationLink link:definitionLink 11001 - Disclosure - Other assets link:presentationLink link:calculationLink link:definitionLink 11101 - Disclosure - Property and equipment, net link:presentationLink link:calculationLink link:definitionLink 11201 - Disclosure - Intangible assets, net link:presentationLink link:calculationLink link:definitionLink 11301 - Disclosure - Goodwill link:presentationLink link:calculationLink link:definitionLink 11401 - Disclosure - Lease accounting link:presentationLink link:calculationLink link:definitionLink 11501 - Disclosure - Deferred revenue link:presentationLink link:calculationLink link:definitionLink 11601 - Disclosure - Accrued liabilities and other liabilities link:presentationLink link:calculationLink link:definitionLink 11701 - Disclosure - Bank borrowings link:presentationLink link:calculationLink link:definitionLink 11801 - Disclosure - Convertible notes at fair value link:presentationLink link:calculationLink link:definitionLink 11901 - Disclosure - Ordinary shares link:presentationLink link:calculationLink link:definitionLink 12001 - Disclosure - Repurchase of shares link:presentationLink link:calculationLink link:definitionLink 12101 - Disclosure - Share-based compensation link:presentationLink link:calculationLink link:definitionLink 12201 - Disclosure - Other gains/(losses), net link:presentationLink link:calculationLink link:definitionLink 12301 - Disclosure - Income tax link:presentationLink link:calculationLink link:definitionLink 12401 - Disclosure - Basic and diluted net loss per share link:presentationLink link:calculationLink link:definitionLink 12501 - Disclosure - Related party transactions link:presentationLink link:calculationLink link:definitionLink 12601 - Disclosure - Segments link:presentationLink link:calculationLink link:definitionLink 12701 - Disclosure - Commitments and contingencies link:presentationLink link:calculationLink link:definitionLink 12801 - Disclosure - Restricted net assets link:presentationLink link:calculationLink link:definitionLink 13001 - Disclosure - ADDITIONAL INFORMATION: CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY link:presentationLink link:calculationLink link:definitionLink 20202 - Disclosure - Principal accounting policies (Policies) link:presentationLink link:calculationLink link:definitionLink 30103 - Disclosure - Organization and principal activities (Tables) link:presentationLink link:calculationLink link:definitionLink 30203 - Disclosure - Principal accounting policies (Tables) link:presentationLink link:calculationLink link:definitionLink 30303 - Disclosure - Certain risks and concentration (Tables) link:presentationLink link:calculationLink link:definitionLink 30503 - Disclosure - Cash and cash equivalents and time deposits (Tables) link:presentationLink link:calculationLink link:definitionLink 30703 - Disclosure - Equity investment (Tables) link:presentationLink link:calculationLink link:definitionLink 30803 - Disclosure - Other long-term investments (Tables) link:presentationLink link:calculationLink link:definitionLink 30903 - Disclosure - Accounts receivable, net (Tables) link:presentationLink link:calculationLink link:definitionLink 31003 - Disclosure - Other assets (Tables) link:presentationLink link:calculationLink link:definitionLink 31103 - Disclosure - Property and equipment, net (Tables) link:presentationLink link:calculationLink link:definitionLink 31203 - Disclosure - Intangible assets, net (Tables) link:presentationLink link:calculationLink link:definitionLink 31303 - Disclosure - Goodwill (Tables) link:presentationLink link:calculationLink link:definitionLink 31403 - Disclosure - Lease accounting (Tables) link:presentationLink link:calculationLink link:definitionLink 31503 - Disclosure - Deferred revenue (Tables) link:presentationLink link:calculationLink link:definitionLink 31603 - Disclosure - Accrued liabilities and other liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink 31703 - Disclosure - Bank borrowings (Tables) link:presentationLink link:calculationLink link:definitionLink 31803 - Disclosure - Convertible notes at fair value (Tables) link:presentationLink link:calculationLink link:definitionLink 32003 - Disclosure - Repurchase of shares (Tables) link:presentationLink link:calculationLink link:definitionLink 32103 - Disclosure - Share-based compensation (Tables) link:presentationLink link:calculationLink link:definitionLink 32203 - Disclosure - Other gains/(losses), net (Tables) link:presentationLink link:calculationLink link:definitionLink 32303 - Disclosure - Income tax (Tables) link:presentationLink link:calculationLink link:definitionLink 32403 - Disclosure - Basic and diluted net loss per share (Tables) link:presentationLink link:calculationLink link:definitionLink 32603 - Disclosure - Segments (Tables) link:presentationLink link:calculationLink link:definitionLink 40201 - Disclosure - Principal accounting policies - Fair value of financial instruments (Details) link:presentationLink link:calculationLink link:definitionLink 40205 - Disclosure - Principal accounting policies - Investments in an equity investee (Details) link:presentationLink link:calculationLink link:definitionLink 40206 - Disclosure - Principal accounting policies - Other long-term investments (Details) link:presentationLink link:calculationLink link:definitionLink 40210 - Disclosure - Principal accounting policies - Derivative financial instrument (Details) link:presentationLink link:calculationLink link:definitionLink 40212 - Disclosure - Principal accounting policies - Revenue recognition and cost of revenues - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 40214 - Disclosure - Principal accounting policies - Revenue recognition and cost of revenues - Contract balances (Details) link:presentationLink link:calculationLink link:definitionLink 40215 - Disclosure - Principal accounting policies - Revenue recognition and cost of revenues - Practical expedients (Details) link:presentationLink link:calculationLink link:definitionLink 40216 - Disclosure - Principal accounting policies - Research and development expenses (Details) link:presentationLink link:calculationLink link:definitionLink 40217 - Disclosure - Principal accounting policies - Sales and marketing expenses (Details) link:presentationLink link:calculationLink link:definitionLink 40218 - Disclosure - Principal accounting policies - Uncertain tax positions (Details) link:presentationLink link:calculationLink link:definitionLink 40219 - Disclosure - Principal accounting policies - Statutory reserves (Details) link:presentationLink link:calculationLink link:definitionLink 40220 - Disclosure - Principal accounting policies - Dividends (Details) link:presentationLink link:calculationLink link:definitionLink 40221 - Disclosure - Principal accounting policies - Segment reporting (Details) link:presentationLink link:calculationLink link:definitionLink 40303 - Disclosure - Certain risks and concentration - Financial Data for VIEs (Details) link:presentationLink link:calculationLink link:definitionLink 40501 - Disclosure - Cash and cash equivalents and time deposits (Details) link:presentationLink link:calculationLink link:definitionLink 40702 - Disclosure - Equity investment - Summary of investment in V-Click (Details) link:presentationLink link:calculationLink link:definitionLink 40801 - Disclosure - Other Long-term investments - Summary of Other Long-term Investments (Details) link:presentationLink link:calculationLink link:definitionLink 40802 - Disclosure - Other Long-term investments - Summary of Movement of Other Long-term Investments and Prepayments for Long-term Investments (Details) link:presentationLink link:calculationLink link:definitionLink 40803 - Disclosure - Other Long-term investments (Details) link:presentationLink link:calculationLink link:definitionLink 41404 - Disclosure - Lease accounting - Summary of supplemental cash flow information related to operating leases (Details) link:presentationLink link:calculationLink link:definitionLink 41501 - Disclosure - Deferred revenue (Details) link:presentationLink link:calculationLink link:definitionLink 41502 - Disclosure - Deferred revenue - Changes in deferred revenue balances (Details) link:presentationLink link:calculationLink link:definitionLink 41704 - Disclosure - Bank borrowings - Weighted average interest rate (Details) link:presentationLink link:calculationLink link:definitionLink 42102 - Disclosure - Share-based compensation - Share option activities (Details) link:presentationLink link:calculationLink link:definitionLink 42202 - Disclosure - Other gains/(losses), net - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 42305 - Disclosure - Income tax - Movement of valuation allowance (Details) link:presentationLink link:calculationLink link:definitionLink 42401 - Disclosure - Basic and diluted net loss per share - Summary of basic and diluted net loss per share (Details) link:presentationLink link:calculationLink link:definitionLink 42601 - Disclosure - Segments (Details) link:presentationLink link:calculationLink link:definitionLink 42701 - Disclosure - Commitments and contingencies - Schedule of Capital Expenditures Contracted (Details) link:presentationLink link:calculationLink link:definitionLink 42801 - Disclosure - Restricted net assets - Additional information (Details) link:presentationLink link:calculationLink link:definitionLink 43001 - Disclosure - ADDITIONAL INFORMATION: CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY (Details) link:presentationLink link:calculationLink link:definitionLink 99900 - Disclosure - Standard And Custom Axis Domain Defaults link:presentationLink link:calculationLink link:definitionLink