1001 - Document - Document and Entity Information link:calculationLink link:presentationLink link:definitionLink 1003 - Statement - Consolidated Balance Sheets link:calculationLink link:presentationLink link:definitionLink 1004 - Statement - Consolidated Balance Sheets (Parenthetical) link:calculationLink link:presentationLink link:definitionLink 1005 - Statement - Consolidated Statements of Comprehensive Loss link:calculationLink link:presentationLink link:definitionLink 1006 - Statement - Consolidated Statements of Comprehensive Loss (Parenthetical) link:calculationLink link:presentationLink link:definitionLink 1007 - Statement - Consolidated Statements of Changes in Shareholders' (Deficit ) Equity link:calculationLink link:presentationLink link:definitionLink 1008 - Statement - Consolidated Statements of Cash Flows link:calculationLink link:presentationLink link:definitionLink 1009 - Disclosure - Organization and principal activities link:calculationLink link:presentationLink link:definitionLink 1010 - Disclosure - Principal accounting policies link:calculationLink link:presentationLink link:definitionLink 1011 - Disclosure - Certain risks and concentration link:calculationLink link:presentationLink link:definitionLink 1012 - Disclosure - Business Acquisition link:calculationLink link:presentationLink link:definitionLink 1013 - Disclosure - Cash and cash equivalents and time deposit link:calculationLink link:presentationLink link:definitionLink 1014 - Disclosure - Restricted cash link:calculationLink link:presentationLink link:definitionLink 1015 - Disclosure - Accounts receivable, net link:calculationLink link:presentationLink link:definitionLink 1016 - Disclosure - Other assets link:calculationLink link:presentationLink link:definitionLink 1017 - Disclosure - Property and equipment, net link:calculationLink link:presentationLink link:definitionLink 1018 - Disclosure - Intangible assets, net link:calculationLink link:presentationLink link:definitionLink 1019 - Disclosure - Goodwill link:calculationLink link:presentationLink link:definitionLink 1020 - Disclosure - Deferred revenue link:calculationLink link:presentationLink link:definitionLink 1021 - Disclosure - Accrued liabilities and other current liabilities link:calculationLink link:presentationLink link:definitionLink 1022 - Disclosure - Bank borrowings link:calculationLink link:presentationLink link:definitionLink 1023 - Disclosure - Redeemable convertible preferred shares link:calculationLink link:presentationLink link:definitionLink 1024 - Disclosure - Redeemable ordinary shares link:calculationLink link:presentationLink link:definitionLink 1025 - Disclosure - Ordinary shares link:calculationLink link:presentationLink link:definitionLink 1026 - Disclosure - Share-based compensation link:calculationLink link:presentationLink link:definitionLink 1027 - Disclosure - Other gains/(losses), net link:calculationLink link:presentationLink link:definitionLink 1028 - Disclosure - Income tax link:calculationLink link:presentationLink link:definitionLink 1029 - Disclosure - Basic and diluted net loss per share link:calculationLink link:presentationLink link:definitionLink 1030 - Disclosure - Segment link:calculationLink link:presentationLink link:definitionLink 1031 - Disclosure - Commitments and contingencies link:calculationLink link:presentationLink link:definitionLink 1032 - Disclosure - Restricted net assets link:calculationLink link:presentationLink link:definitionLink 1033 - Disclosure - Additional Information: Condensed Financial Statements of Parent Company link:calculationLink link:presentationLink link:definitionLink 1034 - Disclosure - Principal accounting policies (Policies) link:calculationLink link:presentationLink link:definitionLink 1035 - Disclosure - Organization and principal activities (Tables) link:calculationLink link:presentationLink link:definitionLink 1036 - Disclosure - Principal accounting policies (Tables) link:calculationLink link:presentationLink link:definitionLink 1037 - Disclosure - Certain risks and concentration (Tables) link:calculationLink link:presentationLink link:definitionLink 1038 - Disclosure - Business Acquisition (Tables) link:calculationLink link:presentationLink link:definitionLink 1039 - Disclosure - Cash and cash equivalents and time deposit (Tables) link:calculationLink link:presentationLink link:definitionLink 1040 - Disclosure - Accounts receivable, net (Tables) link:calculationLink link:presentationLink link:definitionLink 1041 - Disclosure - Other assets (Tables) link:calculationLink link:presentationLink link:definitionLink 1042 - Disclosure - Property and equipment, net (Tables) link:calculationLink link:presentationLink link:definitionLink 1043 - Disclosure - Intangible assets, net (Tables) link:calculationLink link:presentationLink link:definitionLink 1044 - Disclosure - Goodwill (Tables) link:calculationLink link:presentationLink link:definitionLink 1045 - Disclosure - Deferred revenue (Tables) link:calculationLink link:presentationLink link:definitionLink 1046 - Disclosure - Accrued liabilities and other current liabilities (Tables) link:calculationLink link:presentationLink link:definitionLink 1047 - Disclosure - Bank borrowings (Tables) link:calculationLink link:presentationLink link:definitionLink 1048 - Disclosure - Redeemable convertible preferred shares (Tables) link:calculationLink link:presentationLink link:definitionLink 1049 - Disclosure - Share-based compensation (Tables) link:calculationLink link:presentationLink link:definitionLink 1050 - Disclosure - Other gains/(losses), net (Tables) link:calculationLink link:presentationLink link:definitionLink 1051 - Disclosure - Income tax (Tables) link:calculationLink link:presentationLink link:definitionLink 1052 - Disclosure - Basic and diluted net loss per share (Tables) link:calculationLink link:presentationLink link:definitionLink 1053 - Disclosure - Segment (Tables) link:calculationLink link:presentationLink link:definitionLink 1054 - Disclosure - Commitments and contingencies (Tables) link:calculationLink link:presentationLink link:definitionLink 1055 - Disclosure - Additional Information: Condensed Financial Statements of Parent Company (Tables) link:calculationLink link:presentationLink link:definitionLink 1056 - Disclosure - Organization and Principal Activities - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1057 - Disclosure - Organization and Principal Activities - Summary of Subsidiaries of Company and Consolidated Variable Interest Entities (Detail) link:calculationLink link:presentationLink link:definitionLink 1058 - Disclosure - Principal Accounting Policies - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1059 - Disclosure - Principal Accounting Policies - Summary of Estimated Useful Lives of Property and Equipment (Detail) link:calculationLink link:presentationLink link:definitionLink 1060 - Disclosure - Principal Accounting Policies - Summary of Estimated Useful Lives of Intangible Assets (Detail) link:calculationLink link:presentationLink link:definitionLink 1061 - Disclosure - Certain Risks and Concentration - Schedule of Financial Information of VIEs and its subsidiary Excluding Intercompany Items with Company's Subsidiaries (Consolidated Balance Sheets) (Detail) link:calculationLink link:presentationLink link:definitionLink 1062 - Disclosure - Certain Risks and Concentration - Schedule of Financial Information of VIEs and its subsidiary Excluding Intercompany Items with Company's Subsidiaries (Consolidated Statements of Comprehensive Loss) (Detail) link:calculationLink link:presentationLink link:definitionLink 1063 - Disclosure - Certain Risks and Concentration - Schedule of Financial Information of VIEs and its subsidiary Excluding Intercompany Items with Company's Subsidiaries (Consolidated Statements of Cash Flows) (Detail) link:calculationLink link:presentationLink link:definitionLink 1064 - Disclosure - Certain Risks and Concentration - Schedule of Estimated Fair Values of Financial Assets and Liabilities (Detail) link:calculationLink link:presentationLink link:definitionLink 1065 - Disclosure - Certain Risks and Concentration - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1066 - Disclosure - Business Acquisitions - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1067 - Disclosure - Business Acquisition - Schedule of Movement of Carrying Value of Equity Method Investment (Detail) link:calculationLink link:presentationLink link:definitionLink 1068 - Disclosure - Business Acquisition - Schedule of Fair value of Consideration Transferred (Detail) link:calculationLink link:presentationLink link:definitionLink 1069 - Disclosure - Business Acquisition - Schedule of Recognized Amounts of Identifiable Assets Acquired and Liabilities Assumed (Detail) link:calculationLink link:presentationLink link:definitionLink 1070 - Disclosure - Business Acquisition - Schedule of Estimated Amounts Recognized on Acquired Identifiable Intangible Asset and its Estimated Useful Life (Detail) link:calculationLink link:presentationLink link:definitionLink 1071 - Disclosure - Business Acquisition - Schedule of Unaudited Pro Forma Operating Results (Detail) link:calculationLink link:presentationLink link:definitionLink 1072 - Disclosure - Cash and Cash Equivalents and Time Deposit - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1073 - Disclosure - Cash and Cash Equivalents and Time Deposit - Schedule of Cash on Hand and Cash Held at Bank (Detail) link:calculationLink link:presentationLink link:definitionLink 1074 - Disclosure - Restricted Cash - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1075 - Disclosure - Accounts Receivables, Net - Summary of Accounts Receivable (Detail) link:calculationLink link:presentationLink link:definitionLink 1076 - Disclosure - Accounts Receivables, Net - Summary of Movement in Allowance for Doubtful Accounts (Detail) link:calculationLink link:presentationLink link:definitionLink 1077 - Disclosure - Other Assets - Summary of Other Assets (Detail) link:calculationLink link:presentationLink link:definitionLink 1078 - Disclosure - Property and Equipment, Net - Summary of Property and Equipment (Detail) link:calculationLink link:presentationLink link:definitionLink 1079 - Disclosure - Property and Equipment, Net - Summary of Depreciation Expense Recognized (Detail) link:calculationLink link:presentationLink link:definitionLink 1080 - Disclosure - Intangible Assets, Net - Summary of Intangible Assets (Detail) link:calculationLink link:presentationLink link:definitionLink 1081 - Disclosure - Intangible Assets, Net - Summary of Amortization Expense Recognized (Detail) link:calculationLink link:presentationLink link:definitionLink 1082 - Disclosure - Intangible Assets, Net - Summary of Estimated Aggregate Amortization Expense (Detail) link:calculationLink link:presentationLink link:definitionLink 1083 - Disclosure - Goodwill - Summary of Movements on Goodwill (Detail) link:calculationLink link:presentationLink link:definitionLink 1084 - Disclosure - Goodwill - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1085 - Disclosure - Deferred Revenue - Summary of Deferred Revenue (Detail) link:calculationLink link:presentationLink link:definitionLink 1086 - Disclosure - Accrued Liabilities and Other Current Liabilities - Summary of Accrued Liabilities and Other Current Liabilities (Detail) link:calculationLink link:presentationLink link:definitionLink 1087 - Disclosure - Bank Borrowings - Summary of Bank Borrowings (Detail) link:calculationLink link:presentationLink link:definitionLink 1088 - Disclosure - Bank Borrowings - Summary of Bank Borrowings (Parenthetical) (Detail) link:calculationLink link:presentationLink link:definitionLink 1089 - Disclosure - Bank Borrowings - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1090 - Disclosure - Redeemable Convertible Preferred Shares - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1091 - Disclosure - Redeemable Convertible Preferred Shares - Fair Values of Conversion Features and Redemption Features Which Required to Be Bifurcated and Accounted for as Derivative Liabilities (Detail) link:calculationLink link:presentationLink link:definitionLink 1092 - Disclosure - Redeemable Convertible Preferred Shares - Schedule of Significant Estimates Used to Calculate Fair Value of Preferred Shares for Determining Conversion Feature and Redemption Feature (Detail) link:calculationLink link:presentationLink link:definitionLink 1093 - Disclosure - Redeemable Ordinary Shares - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1094 - Disclosure - Ordinary Shares - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1095 - Disclosure - Share-based compensation - Summary of Share Options Granted (Detail) link:calculationLink link:presentationLink link:definitionLink 1096 - Disclosure - Share-based compensation - Summary of Share Options Granted (Parenthetical) (Detail) link:calculationLink link:presentationLink link:definitionLink 1097 - Disclosure - Share-based Compensation - Summary of Share Option Activity (Detail) link:calculationLink link:presentationLink link:definitionLink 1098 - Disclosure - Share-based Compensation - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1099 - Disclosure - Share-based Compensation - Summary of Fair Values of Share Options Granted (Detail) link:calculationLink link:presentationLink link:definitionLink 1100 - Disclosure - Share-based Compensation - Summary of Compensation Costs Recognized (Detail) link:calculationLink link:presentationLink link:definitionLink 1101 - Disclosure - Other Gains/(Losses), Net - Tabular Disclosure of Gain (Loss) Related to Nonoperating Activities, Classified as Other (Detail) link:calculationLink link:presentationLink link:definitionLink 1102 - Disclosure - Income Tax - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1103 - Disclosure - Income Tax - Disclosure of Current and Deferred Portions of Income Tax Expense (Detail) link:calculationLink link:presentationLink link:definitionLink 1104 - Disclosure - Income Tax - Disclosure of Deferred Tax Assets and Liabilities (Detail) link:calculationLink link:presentationLink link:definitionLink 1105 - Disclosure - Income Tax - Disclosure of Movement of Valuation Allowance (Detail) link:calculationLink link:presentationLink link:definitionLink 1106 - Disclosure - Income Tax - Disclosure of Operating Tax Loss Carry Forwards Expiring Years (Detail) link:calculationLink link:presentationLink link:definitionLink 1107 - Disclosure - Income Tax - Disclosure of Reconciliation Between Expense of Income Taxes (Detail) link:calculationLink link:presentationLink link:definitionLink 1108 - Disclosure - Basic and Diluted Net Loss per Share - Summary of Basic and Diluted Net Loss Per Share (Detail) link:calculationLink link:presentationLink link:definitionLink 1109 - Disclosure - Basic and Diluted Net Loss per Share - Computation of Diluted Net Loss Per Ordinary Share (Detail) link:calculationLink link:presentationLink link:definitionLink 1110 - Disclosure - Segment - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1111 - Disclosure - Segment - Summary of Revenue Generated for the Respective Countries (Detail) link:calculationLink link:presentationLink link:definitionLink 1112 - Disclosure - Segment - Summary of Long-Lived Assets (Detail) link:calculationLink link:presentationLink link:definitionLink 1113 - Disclosure - Commitments and Contingencies - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1114 - Disclosure - Commitments and Contingencies - Summary of Operating Leases for Office Rental (Detail) link:calculationLink link:presentationLink link:definitionLink 1115 - Disclosure - Restricted Net Assets - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1116 - Disclosure - Additional Information: Condensed Financial Statements of Parent Company - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1117 - Disclosure - Additional Information: Condensed Financial Statements of Parent Company - Summary of Condensed Balance Sheets (Detail) link:calculationLink link:presentationLink link:definitionLink 1118 - Disclosure - Additional Information: Condensed Financial Statements of Parent Company - Summary of Condensed Balance Sheets (Parenthetical) (Detail) link:calculationLink link:presentationLink link:definitionLink 1119 - Disclosure - Additional Information: Condensed Financial Statements of Parent Company - Condensed Statements of Comprehensive Loss (Detail) link:calculationLink link:presentationLink link:definitionLink 1120 - Disclosure - Additional Information: Condensed Financial Statements of Parent Company - Summary of Condensed Statements of Cash Flows (Detail) link:calculationLink link:presentationLink link:definitionLink