WB [WEIBO] F-1/A: CALCULATION OF REGISTRATION FEE Title of each class

[CALCULATION OF REGISTRATION FEE Title of each class of securities to (1)(2) Amount to be (1) Proposed maximum (1)(2) Proposed maximum Amount of registration (3) Class A ordinary shares, par value $0.00025 per share 23,000,000 $19.00 $437,000,000 (4) $56,285.60 (1) Estimated solely for the purpose of determining the amount of registration fee in accordance with Rule 457(a) under the Securities] [Weibo Corporation [20,000,000] Class A Ordinary Shares, in the form of American Depositary Shares Underwriting Agreement April [ ], 2014 Goldman Sachs (Asia) L.L.C., Credit Suisse Securities (USA) LLC As representatives of the several Underwriters named in Schedule I hereto, c/o Goldman Sachs (Asia) L.L.C. 68th Floor, Cheung Kong Center, 2 Queen’s Road Central, Hong Kong Ladies and Gentlemen: Company] [Weibo Corporation NAME AND ADDRESS CERTIFICATE NUMBER DISTINCTIVE NUMBERS PAR VALUE PER SHARE OF SHAREHOLDER FROM TO DATE OF ISSUE NO. OF SHARES CONSIDERATION PAID SHARE CERTIFICATE OF Weibo Corporation INCORPORATED IN THE CAYMAN ISLANDS THIS IS TO CERTIFY THAT THE UNDERMENTIONED PERSON IS THE REGISTERED HOLDER OF THE SHARES SPECIFIED HEREUNDER SUBJECT TO THE MEMORANDUM AND ARTICLES OF ASSOCIATION] [J.P.Morgan TABLE OF CONTENTS Page PARTIES 1 RECITALS 1 Section 1. Certain Definitions (a) ADR Register 1 (b) ADRs; Direct Registration ADRs 1 (c) ADS 1 (d) Custodian 1 (e) Deliver, execute, issue et al. 1 (f) Delivery Order 2 (g) Deposited Securities 2 (h) Direct Registration System 2 (i) Holder] [Our ref SSY/688185-000001/6814757v3 Direct tel +852 2971 3046 Email richard.spooner@maplesandcalder.com Weibo Corporation 7/F, Shuohuang Development Plaza, No. 6 Caihefang Road, Haidian District, Beijing, 100080 People’s Republic of China 14 April 2014 Dear Sirs Weibo Corporation Company Registration Statement ADSs Shares We have acted as Cayman Islands legal advisers to Weibo Corporation (the “ 1 Documents Reviewed For the purposes of] [AMENDED AND RESTATED SHAREHOLDERS’ AGREEMENT among ALI WB INVESTMENT HOLDING LIMITED, SINA CORPORATION and WEIBO CORPORATION dated as of March 14, 2014 TABLE OF CONTENTS Page ARTICLE I DEFINITIONS SECTION 1.01. Certain Defined Terms 1 SECTION 1.02. Interpretation and Rules of Construction 11 ARTICLE II GOVERNANCE SECTION 2.01. Agreement to Vote 11 SECTION 2.02. Size and Composition of Board 12] [CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We hereby consent to the use in this Registration Statement on Form F-1 of Weibo Corporation of our report dated February 18, 2014 relating to the combined and consolidated financial statements of Weibo Corporation, which appears in such Registration Statement. We also consent to the reference to us under the heading “Experts” in] [April 12, 2014 Weibo Corporation 7/F, Shuohuang Development Plaza, No. 6 Caihefang Road, Haidian District, Beijing, 100080 People’s Republic of China Dear Sirs/Madams: Re: Weibo Corporation PRC Company Registration Statement Offering ADSs Ordinary Shares We are lawyers qualified in the People’s Republic of China (“ Opinion With respect to the Offering, you have requested us to furnish an opinion (the]

VNET [21Vianet] 6-K: (Original Filing)

[21Vianet Group, Inc. Filed its Annual Report on Form 20-F About 21Vianet 21Vianet Group, Inc. is the largest carrier-neutral internet data center services provider in China. 21Vianet provides hosting and related services, managed network services, cloud infrastructure services, and content delivery network services, improving the reliability, security and speed of its customers’ internet infrastructure. Customers may locate their servers and] [21Vianet Group, Inc. By : : Shang-Wen Hsiao : Chief Financial Officer 6-K 1 d708061d6k.htm FORM 6-K]

VNET [21Vianet] 6-K: 21Vianet Group, Inc. Filed its Annual Report on

[21Vianet Group, Inc. Filed its Annual Report on Form 20-F About 21Vianet 21Vianet Group, Inc. is the largest carrier-neutral internet data center services provider in China. 21Vianet provides hosting and related services, managed network services, cloud infrastructure services, and content delivery network services, improving the reliability, security and speed of its customers’ internet infrastructure. Customers may locate their servers and] [21Vianet Group, Inc. By : : Shang-Wen Hsiao : Chief Financial Officer 6-K 1 d708061d6k.htm FORM 6-K]

VNET [21Vianet] 20-F: (Original Filing)

[INTRODUCTION 1 PART I 2 ITEM 1. IDENTITY OF DIRECTORS, SENIOR MANAGEMENT AND ADVISERS 2 ITEM 2. OFFER STATISTICS AND EXPECTED TIMETABLE 2 ITEM 3. KEY INFORMATION 2 ITEM 4. INFORMATION ON THE COMPANY 37 ITEM 4A. UNRESOLVED STAFF COMMENTS 55 ITEM 5. OPERATING AND FINANCIAL REVIEW AND PROSPECTS 56 ITEM 6. DIRECTORS, SENIOR MANAGEMENT AND EMPLOYEES 82 ITEM 7.] [List of Significant Subsidiaries and Principal Consolidated Affiliated Entities* Significant Subsidiaries Jurisdiction of Incorporation 21ViaNet Group Limited Hong Kong iJoy Holding Limited British Virgin Islands Asiacloud Wireless Limited Hong Kong 21Vianet Data Center Co., Ltd. PRC 21Vianet Anhui Suzhou Technology Co., Ltd. PRC Suzhou Zhuoaiyi Information Technology Co., Ltd. PRC 21Vianet (Foshan) Technology Co., Ltd. PRC Principal Consolidated Affiliated Entities] [I, Sheng Chen, certify that: 1. I have reviewed this annual report on Form 20-F of 21Vianet Group, Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made,] [Certification by the Principal Financial Officer I, Shang-Wen Hsiao, certify that: 1. I have reviewed this annual report on Form 20-F of 21Vianet Group, Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances] [(1) (2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. Sheng Chen Chief Executive Officer EX-13.1 5 d611305dex131.htm EX-13.1] [Certification by the Principal Financial Officer (1) (2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. Shang-Wen Hsiao Chief Financial Officer EX-13.2 6 d611305dex132.htm EX-13.2] [CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM Shanghai, People’s Republic of China April 9, 2014 EX-15.1 7 d611305dex151.htm EX-15.1] [Consent of King & Wood Mallesons To: 21Vianet Group, Inc. M5, 1 Jiuxianqiao East Road Chaoyang District, Beijing 100016 the People’s Republic of China Dear Sirs, Yours faithfully, King & Wood Mallesons EX-15.2 8 d611305dex152.htm EX-15.2]

VNET [21Vianet] 20-F: INTRODUCTION 1 PART I 2 ITEM 1. IDENTITY

[INTRODUCTION 1 PART I 2 ITEM 1. IDENTITY OF DIRECTORS, SENIOR MANAGEMENT AND ADVISERS 2 ITEM 2. OFFER STATISTICS AND EXPECTED TIMETABLE 2 ITEM 3. KEY INFORMATION 2 ITEM 4. INFORMATION ON THE COMPANY 37 ITEM 4A. UNRESOLVED STAFF COMMENTS 55 ITEM 5. OPERATING AND FINANCIAL REVIEW AND PROSPECTS 56 ITEM 6. DIRECTORS, SENIOR MANAGEMENT AND EMPLOYEES 82 ITEM 7.] [List of Significant Subsidiaries and Principal Consolidated Affiliated Entities* Significant Subsidiaries Jurisdiction of Incorporation 21ViaNet Group Limited Hong Kong iJoy Holding Limited British Virgin Islands Asiacloud Wireless Limited Hong Kong 21Vianet Data Center Co., Ltd. PRC 21Vianet Anhui Suzhou Technology Co., Ltd. PRC Suzhou Zhuoaiyi Information Technology Co., Ltd. PRC 21Vianet (Foshan) Technology Co., Ltd. PRC Principal Consolidated Affiliated Entities] [I, Sheng Chen, certify that: 1. I have reviewed this annual report on Form 20-F of 21Vianet Group, Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made,] [Certification by the Principal Financial Officer I, Shang-Wen Hsiao, certify that: 1. I have reviewed this annual report on Form 20-F of 21Vianet Group, Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances] [(1) (2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. Sheng Chen Chief Executive Officer EX-13.1 5 d611305dex131.htm EX-13.1] [Certification by the Principal Financial Officer (1) (2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. Shang-Wen Hsiao Chief Financial Officer EX-13.2 6 d611305dex132.htm EX-13.2] [CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM Shanghai, People’s Republic of China April 9, 2014 EX-15.1 7 d611305dex151.htm EX-15.1] [Consent of King & Wood Mallesons To: 21Vianet Group, Inc. M5, 1 Jiuxianqiao East Road Chaoyang District, Beijing 100016 the People’s Republic of China Dear Sirs, Yours faithfully, King & Wood Mallesons EX-15.2 8 d611305dex152.htm EX-15.2]

WB [WEIBO] CORRESP: (Original Filing)

[KADDEN RPS LATE EAGHER LOM S ARTNERS P OHN DEBIYI ¿ J HRISTOPHER ETTS C DWARD AM ¿ E AUL ITCHARD ¿ G.S. P LIVE OUGH ¿ C ONATHAN TONE J LEC RACY A ¿ LSO DMITTED IN NGLAND ALES LSO DMITTED IN EW ORK * (A EGISTERED OREIGN AWYERS R ULIE AO ALIFORNIA Z. J REGORY IAO EW ORK]

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