VNET [21Vianet] SC 13G/A: (Name of Issuer) Common Stock (Title of Class

[(Name of Issuer) Common Stock (Title of Class of Securities) (CUSIP Number) December 31, 2015 (Date of Event Which Requires Filing of this Statement) [X] Rule 13d-1(b) [ ] Rule 13d-1(c) [ ] Rule 13d-1(d) * CUSIP No. 1. NAMES OF REPORTING PERSONS 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP 3. SEC USE ONLY 4. CITIZENSHIP]

BIDU [Baidu] SC 13G/A: (Original Filing)

[T. ROWE PRICE ASSOCIATES, INC. 52-0556948 2 Check the Appropriate Box if a Member of a Group NOT APPLICABLE 3 SEC Use Only ______________________________ 4 Citizenship or Place of Organization MARYLAND Number of Shares Beneficially Owned by Each Reporting Person With 5 Sole Voting Power* 149,626 6 Shared Voting Power* -0- 7 Sole Dispositive Power* 709,193 8 Shared Dispositive Power]

BIDU [Baidu] SC 13G/A: T. ROWE PRICE ASSOCIATES, INC. 52-0556948 2 Check

[T. ROWE PRICE ASSOCIATES, INC. 52-0556948 2 Check the Appropriate Box if a Member of a Group NOT APPLICABLE 3 SEC Use Only ______________________________ 4 Citizenship or Place of Organization MARYLAND Number of Shares Beneficially Owned by Each Reporting Person With 5 Sole Voting Power* 149,626 6 Shared Voting Power* -0- 7 Sole Dispositive Power* 709,193 8 Shared Dispositive Power]

WUBA [58.com] SC 13G/A: (Original Filing)

[T. ROWE PRICE ASSOCIATES, INC. 52-0556948 2 Check the Appropriate Box if a Member of a Group NOT APPLICABLE 3 SEC Use Only ______________________________ 4 Citizenship or Place of Organization MARYLAND Number of Shares Beneficially Owned by Each Reporting Person With 5 Sole Voting Power* 1,738,340 6 Shared Voting Power* -0- 7 Sole Dispositive Power* 10,564,542 8 Shared Dispositive Power]

WUBA [58.com] SC 13G/A: T. ROWE PRICE ASSOCIATES, INC. 52-0556948 2 Check

[T. ROWE PRICE ASSOCIATES, INC. 52-0556948 2 Check the Appropriate Box if a Member of a Group NOT APPLICABLE 3 SEC Use Only ______________________________ 4 Citizenship or Place of Organization MARYLAND Number of Shares Beneficially Owned by Each Reporting Person With 5 Sole Voting Power* 1,738,340 6 Shared Voting Power* -0- 7 Sole Dispositive Power* 10,564,542 8 Shared Dispositive Power]

WUBA [58.com] SC 13G/A: (Original Filing)

[2. Check the Appropriate Box if a Member of a Group (See Instructions): 3. 4. Citizenship or Place of Organization: Number of Shares Beneficially Owned by Each Reporting Person With 5. Sole Voting Power: 0 6. Shared Voting Power: 0 7. Sole Dispositive Power: 0 8. Shared Dispositive Power: 0 9. Aggregate Amount Beneficially Owned by Each Reporting Person: 10.]

WUBA [58.com] SC 13G/A: 2. Check the Appropriate Box if a Member

[2. Check the Appropriate Box if a Member of a Group (See Instructions): 3. 4. Citizenship or Place of Organization: Number of Shares Beneficially Owned by Each Reporting Person With 5. Sole Voting Power: 0 6. Shared Voting Power: 0 7. Sole Dispositive Power: 0 8. Shared Dispositive Power: 0 9. Aggregate Amount Beneficially Owned by Each Reporting Person: 10.]

WUBA [58.com] SC 13G/A: (Original Filing)

[SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON BlueRun Ventures IV, L.P. (“BlueRun IV”) 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* ¨ x (a) 3 SEC USE ONLY 4 CITIZENSHIP OR PLACE OF ORGANIZATION Cayman Islands NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH 5 SOLE VOTING POWER 11,126,264 shares, except that BRV Partners]

WUBA [58.com] SC 13G/A: SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

[SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON BlueRun Ventures IV, L.P. (“BlueRun IV”) 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* ¨ x (a) 3 SEC USE ONLY 4 CITIZENSHIP OR PLACE OF ORGANIZATION Cayman Islands NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH 5 SOLE VOTING POWER 11,126,264 shares, except that BRV Partners]

QUNR [Qunar Cayman Islands] SC 13G/A: (Original Filing)

[2. Check the Appropriate Box if a Member of a Group (See Instructions): 3. 4. Citizenship or Place of Organization: Number of Shares Beneficially Owned by Each Reporting Person With 5. Sole Voting Power: 0 6. Shared Voting Power: 0 7. Sole Dispositive Power: 0 8. Shared Dispositive Power: 0 9. Aggregate Amount Beneficially Owned by Each Reporting Person: 10.]

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