[21Vianet Group, Inc. Announces Issuance of RMB1.75 Billion Convertible Bonds by its main operating entity BEIJING, April 29, 2016 (GLOBE NEWSWIRE) — 21Vianet Group, Inc. (Nasdaq:VNET) (“21Vianet” or the “Company”), a leading carrier-neutral internet data center services provider in China, today announced that Beijing Yiyun Network Technology Co., Ltd. (“Beijing Yiyun”), a various interest entity of the Company and the] [21Vianet Group, Inc. Terry Wang Chief Financial Officer — Press Release 6-K 1 d177836d6k.htm FORM 6-K]