VNET [21Vianet] SC 13G/A: Joint Filing Agreement 13d-1(k) In accordance with Rule
[Joint Filing Agreement 13d-1(k) In accordance with Rule [Remainder of this page has been left intentionally blank.] 16 Sheng Chen Sheng Chen Fast Horse Technology Limited Sheng Chen Director Sunrise Corporate Holding Ltd. Sheng Chen Director Personal Group Limited Sheng Chen Director Beacon Capital ]