VNET [21Vianet] SC 13G/A: 1. NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS.
[1. NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Kylin Offshore Master Fund Ltd. 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) [ ] (b) [ ] 3. SEC USE ONLY 4.]