The English-language website of the Central Military Commission of the People’s Liberation Army (http://english.pladaily.com.cn) often posts pictures of ships, but usually with only a simple identification.
Case in point:
A quick look through Combat Fleets reveals this is a Houxin-class PTG. The missile cannisters at the stern are for C-801/CSS-N-4 SARDINE ASCM. The article states it is part of the South Sea Fleet