2 supporting facts on its censorship:
1. WeChat will notify you it “contains restricted words” if you include “Falun Gong“ in your message:
http://thenextweb.com/asia/2013/01/11/tencents-wechat-comes-...
2. WeChat just deleted 3 weeks ago at least 30 popular accounts that distributed political and legal news articles http://online.wsj.com/news/articles/SB1000142405270230373080...