Ni hao comrade!
I will be in China and Hong Kong during much of May 2013. Due to the Great Firewall, chat and messages (i.e. Gmail and Facebook) are often difficult to use. As a replacement, I will in all likelihood be using CryptoCat, which can be found here: Crypto.cat.
The specific conversation name (chatroom) will probably be: S8YEx31Xu3QDJ0qK
iMessages may also work.