回复：帮国内的朋友请教加国的朋友，谢谢先！

Should find out first if that guy is really going through a divorce case. With the guy's name, address should be able to find the case number from local court. If true, then the 2nd marriage should be void. Get relevant documents and get clean in China. There is nothing your friend can claim. Let go, it's better to find out earlier.