C'on,
It's obvious by now that gaoxing is a hideous troll that is so bored with his life that he has to get his kicks by provoking the expat community with his inflammatory remarks.
Take a page from the dog training manual. Do not reward him with the attention he seeks for his misbehavior, it only reinforces his bad behavior. Instead, ignore him and reward him with praise only when he shows the proper behavior.
I having been biting my tongue and have not responded to any of his postings and I urge everyone to do the same. I'm sure after a period of being shunned he would get bored and finally go wherever it is he wants to go.
Cheers~