just like family. don't deny the problem. I think send back

to China is a very bad idea. I am sure when your son back here, this problem will be worse. get help or if you don't want the help in record, get a private Dr. like all the rich family did($50-100/visit/week). By the way in US, if your teenage kid broken family property and threaten you, you need call the police sos. don't treat this kind problem lightly.