If an immigrant conducts a violent crime in China, then he can expect his anus to be wrecked inside some of the detention facilities.
Doubt that. Asians have a slightly more different MO than that in my experience. He won't be lucky enough to get to prison. They're probably going to literally rip him to shreds then and there in the street where they catch him. Nothing but a mass of blood and gore will remain of his body.
That is quite possible. Still, I was referring to a scenario in which the offender manages to surrender himself in a police station, before the lynch mob could get hold of him. Fortunately for the oriental nations, political correctness is not very prevalent. Also, they don't have to worry about the "white guilt", since they are not Caucasian.