It is hinted in the cutscene, the last frame shows him lolled over to one side, unconscious/dead (this doesn't always appear though, like the last line of A Rude Awakening). The mission replay description is as follows:
Xin pulled off his big shot job, but got himself shot in the process.
I had all kinds of fun trying to lose the law and get him out of there - underwear day at the laundrette is gonna be even more fun now.
The kid was delirious, turned out he was Ling's brother, and he figured on killing me to avenge her.
Stupid kid lost too much blood... there was nothing I could do but watch him die.
That last line seems pretty clear in saying he's dead. --Bluesboyjr 18:17, May 9, 2010 (UTC)