Sabotage on Flight From China?

A Cathay Pacific flight from shanghai was grounded when the plane filled with smoke. It could have been an act of sabotage, or perhaps the fallout from dumbass Chinese dude removing their socks like they always do on airplanes.
while Id like to think it the former, I am betting on the latter. Why do people from China actlike toddlers? Five thousand years of historya.d still no culture…