You maybe know "The Silence of the Lambs" of movie, that movie describe the mad of cannibalism.
But ancestor of mankind Neanderthal was doing it.
Every people inherit the blood of that.
It's not mad thing, no, it's nature.
Ok I'll eat man :-)
That is joke, but Chinese who lives in interior have the custom of eating mankind now.
I heard it from friend who is going to study to Shanghai.