What happen to the Chinese in Africa now ?

These ching chang chongs got banged in the face hard and was forced to leave Africa that's what happened. Big Jamaican ting here.

South Africa is  one of those  violent if not the most  violent country on this Earth.Had the original people of South Africa  the khoi san were only there it would be more  peaceful, but the Bantu  from West Africa  are  causing all the  trouble and thats who the American blacks  come from.As  far  Egypt is concerned they are  not black  so don't put them in the same basket  as the west  african bantu

Look at what Black do to whites in South-Africa.

why do they attack?

Regardless of what you hear (I'd say "read", but you probably can't do that well), Asians and Blacks get along quite fine in the US and Canada.

China tends to invest heavily in Afrika.  It seems unlikely that they would be hated on there, or that they'd be in a vulnerable position.  It's not the case that Afrikans are uncivilised, plus it's a whole continent with fifty-four countries and countless nations in it, so where are you talking about? Senegal?  Botswana? Egypt?

Nothing much, China is pretty powerful in Africa, it's more scary what happens to every other nationality in China though.