what is the differences btween the chinese languages of mandarin,cantonese,fujian and taiwanese.
and are there still any similarities exist from all of those languages?

Question

Answer

Cantonese is much more similar as the classical oral chinese in ancient, while mandarin is the from the Manchow district in the north. Cantonese has many ancient gramma and vocabulary~
The pronunciation between Mandarin and Cantonese is hugely different~
The people from north can't understand anywords in cantonese and treat it as a foreign language~