Japanese, of course. You Chinese need to give up the proud notion that your language is particularly difficult for English speakers. It isn't! So there!

As a spoken language Mandarin is maybe one of the most easy languages. Very few words Very simple grammar Times are easy to form Words do not inflect Specially inflection can make a language difficult and the total lack thereof is a big relieve. This said, the written language is difficult. But still easier then i.e. Cantonese where the written languages does not match the spoken language well.

i think they are both hard to learn, lol but japanese does seem to a bit more difficult.

well~i just want to be modest....i just want to konw the difficult culture of different country and make friends with others.as my english is also very poor~^0^~