はじめまして、みんな、わたしわChangyao　Chen（陈常尧） です、だいがくいんせんです、ちゅうごくじんです。おさきに　しつれいします。

Hi there, I'm Changyao China from China, in my 3rd year as a phd student at Columbia University. I tried to keep myself busy and learn something new, and that's why I choose Japanese, it really takes a loooot of time, memorizing all the phrases and words， and it's not so easy when you're getting older... がんばれ！