In my view, the most challenging issue is language .Language is a big problem, which not only contains the daily speaking and writing but also the dialect and the special usage. Besides, my current vocabulary is very small. And my English level for all the four aspects of "writing, reading, listening, and speaking" cannot reach the requirement of going abroad. So I make a detailed plan, memorize 20 TOEFL words every day, watching at least 20 minutes of English audio or video, doing the TOEFL model test to improve my English ability in all aspects.