During the research period in the United States, whatbenefited me most was English. The whole English communication environmentimprove my oral English a lot. I was lucky enough to participate in theresearch activities in the United States. This trip made me realize that Istill have so many things to know and learn. Knowledge can be learned in books,but experience and vision can not be learned in textbooks. Reading thousands ofbooks also requires traveling tens of thousands of miles. Thanks for my trip tothe United States to broaden my horizon and mind, I will also make use of thistrip to apply the way of thinking and handling of different cultures to mystudy and life.