Bring a book you like, preferably one you want to read again and again after reading it for the first time. Because, if you just read the book review, or listen to the introduction of others, and go out of town with an unread book, it is too late to regret it. On the premise of liking, I think the prose collection is more suitable for going out to read, or I can take it out one by one. In addition, I usually put a layer of leather on my schoolbag before going on a trip, but even so, I may get my book dirty and wrinkled during the trip, which should be considered in advance. When I went abroad for the first time, I died with a living, green leather train and the Internet, and recounted the modern history of China. Last Spring Festival, I went to Hainan to play with my friends, with "leisure worries". For some reasons, we traveled back and forth between Haikou and Sanya many times. Every time I read this book, my friends opposite me are reading books in ML language, and I remember it clearly.