Read then (改：ten) thousand books, travel ten thousand miles.（段评：作为文章开头,引用古语很有新意,但存在两处明显的拼写错误,影响了句子的正确性。修改版：Read ten thousand books,travel ten thousand miles.）

Read then thousand books, travel ten thousand miles. Last summer, I went to Xi'an with my family.（段评：这段自然地引出了旅行经历,但存在重复引用古语的问题,使段落显得冗余。修改版：Last summer,I went to Xi'an with my family.）

We visited old places there. It helped me learn more about local history. We saw old walls and ate nice food. I made new friends in this trip (改：during this trip) . I was very happy in this trip (改：during this trip) and learned a lot.（段评：这段描述了旅行的具体内容,表达清晰。但可以优化两点:1. 词汇表达可以更丰富,如用"historical sites"替代"old places"；2. 可以添加连接词使句子间的逻辑更连贯。修改版：We visited many historical sites there,which helped me learn more about local history. We saw ancient city walls and enjoyed delicious local food. In addition,I made new friends during the trip. I was very happy and learned a lot.）

Travel brings me many good lessons. Let's go out to travel and learn new knowledge together.（段评：作为结尾,点明了旅行的意义,呼应了开头。但可以将"good lessons"改为更具体的"valuable experiences",使表达更准确。修改版：Travel brings me many valuable experiences. Let's go out to travel and learn new knowledge together.）