答案：Dear Tom,
How is it going? I'm glad to share something about my hobby with you. My hobby is reading books. I usually read books in my room for an hour every evening. Sometimes I also read in the school library on weekends. Reading helps me a lot. It not only makes me learn a lot of knowledge but also makes me relaxed. When I read, I can forget all my worries. I think reading is a good way to improve myself.
I'm looking forward to hearing from you.
Best regards,
Li Hua
解析：首先点明爱好是读书，然后说明时间（每晚一小时、周末图书馆）和地点，接着阐述读书的帮助（获取知识、放松、忘记烦恼、提升自己），符合要点要求，语意连贯，词数达标。