假如你是李华，你校即将举行一年一度的“校园书市 (a campus book fair)”活动，其目的是给同学们提供一个交换、利用图书的机会。请你用英语写信给你的加拿大笔友Mike, 介绍此次活动的有关情况。内容应包括：
1. 活动目的；
2. 活动内容：买书，卖书，交换图书;
3. 活动意义。
Dear Mike,
How are you doing these days?
_______________________________________________________________________________
Yours,
Li Hua
Dear Mike,
How are you doing these days?
Aimed at providing a platform where students can have a chance to exchange and make use of their books, the annual campus book fair will soon be held in our school. The fair will attract a huge crowd from the entire school, who are to sell, purchase and exchange their second-hand books with their peers.
As a regular visitor, I’ve found myself increasingly attracted by the fair. For one thing, the fair exhibits books of hundreds of types on diverse topics, motivating us to further develop our reading habits and help to broaden our horizons. For another, most books are sold at a lower price than what the bookstores offer.
Please let me know if you have any suggestions on how to host such a book fair better.
Yours,
Li Hua