My pen friend is a soldier. He often told something about his army. I was very interested in it. I also told him something about my school. He often encouraged me to work hard.

我的笔友是一个军人，他经常向我介绍军队的一些事情，我很感兴趣，有时我告诉他我学校的情况。他经常鼓励我要好好学习。