If you are Li Hua and now live on the future Mars, your American pen pal Stephen will write to you, because it is too hot during the day and too cold at night. ...

If you travel around the world alone, what will you bring as your partner? Is it a book, a radio, a music box or a piano? It seems difficult to make a choice. If you ask me, I will definitely tell you without hesitation: "I will choose a book." A pen? I heard someone sigh: you can bring a lot of interesting things around the world by yourself. Why did you bring a pen? To this, my answer is: Yes, I want to travel around the world with a pen. You don't like pens, do you? You don't want to meet your friends because you have already met them, don't you? A pen you like is your friend, and it will always accompany you. So I am willing to travel around the world with a pen. If I travel around the world, I will find many interesting and strange things. When these things happen, we should feel them with our hearts. At this time, we should write these things down and tell your heart with a pen. If you are blowing the sea breeze, if you are in a tropical fish forest, if you are on a magnificent mountain in ............, you can use a pen to tell the blue of the sea, the air of animals and the magnificence of mountains. You must have written a diary. When ........................ returns home, open the pages and savor it slowly. You will be surprised. You will recall the experience of the trip in your mind, and you will feel how meaningful and valuable this trip is. The pen is your relative, and you can talk to him about psychology anytime and anywhere.