Dr. Dai Chenzhi: The length of life is given by God, and the width is created by oneself.

We cannot change the length of life, but we can change the width of life;

We cannot change the weather, but we can control our mood;

We cannot We can change our appearance, but we can show a smile;

We cannot change our height, but we can control our weight;

We can not be beautiful, but we must live a beautiful life!