I have become accustomed to seeing the sun rise in the east and set in the west, the moon waxing and waning, the warmth and coldness of spring, summer, autumn and winter, and the changes of all things in the world. However, it is difficult to look down upon the joys and sorrows of the world, love and hatred, and it is even harder to ignore sadness and sadness. Light clouds. After many years of changes, I became happy as a habit, and I found that my happiness infected many people. When people ask me why, I just say: happiness is a habit!