I believe in the 50-percent theory. Half the time things are better than normal; the other half, they are worse. I believe life is a pendulum（钟摆） swing. It takes time and experience to understand what normal is, and that gives me the pe

I believe in the "50-percent theory". Half the time things are better than normal; the other half, they are worse. I believe life is a pendulum（钟摆） swing. It takes time and experience to understand what normal is, and that gives me the