What does it mean to meet the world of mortals?

Expressed the impermanence and fleeting fate of life. "The world of mortals" refers to the hustle and bustle and secular desires in the world. "Separation" is used by practitioners to describe the process of getting rid of secular bondage and pursuing extraordinary realm. One thought is an important concept in Buddhism, which refers to the instantaneous change of mind, that is, the change of mood can affect a person's future.