I met an expert among the people by chance, and I am old and retired. Eighty-two percent, he has the seal of Xuantang and a long beard, so he is a Taoist. Self-study among the people, why should I stop? ! Knowing the yin and yang, knowing the Eight Diagrams, and knowing the three realms of heaven and earth, this is what a master is. I wanted to try it, but suddenly I saw someone floating in the air. It was vaguely visible at first, but then it arrived within a few minutes. Real people too. Men and women, young and old, elders and children, came in droves, and everyone laughed at them. We are the same people in this world, so what does it mean to exist? !