When the Rain Falls and the Wind Rises, People Beg to Let Go

The first part of "The Rain Falls and the Wind Rises", passers-by begged to be spared. Tian Tian is an ordinary person. I have never done anything bad in my life. After his death, he was selected by the underworld prime minister and became a public official. Go to different worlds as passers-by, But why do we always meet some strange people? (Passers-by also have their own lives.)