What does it mean to wander between yin and yang?

Hello, what do you mean by wandering between yin and yang? Generally speaking, the space where human beings live is called the dead room. After the death of human beings, the space where their souls are located is called the underworld, and the yin and yang of the space constitute the whole universe. It's a metaphor for walking around a place, for being indecisive and always worried about danger.