Things are divided into yin and yang. Yin, what cannot be seen, is called dark matter; Yang, what can be seen, is called bright matter.
Human beings are also composed of yin and yang, yin is called the spirit, and yang is called the body.
Those who have souls but no bodies are said to have souls that are wandering, misty, weightless and unseen by strangers.
Those who have a body but no spirit are called zombies. They are ignorant, staggering, and the world is crazy.
People in this world must be harmonious in body and spirit to stay safe and sound. A weak spirit leads to insanity, a weak body leads to illness.
When a person dies, yin and yang are separated, and the spiritual body is separated. The spirit can be stored in a dark place for seventy-seven forty-nine days, and the body in a coffin can be stored for ninety-nine and eighty-one days.
