Living People's Evil Deeds

According to legend, there is a special kind of person in the world, called the Living Yin Chai. This type of person eats food from the upper world, but does things in the underworld. He can travel between the yin and yang worlds and communicate with the souls of the dead. They are commonly known as people who walk in the underworld. The Yin people must keep their virginity throughout their lives. Moreover, their life span is extremely short and it is extremely difficult for them to live beyond the age of 40! As for me, my destiny is extremely yin. If I don't become a yin person, I am destined to be no more than 18 years old...