Taoist Master of Yin and Yang

As the saying goes, nothing is entirely true or false. This isn't superstition: believe and it exists, don't believe and it doesn't. Demons and ghosts are all in the heart. The story is set in modern times, in this century, when there is no longer a Lin Zhengying. There is Mr. Zheng. This story is adapted from real events and combined with some events that aren't real.