After traveling through time, Lin Wanrong discovered that although the Tang Dynasty appeared to be as recorded in history, there were "practitioners" secretly there. They can't fly to the sky and escape from the earth, but they can make alchemy, draw talismans, astrology, feng shui, and can use some kind of "spiritual energy of heaven and earth" to exert weak supernatural powers. The most deceiving thing is - all of this can be explained by physics!
