In a word, you can think of him as the Republic of China version of "The Strange Stories of Chang'an"
In the early years of the Republic of China, the phenomenon of strange forces and chaos was not superstition, but a "case to be handled."
Zhao Chiheng took over a strange yamen - Beiyang Jingyu Institute, specializing in investigating evil things that cannot be explained by science.
His subordinates are a group of weirdos: an engineer who came back from studying abroad and firmly believes that everything can be solved by formula; an old antique left over from the Qing Dynasty who is full of Feng Shui secrets; an archivist with a photographic memory; and a woman from the world with strange skills and a mysterious origin.