>>280736133
I was double checking the line in the second panel and I noticed that in the Japanese, the manga is more specific. The term translated as "exorcist" is 陰陽師 or onmyouji. This literally means yin-and-yang master, so obviously it is in some ways tied to China, hence the compass and the specification that it is from this country.

Onmyodo comes up a lot more in Mao.