What's the name of the spherical instrument used by Abe Harumi in Yin and Yang Master?

Liu Ren was very popular in Han Dynasty, which was a divination based on the theory of Yin-Yang and Five Elements. Among the five elements of water, fire, wood, gold and earth, water is the first; In the ten days of A, B, C, D, E, J, G, Xin, Ren and Gui, Ren and Gui belong to water, Yang is the water of Ren, Yin is the water of Gui, and Yang is taken from Yin, hence the name "Ren"; Among the sixty Jiazi, there are six people, namely, Ren, Wu, Ren Zi, hence the name. At that time, people created a tool for divination of the Sixth Master, that is, the Sixth Master's Plate. In modern archaeology, Liuyepan has been unearthed many times, and there are still seven. The six-ring disk is divided into two parts: the sky disk and the site. In the round place, the sky disk is embedded in the field, and there is a shaft in it that can rotate freely.

-It was invented by China. -Oh.