There is a fortune teller who knows what you have by looking at rice and is very accurate. What is this teaching method of fortune telling?

This fortune-telling method is called "Miruole", which means I don't know, and I can't find out who invented this rice account in the first place. This kind of rice account fortune-telling has existed since ancient times, mainly spreading in places where Zhuang people live in Guangxi Zhuang Autonomous Region and counties where Zhuang people live in Yunnan, Guangdong Province.