Eight things and natural phenomena symbolizing "heaven, earth, thunder, wind, water, fire, mountains and mountains" symbolize the change and cycle of the world. The classification method is like the five elements, everything in the world can be classified as gossip, which is also the ancient ancestor of binary system and electronic computer.
The source of gossip, in the handed down literature, first came from Shao Yong in the Song Dynasty, and later Zhu's Book of Changes adopted Shao Zi's picture to spread it. Later, other scholars drew other gossip.
Extended information: Eight Diagrams originated from the ancient river map and Luoshu in China, and Fuxi made them according to two star maps created by Suiren. Among them, the river map evolved into innate gossip, and Luo Shu evolved into the acquired gossip.
Bagua was first created by Fuxi according to two astrolabe calendars created by Suiren. It is located in Guadi Village, Hongdong, because this village is surrounded by mountains, and there are eight villages around it, all separated by eight miles, which looks like the bottom of a six-pointed star. Fuxi used divination in landscape painting, so he created gossip. This picture was developed by Zhou Wenwang on the basis of the gossip created by Fuxi. Bagua Map is located on the central axis of Hong Tong Huaishu Scenic Area, which means "taking root in Hong Tong".
Reference source: Baidu Encyclopedia-Bagua Map