Gossip is an esoteric concept of ancient Chinese culture . Ancient times,Fuxi summed up the observation of the world by using a symbol of Yin and Yang. Eight diagrams represent the Yin-Yang system of things'own changes. They use "-" to represent Yang and "- -" to represent Yin. With these two symbols, eight different forms are formed according to the parallel combination of Yin-Yang changes in nature. They are called Eight Diagrams. According to the theory of the Book of Changes , almost everything in the world has one Yin and one yang, just as if modern computer software is made up of 01. The Eight Diagrams are actually the earliest written symbols. The birth of the Eight Diagrams laid a good foundation for Cangjie's writing.