In terms of characters, it is said that Fu Xi made eight trigrams and Cangjie made characters. Oracle bone inscriptions were discovered at the end of the 19th century, and earlier characters such as Gaoyou pottery inscriptions were found in recent years. In early China, there was a tradition of worshipping heaven and ancestors, paying attention to human ethics. From the Tang and Yu dynasties to the Xia, Shang and Wednesday dynasties, when the state was established, emperors and princes ruled separately. The late Zhou Dynasty entered the spring and Autumn period and the Warring States period, resulting in hundreds of schools of thought. After the Han Dynasty, it became a Confucian society and became an important element of Chinese culture.