There is a saying in Chinese history that "Fuxi painted hexagrams and King Wen performed changes", but later generations ignored that how Fuxi painted hexagrams and what kind of thinking system they expressed so as for King Wen of Zhou deducing The Book of Changes according to "Fuxi painted hexagrams", and then expounding the Chinese traditional humanistic philosophy. More than 9000 years ago, at the beginning of China's agricultural civilization, in the Yangtze River basin where there were no words, Fuxi arranged the divinatory symbols according to the "double addition method" and expounded China's oldest and most brilliant natural philosophy which even became the root of Chinese national culture. This book attempts to explore how the ancestor Fuxi invented the symbol and arranged 64 divinatory symbols in the way of "double addition", and that the way of arranging divinatory symbols in the form of symbol is completely in line with the expression form of modern "binary", which deduces the unique and incredible great wisdom of mankind.