This is the first complete expression of the characteristics of Chinese civilization, and a scientific summary of the process and historical experience of over 5000 years of Chinese civilization. One of the goals of the 20 year "Exploring the Source of Chinese Civilization Project" is to study the formation process of the diversified and integrated pattern of Chinese civilization centered and led by the Central Plains region, which is to study the origin and development of the unity of Chinese civilization. Throughout the historical process of Chinese civilization, although there are divisions, combinations, and twists and turns in the process, the unity of the country has always been the main line of development from diversity to unity. This trend was not formed after the unification of China by Emperor Qin Shihuang. During the prehistoric period thousands of years ago, various regions had already had exchanges, learned from each other, and developed together. Integration has a deep and solid foundation and a long history. 1. The prehistoric foundation of the unity of Chinese civilization. 1. From 10000 to 7000 years ago, the communication between various regions on the Chinese continent was 9000 years ago. The cultivation techniques of rice, which appeared in the middle and lower reaches of the Yangtze River about 10000 years ago, were absorbed by the prehistoric ancestors of the Huai River basin. The Jiahu settlement site in Wuyang, Henan Province unearthed agricultural and handicraft production tools made of carbonized rice, stone, and bone. The millet and millet cultivation techniques invented 10000 years ago in North China have also spread to surrounding areas. Afterwards, agriculture gradually developed, the population gradually increased, people's spiritual lives became increasingly rich, people's ability to move around became stronger, and communication between different regions became increasingly active. The Xinglongwa culture, which was distributed in the western region of Northeast China over 8000 years ago, has been able to produce more exquisite combinations of jade ornaments - jade rings and strip shaped jade pendants. It is worth noting that similar combinations of jade rings and jade pendants can also be seen in the later Hemudu culture in the lower reaches of the Yangtze River. The appearance of jade rings with the same shape and combination with jade pendants in the north and south of China should be a reflection of the exchange of prehistoric cultures in different regions. In the Xinglongwa culture, there are decorations adorned with strings of clam shells from the Yellow Sea area, indicating the existence of communication between people in inland and coastal areas. The exchange of prehistoric cultures seven to eight thousand years ago can be seen more clearly in pottery. In the prehistoric culture dating back 8000 years in the middle reaches of the Yangtze River, pottery from the Jiahu culture in the upper reaches of the Huai River and the cross lake bridge culture in the lower reaches of the Yangtze River can be seen. A 5.8 meter long canoe dating back over 8000 years was unearthed at the Xiaoshan Cross Lake Bridge site in the lower reaches of the Yangtze River in Zhejiang, indicating that people at that time had the ability to navigate over long distances and expanded the scope of communication. 2. From 6000 to 4000 years ago, the cultural convergence of the Chinese land intensified. Over 6000 years ago, the belief in dragons emerged in the middle reaches of the Yellow River. In a Yangshao culture tomb discovered at the Xishuipo Site in Puyang, Henan Province, the images of dragons and tigers were piled up on both sides of the bones with clam shells, which were consistent with the orientation of the four gods of the Han Dynasty, the Middle East Qinglong and the West Baihu, or indicating that the thought of the four gods has a long prehistoric origin. In the Liaohe River, 5500-5300 years ago