He emphasized that "the unity of Chinese civilization fundamentally determines the integration of various ethnic cultures of the Chinese nation, and the firm cohesion even in the face of major setbacks. It determines the common belief that the land cannot be separated, the country cannot be chaotic, the nation cannot be separated, and the civilization cannot be interrupted. It determines that national unity will always be the core of China's core interests, and that a strong and unified country is the fate of all ethnic groups.". In the long history of the Chinese nation for over 5000 years, Chinese civilization has gradually formed a unified tradition of nine provinces coexisting and diverse integration. From the Book of Songs, which states that "under the Pu sky, there is no royal soil" and the Gongyang Biography, which states that "what does it mean to be in the first lunar month of the king?" to the Mencius, which states that "the world is unified" and the Xunzi, which states that "the world is unified", to Dong Zhongshu, who states that "the unity of heaven and earth is a constant scripture, and the ancient and modern friendship", all reflect the genes of Chinese culture's pursuit of unity. As early as the pre Qin period, China gradually formed an integrated pattern with Yan, Huang, and Hua Xia as the core, and the people of the five directions sharing the world. During the Xia, Shang, and Zhou dynasties, effective measures such as "family and world" and the system of enfeoffment were taken to maintain the unity of political power. Cultural exchanges and interactions were established between different regions, and Chinese civilization entered an early stage of development, laying the foundation for the formation and development of the tradition of diversity and unity. After the Qin Dynasty conquered the six states and established a unified Qin Dynasty, a highly centralized centralized system was established, implementing the principle of "books and literature, vehicles and tracks, quantity and balance, and conduct and ethics". This marked the beginning of the development process of China's unified multi-ethnic country, promoting frequent economic exchanges, promoting cultural exchange and integration, and gradually integrating various regions and ethnic cultures into one, forming a diverse and integrated cultural pattern. Chinese civilization has initially taken the embryonic form of great unity. Since then, national unity has always been the mainstream of history, from the unification of the Han Dynasty's "Six Contract Style, Nine Provinces Together" to the Sui and Tang Dynasties