Personally, there are three reasons: nationality, population and culture.

First, the Chinese nation is a self-reliant, bloody and indomitable nation in the world.

In the long historical process, in the harsh natural environment and the living environment of multi-ethnic competition, the self-reliant and indomitable Chinese nation and its national characteristics have gradually formed. During the period of national prosperity, successive kings opened up a broad living space for the nation and future generations. In the anti-aggression period when foreign enemies invaded, national heroes stepped forward and led the people to persevere and resist aggression. In the backward period, the national elites made suggestions and suggestions for national rejuvenation, and the waves were higher than the waves. This nation is rooted in the blood of everyone in China, which is a national blood and a natural sense of national mission.

Objectively speaking, the geographical environment of China is the most complicated and the worst. China has various complex landforms such as deserts, plateaus, valleys, basins, plains, forests and coasts. And has been in the intrusion and aggression of ethnic groups at home and abroad. It is the ingenuity of the ancestors of the Chinese nation that constantly expanded its territory eastward, southward and westward to the sea, westward to deserts and plateaus, and northward to Gobi and grasslands, which led to today's geographical space and strategic depth. This geographical condition is not natural. Moreover, it is the first time to put forward a hierarchical management structure for the long-term stability of the territory of the "China" country, in which the central kingdom of the vassal state sanitation emperor and the emperor kingdom lead all countries, moving restless ethnic groups to the outer layer, and using these fierce ethnic groups to subdue the more peripheral foreign countries and make them submit. By controlling foreigners with foreigners, controlling foreigners with China, changing foreigners with summer, and assimilating "foreign land" with advanced culture, it will be accepted by Chinese civilization and gradually integrated.

Second, the Chinese nation has always maintained the absolute population of the world.

The Chinese nation has always regarded population reproduction, life inheritance and national inheritance as the top priority. From the king to the common people, "there are three kinds of unfilial, and the last one is the biggest." Since ancient times, the Chinese nation has attached importance to the bloodline inheritance of the country, family and race. In addition, the population with absolute advantage naturally occupies a dominant position and natural advantage in national integration and human race continuation.

3. Chinese civilization has a long and profound Chinese culture, and its unique cohesion, advancement and openness have made the Chinese nation among the advanced countries in the world for a long time.

Chinese civilization, that is, Chinese civilization, is one of the most advanced civilizations in the world, which has nurtured advanced Chinese culture in a long history. The legendary Book of Hutuluo is the source of China culture. Chinese civilization has gone through five stages: Sun Sacrifice, Yin and Yang Hundred Schools, Confucian Etiquette, National Integration, Democracy and Rule of Law. Thus produced the rich cultural connotation of Chinese civilization. Chinese culture is a civilization and oriental culture with natural harmony, harmony between man and nature, dialectics of yin and yang, etiquette and morality, unity and unity, openness, democracy and legal system, and unremitting self-improvement. The ancients in China put forward the idea that "a gentleman strives for self-improvement" by observing the movement and changes of celestial bodies in the universe. Self-improvement includes national self-improvement and individual self-improvement. It is the true spirit of the Chinese nation not to be afraid of difficulties and hardships and not to yield to any oppressor. A history of the development of the Chinese nation is a history of continuous self-improvement, struggle against the living environment and internal and external evil forces. The national spirit of self-improvement of the Chinese nation is the backbone of Chinese culture and the driving force for the Chinese nation to advance. The Chinese nation is patriotic. Patriotism is an excellent cultural tradition of Chinese civilization, which enables the Chinese nation to fight for the future of the country and the nation at the critical moment of life and death.

The most core and essential core culture of China culture is "Taoism is natural"! It is the survival law of the Chinese nation born from ancient times, from the survival and development of ancient human beings on the earth, and from the unknown exploration of the universe and nature by human beings. China people constantly explore and master the natural laws of the universe, follow the example of Heaven, and apply the natural laws of the universe to governing the country, maintaining self-cultivation, preserving health and treating diseases, and pay attention to the "harmony between man and nature". Moreover, successive dynasties followed orthodoxy and put heaven and earth, the right path and human virtue in the first place. Heaven, justice and morality are the first activities of human civilization in China. China people should be moral and orthodox in everything they do. Follow the Confucian moral thought of "benevolence, righteousness, courtesy, wisdom, faith, forgiveness, loyalty, filial piety and sadness" and the new socialist moral trend. The Taoism with benevolence as the core and "harmony is the most precious" is naturally the essential core of Chinese civilization created by the Chinese nation, striving for self-improvement, unity and cohesion, and forging ahead! The Chinese nation has closely linked human beings with the earth, the sun, celestial bodies and the universe, with all relations of production such as society, the state, families and individuals, with all productive forces such as the rules of the universe, natural sciences, science and technology and human strength, and has formed a Chinese cultural system that is integrated with Chinese civilization. This advanced cultural system enables the Chinese nation to unite and strengthen itself, and enables the Chinese civilization to be passed on and continued without interruption! ! ! This has transcended the geographical environment, transcended the race, transcended the country, and even transcended the differences between different cultures. It is inclusive and takes advantage of each other. The long-term assimilation of backward civilization by the world's leading advanced culture has enhanced this capacity.

Besides, Chinese civilization has developed the concepts of "China", "China" and "Great Unity" on the basis of Taoism and natural culture. In the ancient Xia, Shang and Zhou Dynasties, it was called "China" from the beginning. It is a great country of the central government, a kingdom of kingship and a kingdom of emperors, surrounded by princes and princes such as Zhu Xia, and foreigners such as Siyi live in the remote wilderness around China. In the Qin Dynasty, Qin Shihuang unified the six countries, taking the territory of the seven countries as the boundary, and called it "China", which meant the complete unification of "China", and called it "Huaxia" nation for the people of the seven countries, so as to distinguish it from the Yi people. In the Western Han Dynasty, the Huns collectively referred to the Chinese people in China as "Han people". Zuo Zhuan: "I don't want summer, I don't want China chaos." During the Qin and Han Dynasties, "those who committed crimes against China will be punished far away." Wu Ji of the Tang Dynasty wrote in Shu Fa: "Han people, China also. I was taught by the king and belonged to China. Dressed in dignity and accustomed to filial piety, it is called China. " This means that all administrative divisions and cultural systems belonging to China are called China. Emperor Zhu Yuanzhang's Imperial Decree of the Central Plains: "Since ancient times, emperors have ruled the world, living in China to control foreigners and living abroad to serve China. It is unheard of for Yidi to live in China and control the world. Since Song moved, Yuan entered China, and within four seas, he failed to submit. At this time, the fate of heaven is circulating, and the Central Plains is full of vitality, one trillion trillion trillion. Saints were born, Land Rover was expelled, China was restored and Chen Ji was established to help the people. Cover my people in China, and God will order my people in China to live in peace. What can I do to cure them? " China refers to the land where the Chinese nation has been living, and it is also the land laid by successive dynasties in China. It can be said that the concept of national unity is deeply rooted in the hearts of everyone in the Chinese nation.

Therefore, it is the characteristic of the Chinese nation, the absolute population and the cultural core of Chinese civilization. With its unique cohesion, advancement and openness, Chinese civilization has become the only ancient civilization in the world that has never been interrupted and continues to this day!