Personally, I think that Asian civilization radiates around China, such as Japan, South Korea and small countries around Indochina Peninsula, all of which are influenced by China. The barrier of Himalayas makes India's development relatively independent, but at least it communicates with China through Buddhism. There are many nationalities in the Middle East, and there are many chaos and conflicts. Later, the rise of Islam was somewhat stabilized through spiritual unity. As for African civilization, only Egypt north of the Sahara desert is discussed. The four ancient civilizations are all in Asia and Africa, and both Egypt and China are agricultural civilizations. However, compared with Egypt, China is too small to be influenced by its civilization, and it is less likely to be assimilated by foreign countries after being invaded, and it is too close to many western civilization centers with heavy sea power thoughts, such as Rome and Greece. Because these ethnic groups attach importance to commerce, businessmen often run, and they are very expansive, unlike farming, so Egypt failed to assimilate foreigners in Persia, Alexandria, Rome, Caesar, and later Arab Islamic invasions, but was destroyed by itself. Fortunately, China was able to sinicize it in all previous foreign invasions. Because of the wide radiation of civilization, it was not interrupted during the period of foreign rule, and Egyptian hieroglyphics were not mature enough in China. Unfortunately, there was no written language handed down during the period of foreign rule, and the media that enabled information transmission to transcend time and space restrictions was only words in the early days. When writing is broken, the history, science, technology and artistic traditions of the whole civilization will be broken, and Egypt will be gone. The Phoenicians in North Africa disappeared during the Roman period. They didn't understand or discuss it. I don't know much about the Middle East, but I feel that the Middle East countries have strong viability. After Islamic unification in that area, those people seem to think that as long as the church is immortal, the spirit is immortal, and everyone has the same faith, they can get married and establish a country anywhere. If the country dies, it will not die. In its heyday, it will expand to Europe, Asia and Africa. Religious fanaticism is terrible. The imperial power failed to control the religious power, which seemed to be their own. There are so many words that I have forgotten the time. That's all I feel.