There are many societies, cultures and ethnic roots, but there are only two civilizations in the world. There is Western Civilization, which has its root in ancient Greece and Rome through Christendom in the middle age to the present. And there is Chinese Civilization.
全世界有很多文化、社會、少數民族，但只有兩個文明發源地，一是西方文明，從古希臘、羅馬到中世紀的基督教世界，延續至今；另外就是黃河流域的中國文明。