Who stipulated the solar terms?
Liang Qichao described himself as "four ancient civilizations", that is, "there are four ancient civilizations on the earth: China, India, Egypt and Asia Minor". Now it is generally considered as ancient China, ancient India, ancient Egypt and ancient Babylon.
The four ancient civilizations usually refer to the four earliest regions of human civilization, namely, ancient Babylon, ancient Egypt, ancient China and ancient India. However, due to the lack of accurate ancient civilization documents, the specific time of its birth is still controversial in academic circles. Today, a lot of human knowledge about philosophy, science, literature and art can be traced back to the contributions of these ancient civilizations. In fact, it can be proved in words that China is one of the four ancient civilizations and the only country with a complete history.
In the history of China, it was invaded by foreign countries such as Five Tigers and Sixteen Countries, Sixteen Xiongnu Countries, Territorial Land, Frontier fortress, Qiang, Xianbei, Mongolia and Manchu, but it was assimilated by Han nationality without exception. Chinese characters and Chinese have not disappeared, but have been widely used. Since modern times, the popularity of Chinese characters has reached a historical peak. From 7000 to 4000 years ago, ancient civilization entered the Bronze Age from the Neolithic Age and then the Iron Age. Most social systems adopt slavery, and the state power came into being late. Nome civilization in ancient Egypt is the earliest known civilization in the world.
Civilizations in the Indus River, the Yellow River and the two river basins all use pottery wheels to make pottery. Pi was calculated in Egypt and two river basins, Pythagoras theorem was discovered in Babylon and China, and Arabic numerals were invented in India.