History is always strikingly similar, but it is not a simple repetition. "History is moving forward, but in the process of moving forward, it is also allowed to be similar occasionally. After all, it is not exactly the same, and it can't be done. This is the development trend of things in philosophy. It can be understood that history has the same laws, directions and principles in the process of development, because the development of human society has its own set of laws, only specific to a certain historical period or dynasty. Its concrete manifestation is the same. For example, history has ups and downs. When the People's Republic of China was founded, it was very serious and prosperous. Later, it would degenerate until it perished in the same direction, but the specific forms were different. For example, Shang Zhou died because he didn't understand da ji, but the Han Dynasty experienced ups and downs because of consorts and eunuchs. But the expression is different. This is a comparison of historical periods in vertical time, so there is also a comparison in horizontal space. For example, the contrast between the Roman Empire and the Qin Empire in China is a spiral development track, not a neat circle or repetition, because it is spiraling up. Simply put, that's it