What are the unsolved mysteries in world history that still seem confusing?

The world is full of miracles, and there are many unsolved mysteries waiting for us to explore. The mystery of "Mayan civilization" and "Egyptian pyramid" has not been solved so far, so it is confusing. There are also many unsolved mysteries in China's ancient books "Shan Hai Jing" and "Zhouyi Metaphysics", which make people look puzzled and wait for us to solve them. We can learn about ancient exotic animals and the so-called geomantic omen, but are these scientifically based? If it is false, then why do so many people believe it and spread it to this day? In the words of grandparents, the things left by our ancestors are certainly useful, but some things still need us to see the truth clearly.

Today, we talk about some unsolved mysteries in the world. The first is the new dynasty crossing, Wang Mang's new dynasty. This is now that many people think that Wang Mang has crossed back. Why? Because this dynasty was established around AD 0; Vernier calipers were discovered in this dynasty; The social form at that time was the current socialist social form; The dynasty at that time was called "Xin". By contrast, this is the only one named "Xin" in China history. Now the theory of Wang Mang's crossing is more and more confirmed.

The mystery of the disappearance of Mayan civilization is also a hot topic now. The Mayans mastered a high degree of knowledge of agriculture, mathematics and astronomy. But all the Mayans disappeared overnight. No one knows whether this is true or not, but the astronomical technology of the Mayans at that time was absolutely true, and even some astronomical principles still have certain reference value in the present Mayan civilization.

There are so many unsolved mysteries in this world that we need to explore together.