The Great Pyramid of Egypt is146m high and 230m long on four sides, covering an area of 529,000 square meters. * * * used 230,000 stones. As early as the Greek and Roman times, people chose the seven most acclaimed buildings in the world. However, the architecture known as the seven wonders of the world has almost disappeared, and the unique Great Pyramid of Egypt still stands, witnessing the glory of civilization at that time. It is generally believed that the Great Pyramid was built by King Khufu in the fourth dynasty more than 2000 BC. However, due to the lack of historical materials, later historians have reached this conclusion through legends and related clues. How to build such a huge project? Who does incredible wisdom come from? And for what purpose, but the mystery has never been solved. At present, this statement has been questioned with the release of many research results. Not Pharaoh's Tomb Historians generally believe that pyramids are closely related to Pharaoh's tomb. However, in 820 AD, the Muslim governor of Cairo, Caliph al-Ma Meng, led his troops to dig a passage to the Great Pyramid for the first time. What he saw was a very simple room, with no funerary objects, jewels or statues, or even fragments. The room named "The King's Palace" has only an empty box-shaped stone box without a lid. The walls are also bare, without any decorative words. Historians have come to the conclusion that this story of entering the Great Pyramid for the first time was "robbed". However, practical research shows that it is very unlikely that grave robbers want to enter the Great Pyramid from other entrances. Under common sense, it is impossible for grave robbers to steal every fragment, let alone erase all the inscriptions describing Pharaoh on the wall. In order to commemorate and praise the Pharaoh, the Egyptians have been decorating the interior of the king's mausoleum with rich funerary objects. From this point of view, the simple Great Pyramid is probably not the tomb of Pharaoh, or even irrelevant. In the late 1980s, William Flinders petrie, the father of modern architecture, pointed out that the most amazing thing about the Great Pyramid was its orientation. Because all the ridges face the southeast and northwest correctly, the error of each position is within five (one point is one sixtieth of one degree). This is not only a very accurate observation technology, but also surprisingly, the builder can maintain ultra-high accuracy on such a huge building. The accuracy of its levelness is also shocking. Because the error is only one and a half inches (about three? 1? 1 8 cm), even modern buildings are hard to reach. Scientists speculate that it will take at least thousands of years to build such a high-tech level as the Great Pyramid. However, throughout the history of Egypt, there is no record of the development of this technology. Extraordinary technology The mechanical structure of the Great Pyramid is extremely exquisite. It won't pile more than two million stones directly into a cone. If the structure is so simple, as long as a part collapses, it will all collapse because it is too large. What supports the Great Pyramid is a structure similar to tree rings, that is, it consists of a hard structure called buttress and a rock-filled layer filling its gaps. This structure caused the Great Pyramid to collapse in a major earthquake in the13rd century, and the whole structure was not affected at all. However, the pyramids of the third dynasty built before the Great Pyramid or the pyramids of the fifth and sixth dynasties built after it are quite rough in structure, and many of them have completely collapsed. Moreover, it is also puzzling how to put 2.3-2.6 million large stones with an average weight of 2.5 tons (2,500 kilograms) from the ground to a height of 100 meters and put them in an absolutely accurate position. Egyptian scholars speculated about more than 30 kinds of construction methods, but after analysis and investigation, it was found that these methods were actually not feasible with the technology and ability that Egyptians could have at that time. Graham Hancock, a scholar who climbed the Great Pyramid, put forward his question in detail. He said: "In this bumpy place, on the one hand, you need to keep your body balanced, on the other hand, you have to carry a stone at least twice as heavy as a modern private car from below, transport it to the right place and aim at the position. At that time, these masons didn't know what they were thinking. " Jean-Francois champollion, known as the "father of modern ancient Egyptian studies", thinks that the people who built the pyramids belong to the giant type in wisdom. He said: "Their ideas are as superior as those of a giant 100 feet long." This is a statement worth thinking about. Since all kinds of evidence show that it is impossible for the Egyptians to build the Great Pyramid, could it have been built by prehistoric humans with great wisdom or stature? In fact, scholars have published relevant research on this point. The speculation of prehistoric civilization is also the focus of scholars' research. It is 20 meters high and 73 meters long. It is believed that it was built by the Pharaoh Cabra of the fourth dynasty. Recently, however, scientists speculated from the erosion traces on the surface of the Sphinx that it might have been built earlier, at least 1 10,000 years ago.

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