What does the case on the pyramid mean?

Ancient Egypt in 2480 BC was the early period of King Khufu's rule. Like every Pharaoh, he is going to build a mausoleum when he takes office a hundred years later. Yes, every summer, members of the royal family travel all over the Nile Valley and choose able-bodied men from each village as labor to build the Great Pyramid and serve the king. They work in large groups of 6.5438 million people, and each group has to work for three months. There are slaves among these workers, but there are also many ordinary farmers and craftsmen. Slaves in ancient Egypt transported huge stones to construction sites with the help of animal power and rolling logs. They also piled the sand from Zhou Tianran on the slope and pulled the boulder along the slope to the pyramid. In this way, pile a layer of slope, build by laying bricks or stones a layer of stone, and gradually raise the pyramid. It took about 30 years to build pyramid of khufu.

The Nile regularly floods every year, flooding the land, nourishing the soil, making the cultivated land fertile and agriculture developed. Therefore, Egypt became one of the earliest countries in history that did not need to put all the labor force into agricultural production. The surplus labor can be used for other purposes, such as building pyramids. This big ship full of labor will wind up along the Nile, passing through cliffs and fields on both sides along the way, and its destination is Giza, south of Cairo 10 km. According to Egyptian mythology, everything is a chaotic liquid at the beginning, and the first dry soil in chaos is in the shape of a pyramid, symbolizing life. But the ancient Egyptians, driven by some impulse, chose this shape symbolizing life to build the resting place of the dead. The newly appointed Pharaoh Khufu also came to the desert with the same impulse to witness the first and most important ceremony of his reign.

Stability is the key for such a huge building. The architect plans to use giant marble blocks, which are arranged layer by layer in a decreasing way, which is the most stable structure. After the construction site is selected, it will be cleaned and leveled first, and then the foundation will be built by skilled masons. A huge square marble floor will be the core of the pyramid.

After rough estimation, it is estimated that 5 million tons of stones will be needed to build the Great Pyramid. Although there is a great demand, most of it can be supplied near Giza. The quarry is in the south of the pyramid construction site, and about 1500 quarrymen work there. Since copper was the hardest metal possessed by ancient Egyptians at that time, every quarryman was equipped with a copper chisel. They cut a small hole in the boulder with a copper chisel, knocked it into a wooden wedge and watered it. The force of wedge immersion and expansion can crack the stone. However, the copper chisel will become dull after dozens of strokes, so another group of people need to soften the blunt chisel with fire, sharpen it and cool it with water so that the masons can use it again.