Crystal coffin sex cool, have jade general antiseptic function, is conducive to prolong the preservation of the body; and, the crystal coffin itself texture corrosion-resistant, especially its transparent properties, both beautiful and beautiful, but also convenient to look forward to, which may be the main reason why we value the crystal coffin. However, if in the same natural conditions, crystal coffins of corpses embalming advantage is actually not very good, than China's specialty - gold nanmu coffins, to be much inferior. Many of the unembalmed ancient corpses found in current archaeology were buried using burial furniture that was almost exclusively made of nanmu. I have mentioned a short story in "The History of Chinese Tomb Raiding": when a bowl of braised meat was put into a coffin made in the southern part of the country, and it was transported to the north in a month or so, the meat not only didn't rot, but also didn't get cold. Since nanmu coffins are so good, why do national leaders still favor crystal coffins? The main reason is for the consideration of veneration. Compared with the nanmu coffin, the production cost of crystal coffin is too high. To make a good crystal coffin, first of all, there must be high-quality raw materials - at least the first grade of crystal. Crystal is actually a kind of high-grade glass, the main component is silicon dioxide. But in the jewelry market, crystal is a kind of gemstone, the ancient Chinese called "water essence", "water jade", from this name, you can know the crystal is extraordinary. In many cases, the value of crystal can be comparable to jade. However, it should be noted that crystals are not always crystal clear, because it contains different elements, but also colorful, black, yellow, purple, green, gray, rose and so on. But the most favorite, or colorless transparent crystal, which is also the most basic impression of the crystal, the production of crystal coffins are this transparent crystal.