Many emperors will build a mausoleum for themselves after their death, which will contain a lot of gold and silver treasures, all kinds of precious documents and books, as well as some silk products, gold and jade products and so on. This is what the emperor wants to leave for future generations, hoping to keep it well. However, if the technology is not mature enough to dig the emperor's tomb, then these cultural relics are likely to be destroyed instantly because of oxidation. After all, oxygen is very scarce after being buried underground for a long time.
Around 1955, Guo Moruo applied to the state for the excavation of the Ming Tombs in order to learn more about the history of the Ming Dynasty. At that time, the official did not realize the seriousness of the matter and agreed to Guo Moruo's request. 1958 started excavation, which lasted for two years.
A large number of cultural relics cannot be preserved because of technical problems. I want to know more about the history of the Ming dynasty, but I completely sent the history of the Ming dynasty to the grave, and even the bones of the emperor could not be preserved.
Therefore, under the lesson of this incident, the central government made a dead rule that the emperor's tomb must not be excavated, which prevented the disappearance of many historical relics.