The incorruptible corpses in the first thousand years are divided into two types: mummified corpses and wet corpses. The most common ones we see are mummified corpses, such as Loulan female corpses, Egyptian pharaohs, etc. These are caused by special conditions and are necessary The condition is dry. Because the decay of the corpse is caused by bacteria, and bacteria cannot survive in an absolutely dry environment, the decay of the corpse stops and a mummy is formed.
The second wet corpse, Xin Zhui, which we found in Mawangdui, is an extremely rare wet corpse. The conditions for her formation are not accidental. You can watch the relevant programs for detailed video explanations, coffin making It has reached an absolute seal, so it has been isolated from the air and has been preserved to this day.