Prevention and treatment of corpse decay
Plague, once it happens, is a symbol of the dead. In addition, the medical level in ancient times was not high, and people's medical literacy was not high. So in the event of a plague, people can only keep dying. If left untreated, a large number of corpses will rot and stink, which may lead to new infectious diseases. Therefore, ancient people would put lime on the bodies burned at high temperature to sterilize and prevent insects. When the environment is humid, it is very conducive to the spread of the virus, so it is necessary to use lime to absorb excess water in the air and keep the environment dry. Sometimes, even if those bodies are buried in the soil, they will rot and give off an unpleasant smell after being piled up in large quantities. At this time, using lime to kill the virus will play a very good role. After all, many pesticides and disinfection methods will glow, and in ancient times, people naively thought that lime could stop the spread of the epidemic.
Eliminate miasma and purify the environment
Think about how the plague happened, isn't it because of the bad environment, and then some viruses slowly infected people and began to spread? Those rocks can be weathered and then burned by fire and high temperature, which can play a role in preventing moisture and cold to a certain extent. For ordinary people who can't afford medicine, can't they move some stones? Through these rocks, we can get rid of the moisture in those wet areas, purify the air and delay the illness of those patients.
Avoid evil and suppress evil.
In ancient times, due to the underdevelopment of science and technology, plague was often regarded as a punishment from heaven. People feel it is necessary to keep integrity to drive away ghosts and usher in light. According to the ancients' cognition, lime can play the role of exorcism after burning at high temperature, so that the grievances of those ghosts can't penetrate lime to harm people. Therefore, the ancients often used lime or mahogany to suppress evil spirits in folk activities.