In ancient times, due to the underdevelopment of medicine, for people in the Three Kingdoms period, the plague was no different from a terminal illness. Moreover, the strong spread of plague and the extremely high mortality rate are also important reasons for population extinction.

You know, in ancient times, there was basically no cure for the plague, so we had to wait for death. But ancient people knew nothing about the plague and didn't know what the transmission route was. Therefore, once the epidemic breaks out, it will inevitably lead to the spread of ten languages. The way people faced the epidemic in ancient times was to carry it with them, so most people survived the war, but they all died of the plague in the end. But there was a natural barrier in ancient times, that is, the traffic of ancient people was underdeveloped. If a plague breaks out in a village, it will only hurt that village. Even if all the people in that village die in the end, it is possible that the village next door still knows nothing. This is entirely due to the self-sufficient small-scale peasant economy in ancient times, and it is precisely because the transportation in ancient times was not very developed, so the possibility of people dying from the plague was greatly reduced.

You know, the casualties caused by war are limited after all. In a war, if one side is at a disadvantage, then deserters will appear at this time. However, desertion is a precursor to the disintegration of the army. Humans are still afraid of death. Facing an invincible enemy is tantamount to dying. Of course, the ancients knew this truth, so once they were at a big disadvantage in the war, most people would choose to escape. So in ancient times, although hundreds of thousands and millions of troops were often used to fight, in fact, the casualties were still very small, because in the face of death, human beings were still very afraid. ?

However, people can escape if they can't fight in the war, but under the ravages of the plague, human beings can't escape. In that era when medicine was underdeveloped, people thought that plague was God's punishment for people. If someone in the village has a plague, people may gather together to pray for that person, which will accelerate the spread of the plague more quickly. Therefore, the real population extinction of the Three Kingdoms is not a war, but a plague.