First, the emergence of martyrdom system.
In the original primitive society, everyone was busy living and everyone was equal. But at the end of primitive society, productivity increased, so 369 appeared. By the time the dynasty was established, slavery appeared. At this time, slaves are at the bottom of society and can be arbitrarily transferred as property, used as slaves and used as livestock. In fact, the slave society in this period is simply the labor occupation of the bottom people by organizations with higher productivity.
Second, fear of nature.
Although human beings at that time improved some productivity, they were still unable to control nature and were afraid of some natural phenomena like modern people, which made some people have superstitious thoughts. For example, in ancient times, people thought that although the body died after death, the soul would go to another world. In another world, if you need strength, you need some slaves to cooperate. For another example, there are some so-called gods in the world. If you want a good year, you need to sacrifice. In addition, the ancients also divided everything in the world into 369. Animals such as chickens, pigs, cows and sheep have no wisdom and can only be eaten by humans. Not the best tribute to sacrifice. Only humans who have the same appearance as these nobles, but their status is far lower than that of the nobles, are the highest tributes when they go to sacrifice as human beings and livestock.
Third, the change of martyrdom system.
The phenomenon of human sacrifice system was mainly before the Spring and Autumn Period and the Warring States Period, especially after the Xia and Shang Dynasties. This phenomenon has been reduced on a large scale, mainly because the demand of the vassal States for population has been expanding. After all, the country will prosper only if someone cultivates it, so Qin Shihuang did not choose to sacrifice people. With the development of history, the system of martyrdom seems to have been ruled out and eliminated. At that time, there was a system of martyrdom in the Yuan Dynasty, this time out of superstition.