1. Develop border areas and improve border guards.

Today's territory of China was developed and built by our ancestors, and the labor of our ancestors in China gave way to ancient civilization. From the beginning of the Yellow River and the Yangtze River, it gradually expanded and opened up, and then after the class society, the emergence of hierarchical differentiation made some people no longer need it and directly faced the primitive ecological environment of wild animals and poisonous insects.

With the birth of class society and exiled prisoners, exiled prisoners naturally become candidates who directly face the harsh natural environment. Coupled with the collision between farming civilization circle and nomadic, fishing and hunting civilization circle, the prisoners were exiled. I also began to face the harsh war environment, in order to make meritorious deeds and return to my hometown. So these prisoners lived in exile, which not only changed the harsh environment, but also changed the composition of the border guards. Especially with the participation of intellectuals, some underdeveloped border areas have become models of cultural prosperity. Just like after Su Shi went to Hainan, Danzhou culture developed rapidly.

2, redeem oneself by good deeds, hide talents in the snow

Secondly, the exiled prisoners are not only vicious people, but also various talents who have saved their lives under the cruel feudal criminal law. Although there are corrupt officials everywhere, there are not a few who are even guilty. Therefore, among the exiles, besides criminals, some people will be lucky. Just like the political prisoners of czarist Russia who opened up wasteland in Siberia.

And under the political struggle of feudal centralization, in order to protect some politicians, wait for an opportunity to make a comeback, let them stay away from right and wrong and hide in the snow? Exile? Criminals are also exiles.

3, the environment is not good, not smooth.

Thirdly, exile is not equal to the grace of not killing under feudal centralized politics. In history, many people died before they reached the exile. Bad natural environment and man-made halfway interception are the sharp knives to kill people without seeing blood. In other words, banishing people is also an uneasy and kind way to kill people.