What is Fela, and who is Fella unbearable?

Fela: Fela is a person without martial virtue. It can be said that he is the product of picking out and killing the most combat-effective batch of sheep in the flock. After dozens of generations, this elimination process will have a clear impact on human genetics. Don't say anything else, you experiment with mice or similar animals, foxes and the like, as long as the middle of a population, every generation kills the foxes that run the fastest or jump the most fiercely After dozens of generations, the offspring of the newly produced foxes will become much duller and more docile than the offspring of the earliest foxes. Fira, by its definition, is a group without an elite, or a ruling class, without a warrior class. Those who are qualified to be samurai, if they live in the humble situation of the ruled class, and live under the autocratic rule for a long time, they will definitely be the easiest to be killed, and the most likely to be punished by the nine clans. Do you think, who are the people who were implicated in the nine clans? Either they are very brave and use force to violate the ban; or they are very smart and use the text to violate the law.

Fela is unbearable: refers to the following situation