Start with Three Thousand Miles of Exile

I, a member of the 996 community, became a criminal exiled to the border. When the barbarians attacked, there were only three hundred old and weak soldiers in the city. I threw out a set of KPI assessment and last elimination system. A month later, my army had strict military discipline and was not afraid of death. When the old enemy in the court thought that I was gone and led 30,000 iron cavalry to the city, I stood at the top of the city, turned around and asked the deputy general: "Has our human efficiency and loyalty reached 100%?"