It's Too Difficult to Lead This Junior Class

After living for three hundred years, Yunwu only did one thing besides seclusion, and that was to go down the mountain and take in a junior brother. The little junior brother is smart and well-behaved; The younger brother's life experience is pitiful; Junior brother destroyed Yunwu Mountain... On this day, Yunwu turns eighteen, and his junior brother is a righteous and good boy. Yunwu stabbed his junior brother with a sword and took him down the mountain. Euphemistically called: teaching junior fellow apprentices