The Revival of Martial Arts in the Interstellar Era

Blue Star, after experiencing the flames of war and gunpowder smoke, the world federal government was established with difficulty, maintaining stability and peace on the surface. In this interstellar era that is about to enter the universe, a quiet change has occurred. My name is Qing Jingyu, an ordinary history teacher in a small city. On my way home, I picked up a... Martial arts master from three thousand years ago?