There Is a Martial Arts Secret in the Black Hole

There is a martial arts secret book in the black hole. It is said that whoever can find it will be invincible in the universe... (The world view of this book: There are various types of civilizations in the stars and seas, different races, different cultivation methods, different technological systems, technological force and force are running parallel in the universe. The earth is in the desert of the Milky Way and has not yet entered the ranks of cosmic civilizations. This book's outlook on life: In this universe, it is no longer easy to survive. Values of this book: None) *************************************** Book club group: 193604165 (Martial Arts World)