World of Destruction

In the peaceful world, with the return of travelers from all over the world, there is no longer peace. A man with ssss strength, Jian Qingxuan, is slaughtering countless armies with a sword. What is righteousness? If the world is destroyed, then there won't be so many things, right? Of course, other time travelers all know that a world-destroying demon king has appeared in this world. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.