Melee of Gods: I Protect China as a Mortal

(No harem, no routines, no system, not invincible, it's kind of cool...) Have you ever thought about the existence of God in this world? Have you ever thought about the fact that there are other creatures living outside the earth? Have you ever thought that humans are the real aggressors; My name is Qin Chuan. Twenty years ago, I really saw gods, and I also saw creatures that did not belong to the earth. And today... I saw them again... Legendary gods, "alien monsters", and nine rounds of investigating various supernatural events in China! ! ! Gods, humans, and "alien invaders", who are the original inhabitants of the earth?