Do You Think I'm Showing Off? My Protector Is Actually the Great Emperor

Traveling through a fantasy world, what should I do if I have no background or talent? It doesn't matter, I'll make one up myself! When I meet people, I tell them that I come from the Changsheng Gu family, which has been hidden for thousands of years. The person who looks after the door of my Gu family is a pure-blooded true dragon, and the person who sweeps the floor is the remnant soul of the Great Emperor. At first, everyone thought I was crazy. Until that day, the Holy Land wanted to kill me to seize the treasure. I tore a crack in the void with my backhand, "invited" the clone projection of a deacon from the outer gate of the Gu family, and smashed the mountain gate of the Holy Land with a slap. The entire immortal world was shocked - it turns out that the Changsheng Gu family really exists! After the news spread, countless ancient traditions began to frantically search for clues about the Gu family. And as the legend of the Gu family spread more and more widely and became truer, I actually vaguely felt that the family background I had fabricated was slowly condensing and taking shape in the world. The emperor's soldiers, the armored cavalry, the dust-covered ancient emperor... I told the lie a thousand times, and even Tiandao almost believed it. I transformed into a young master, experienced myself in the world of mortals, and became a saint in front of others. I put on my vest, transformed into a protector, and swayed nineteen continents with one sword. When darkness and chaos come, the Forbidden Zone Supreme wants to bloodbath the world. I sat on the Void Throne, and behind me stood twelve "ancestors of the Gu family" at the Immortal Emperor level. The Supreme Being was paralyzed: "Where on earth did this Gu family come from... Let's give it a slap!"