Returning from the Prehistoric Times, I Became the Only True Dragon on Earth

Three years ago, Ao Yun accidentally traveled to the ancient world and became an unhatched dragon egg. After practicing for 1,000 years, he broke out of the egg. Coinciding with the great catastrophe of the dragon clan, he was tragically implicated by cause and effect, and endured the catastrophe of five thunders. Almost all his body and soul were destroyed, leaving only a drop of true dragon essence and blood, floating into the depths of infinite chaos. ... Three years later, Ao Yun returned to Blue Star and successfully transformed. Ao Yun suddenly discovered that he had become the only true dragon in the world. At that time, the Blue Star Demon resurrected and the world fell, with only the Xia Kingdom spared. All demons attack the Xia Kingdom and attempt to completely exterminate human beings. But the demon army had just arrived at the border of Xia Kingdom. A dragon roar filled the sky for nine days and soared up to a hundred thousand miles away... The demons were shocked. It turns out that the guardian beast of Xia Kingdom is really a dragon! ! !