That expression of pleasant surprise soon disappeared. That violet robed youth soon cried out anxiously, "Big Brother, hurry and flee. That person is too terrifying…"
Mo Wuji laughed and said, "It’s too late to flee, that person is already here. I say, Yan Li, I gave you a vase of Billion Year Immortal Wood Marrow those years ago but you don’t seem to have grown much. Even your transformation isn’t complete, there are still two golden horns on your head."
This violet robed youth was Yan Li, he was the Golden Horn Violet Dragon that Mo Wuji saved. Back then, Mo Wuji was able to leave the cultivation world because of the Hidden Dragon Pool that Yan Li told him about. Not did the Hidden Dragon Pool help him to get back to the Immortal World, it also helped him greatly: his physique had improved greatly and his cultivation also rose.