The only reason Dyon didn't come to force the Demon Sage to lift the rules earlier was because he knew it wasn't the right time for him to know the truth about Evangeline. But, the moment he finally pieced together that Evangeline was actually from an alternate timeline, he understood that he could now withstand the truth. In addition, Little Yin's battle bloodline awakening gave him even more assurance, his mastery over space and time had reached a profound level.
Now, Dyon didn't need to personally comprehend space and time, he could directly ignore them and rely on Little Yin whenever he wanted to use them.
But this bastard of an old man actually said no.
"You little shit." The Demon Sage wanted to strangle Dyon but he still a spirit, and his soul was weaker than Dyon's even in his prime. "You want your father-in-law to help you learn about a woman that isn't his daughter?! Have you lost your mind?! Over my dead body!"