A wave of memories flowed inside Noah's mind. He saw flashes of Robert's life before the first change of his law when Heaven and Earth had yet to force him to join their system. His power still had something to do with corrosive abilities, but those images were too vague for Noah to gain a clear understanding.
The second wave of memories was even worse in terms of clarity. Most of them were simple while light and vague thoughts. Robert wasn't even himself during the period under Heaven and Earth's rule. Those mighty existences had forced him to modify his very core, transforming him into something that he barely recognized.
Then, darkness cleared that blinding light and gave birth to a clear wave of memories. Noah saw everything from the events on the other side of the Immortal Lands to the last battle against the solid stage cultivator.