In the end, the power of the Tower of Concepts reclaimed most of the black force field, but Cain displayed an ecstatic smile as he consumed 5% of it. The Scarlet King's ecstasy intensified as he observed the Sun Seed grow slightly larger and more powerful.
Enhancing his Sun Seed meant improving his Ego Wave since the Alter-Ego was the core of his Ego Eternal Path of Power. At this moment, any improvement was immensely important, as Cain needed to prepare himself for the Nine Heaven Ego Destruction Tribulation.
Before this lucky encounter, Cain thought the only way he could improve his chances of surviving the Nine Heavens Ego Destruction Tribulation was to enhance his soul force. However, that path was extremely complicated since continuing to strengthen his soul force before evolving his cultivation base was nearly impossible.