Lu Yu stopped refining the sea of fire and opened the attribute panel again.
Without hesitation, he added the only Celestial Dao Experience Points to his realm. His current cultivation had already reached the peak of the Qi Sea Realm, unable to improve even slightly.
If he didn't elevate his cultivation now, then when would be the right time?
He took out the Immortal Heart. With no other Spiritual Objects at hand, Lu Yu could only choose to refine the Immortal Heart further to enhance his strength.
Lu Yu also had a new idea: he wanted to use the powerful self-healing ability of the Immortal Heart to create doppelgangers.
Like cells splitting, the number of doppelgangers would increase exponentially.
He alone couldn't refine the vast sea of fire, so he decided to create countless doppelgangers to jointly refine it.
Perhaps initially there would be only one doppelganger, but sooner or later, the numbers would grow more and more.
