Liu Feng could not exactly practice a move that would cause the heavens to show their wrath to him.
He put that project aside and just decided to cultivate for a while.
The air around him was richer in Qi than usual, and he had a lot of medium and low grade spirit stones that he could use to start cultivating.
He continued using the heaven devouring art to take in Qi from the world around him. But unbeknownst to him, the rune in his spirit sea started glowing brighter every time he used the Heaven Devouring Art.
And what that was doing, no one could tell.
Maybe it was growing stronger, or maybe it was just storing that energy for something that would come much later.
The sun fell and darkness pervaded. Liu Feng returned home and continued to meditated. At his stage, cultivators did not need sleep at all anymore.