After all, although not many demons in the Ten Thousand Demon Lair knew formations, no one could guarantee there wasn't some scheming soul who did—or a trap left behind by the Ancient Qi Practitioners.
For his own safety, he felt it was well worth spending some Energy Points to raise Qi's Formation Diagram Detailed Explanation to perfection.
Having made up his mind, he lowered his eyes to the plus sign beside the Qi's Formation Diagram Detailed Explanation Skill.
As 500,000 Energy Points were deducted from the system panel, boundless Starlight Energy instantly filled the entire Cave Abode of Yōumíng Dragon Ancestor.
But the Starlight Energy came and went in a flash.
In the blink of an eye, his body became like a black hole, sucking in the Starlight Energy.
The moment the Starlight Energy entered his body, all kinds of memories and knowledge about formations began flooding into his mind.
Seeing this, Luo Yi hurriedly closed his eyes and recalled the contents of Qi's Formation Diagram Detailed Explanation he had read earlier.
At first, Qi's Formation Diagram Detailed Explanation had seemed like a heavenly text to him, its contents completely incomprehensible.
Now, combined with the memories pouring into his mind, it no longer seemed as profound as it had at first. He was even beginning to grasp some of the key points of setting up formations.
"I mustn't get conceited!"
The moment this thought arose in his mind, he forcefully suppressed it.
Then Luo Yi carefully sensed the memories continuously surfacing in his mind.
"Crack, crack!"
“Crack, crack!” Above the sky, where thunderclouds churned, the Thunderclap Demon Ancestor watched the retreating streak of light. He slowly transformed into a shriveled old man with thin white hair.
He wore nothing but a pair of gray boxer shorts. His chest was