“Young Carter, tell me, what exactly is the use of your incantation?” Mr. Night’s expression was far from calm, appearing extremely agitated.

William Carter was taken aback, thinking that something had gone wrong with Mr. Night’s battle qi, and hurriedly asked, “Mr. Night, is there a problem?”

Mr. Night gave a bitter smile. “I don’t even know if this counts as a problem…”

William Carter grew a bit nervous, worried that Mr. Night’s battle qi might have gone awry due to the celestial energy, but Mr. Night’s expression didn’t seem to indicate any major issue.

“I spent a full two days, and only managed to consume about half of my battle qi…” Mr. Night looked at William Carter with an expression of pure admiration.

An old man already in his seventies was looking at William Carter with such eyes—not with kindness or concern, but with reverence.

Originally, with Mr. Night’s seventh-rank, first-grade battle qi, if he went all out, he would typically exhaust all his battle qi in about a day.

But Mr. Night had spent two days and only barely managed to calm the surging battle qi, yet he still felt full of energy.

In other words, if he faced an opponent of the same level, Mr. Night could easily outlast any of them.

He felt as if his battle qi was inexhaustible. Every time he released his battle qi, he used to clearly feel the depletion, but now it seemed endless. Even though he consumed the same amount, it felt like he’d only used a tiny bit.

Mr. Night explained in detail the changes in his battle qi to William Carter, who stroked his chin and gazed intently at Mr. Night.

He also found it strange, because he was certain that Mr. Night’s battle qi hadn’t changed much; he had analyzed it several times and always reached the same conclusion.

Mr. Night’s battle qi had indeed increased by about thirty percent, but this wasn’t enough to raise him by a full grade, so it shouldn’t have boosted Mr. Night’s endurance by so much.

William Carter checked Mr. Night’s battle qi again, but still couldn’t figure it out. Now, as Mr. Night sat before him, he no longer harbored any of his previous disregard for William Carter.

“Mr. Night, could you let me take a look at the battle qi technique you practice?” William Carter asked seriously.

“Of course, no problem.” Mr. Night replied readily. Although his battle qi technique was profound, the Fang family had copies; even if he didn’t give it, William Carter could find it elsewhere in the family.

Besides, William Carter had cured his old ailment and helped his battle qi improve by leaps and bounds. No matter what, he owed him a debt he could never repay.

Mr. Night recited the entire Black Heaven Demon Flame technique word for word, then asked, “Young Carter, remember as much as you can. I don’t have a manual here, but I can copy one out for you in the next couple of days.”

“No need, I’ve already memorized it.” William Carter waved his hand.

“Mem… memorized it?” Mr. Night’s eyes nearly popped out of his head. This technique was twenty or thirty thousand characters long, and William Carter had memorized it after hearing it just once?

How was that possible? Back when he learned the technique, it took him twenty days of rote memorization before he finally got it down, but William Carter had remembered it all in a single go.

William Carter rubbed his nose. For most cultivators, this wasn’t difficult at all. Even a basic technique a hundred times more complex than this could be memorized at a glance.

Not only that, if a cultivator wanted to pass on some complex matter or technique to someone else, they could imprint it directly onto the other’s soul with their divine sense, and it would never be forgotten.

“Mr. Night, I haven’t figured it out yet. Give me two days to study it.” William Carter said seriously.

After Mr. Night left, William Carter fell into deep thought, deducing the Black Heaven Demon Flame battle qi technique over and over. But since it was an advanced technique, with William Carter’s current ability, it was hard to probe its depths, let alone clearly understand the changes between celestial energy and the Black Heaven Demon Flame battle qi.

On the surface, it seemed the Black Heaven Demon Flame hadn’t changed; aside from Mr. Night’s battle qi increasing by twenty or thirty percent—still not enough for a full grade—there was no astonishing growth.

But the increase in Mr. Night’s battle qi endurance was real, and not just by a little, but by several times, which left William Carter very puzzled.

If Mr. Night’s battle qi had grown stronger, weaker, or improved due to the celestial energy, William Carter could understand. But the increase in endurance was something he simply couldn’t figure out.

Chapter 0011: Olivia Carter’s Change

William Carter drew a bit of Mr. Night’s battle qi and tried to fuse it with his own celestial energy, but didn’t get a satisfactory result.

At the same time, this only made William Carter even more curious. For a cultivator to advance, it wasn’t just about training and comprehension—they also needed an undying thirst for knowledge.

The next day, Olivia Carter came running over again. Judging by her expression, she seemed extremely anxious.

“Fifth brother… fifth brother.” Olivia Carter’s voice was gentle and refined, nothing like the fierce little girl she usually was.