Lin Fan didn't speak; he began to study the Thunder Control True Technique.

Of course, Lin Fan was also using the Universal Image to study it.

After some research, Lin Fan discovered that the Thunder Control True Technique had indeed been subtly altered by the Demon Dragon.

If Lin Fan didn't know better and really cultivated according to the Thunder Control True Technique taught by the Demon Dragon, he would soon become the Demon Dragon's slave, allowing the Demon Dragon to control him at will.

"Hmph!"

Lin Fan snorted inwardly, thinking coldly, "Truly deceitful. Fortunately, I have the Universal Image; otherwise, I might really have been fooled!"

With the help of the Universal Image, Lin Fan quickly made changes to the Thunder Control True Technique.

With these modifications, even if Lin Fan followed it for cultivation, the Demon Dragon wouldn't be able to control him anymore.

Lin Fan said loudly to the Demon Dragon, "Okay, Demon Dragon, I will cultivate the Thunder Control True Technique now. Hopefully, you won't go back on your word; otherwise, I will fight you to the death!"

After saying this, Lin Fan sat down on the ground and began to cultivate the Thunder Control True Technique.

This was the most suitable place to practice the Thunder Control True Technique.

Because Lin Fan could utilize the surrounding Power of thunder and lightning at any time to cultivate his Thunder Control True Technique.

Meanwhile, the Demon Dragon sealed within the Thunder Palace, seeing that Lin Fan had begun to cultivate the Thunder Control True Technique, was extremely delighted.

The Demon Dragon thought excitedly, "Haha, this is great. I've been trapped here for so many years; soon, I can finally be free!"

"Thunder Venerate, you old scoundrel, just wait. Even though I know you've surely ascended to the Divine Domain, one day, I will go to the Divine Domain to kill you!"

"Old scoundrel, you've sealed me here for tens of thousands of years. If I don't avenge this, I'm no Demon Dragon!"

...

Lin Fan continuously cultivated the Thunder Control True Technique!

The surrounding Power of thunder and lightning gradually gathered around Lin Fan.

Pop...

About an hour later, the Power of thunder and lightning around Lin Fan suddenly exploded!

Lin Fan then stood up with high spirits.

With a wave of Lin Fan's hand, the Power of thunder and lightning surrounded him.

"Thunder strike!"

Lin Fan softly shouted, and simultaneously pointed lightly in a certain direction.

Rumble...

Suddenly, a terrifying sound echoed.

Then, a bolt of lightning directly struck the spot Lin Fan had just pointed to.

"Haha!"

Lin Fan laughed happily and said loudly, "This Thunder Control True Technique is indeed powerful; the cultivation techniques of the Immortal Domain are truly extraordinary!"

In fact, Lin Fan had already witnessed the Thunder Control True Technique back in the Holy Soul Domain!

However, at that time, the Thunder Control True Technique was just the Mortal Realm's Thunder Control True Technique, which honestly couldn't be called the Thunder Control True Technique at all. Lin Fan knew clearly that now, this could be considered the real Thunder Control True Technique.

The Demon Dragon was also surprised and asked, "Young man, you... managed to master the Thunder Control True Technique in just an hour?"

The Demon Dragon originally thought that if Lin Fan could master the Thunder Control True Technique within a couple of months, it would already be an incredibly fearsome feat, yet now, he had succeeded in just a day?

This talent is truly terrifying!

"Hehe!"

Lin Fan chuckled indifferently and said, "It's just the Thunder Control True Technique. Although there is a bit of difficulty in the cultivation process, it's nothing significant. For it to take me an hour to master the Thunder Control True Technique, there's nothing to be proud of. Originally, I thought half an hour would be enough to succeed!"

"Uh!"

After hearing Lin Fan's words, the Demon Dragon felt speechless.

The Demon Dragon thought to himself, "I never expected such a formidable genius to appear in the Human Clan. This person's talent might rival that of the Thunder Venerate from back then!"

Somehow, at that moment, an uneasy thought crossed the Demon Dragon's mind.

The Demon Dragon felt that someone as talented as Lin Fan might not be so easily deceived by him.

The Demon Dragon then calmed himself and shouted to Lin Fan, "Young man, come quickly inside. Once you enter the Thunder Palace, release me, and then you can use the Nine Dragon Divine Cultivation Technique to refine me. Hurry up... I don't want to suffer here any longer!"

The Demon Dragon appeared eager.

"Hehe..."

Lin Fan laughed, saying, "Demon Dragon, thank you, thank you for teaching me the Thunder Control True Technique!"

Then, Lin Fan began to stride directly towards the Thunder Palace.

Endless Power of thunder and lightning swept towards Lin Fan.

If it were someone else in this situation, they would surely be completely scorched by the thunder and lightning, but Lin Fan was unscathed because he possessed the Thunder Control True Technique, allowing him to direct the surrounding Power of thunder and lightning. Naturally, this power couldn't harm Lin Fan.

Finally, Lin Fan entered the Thunder Palace!

Suddenly, in Lin Fan's sight appeared a world of ice and snow.

Meanwhile, in the snowy sky, lightning flashed and thunder roared, as bolts of lightning surged down from time to time.

In some places, the lightning was extremely dense.

If it were an ordinary person under such circumstances, they would be unable to dodge.

However, Lin Fan could control the thunder, so he could easily neutralize these bolts of lightning.

Lin Fan spread out his Immortal Consciousness, wanting to find the Demon Dragon's whereabouts.

But unfortunately, this icy world was too vast, and there was a special energy suppressing Lin Fan's Immortal Consciousness, so, for the moment, Lin Fan couldn't find the trail of the Demon Dragon.

However, at this moment, the Demon Dragon's voice came from one direction: "Young man, I'm over here, come on over!"

"Ok!"

Lin Fan responded and headed in that direction immediately.

Soon, he arrived at the foot of a large mountain.

To Lin Fan's surprise, a giant dragon was pressed beneath the mountain.

Endless Power of thunder and lightning poured down from the sky, acting entirely upon the mountain, forming huge runes.

The Dragon Soul of the Demon Dragon was being suppressed here by this mountain; without it, the Demon Dragon would have escaped long ago.

"Haha!"

The Demon Dragon, seeing Lin Fan's arrival, was extremely delighted, saying, "Young man, quickly, use your Divine Skills to smash this Thunder Mountain, then I can be free!"

The Demon Dragon believed that Lin Fan would soon comply with his wishes.

After all, the Thunder Control True Technique taught to him had been altered by the Demon Dragon.

In the future, this young man before him would gradually become his slave.

However...

Soon, the Demon Dragon realized that something seemed a bit off.

Because, after giving Lin Fan the order, Lin Fan just stood there casually, with a faint smile on his face, as if the order had no effect on him at all.