As the system prompt sounded, the spiritual energy around Luo Chen surged and rushed towards Luo Chen. In a blink of an eye, Luo Chen broke through from the third rank to the fourth rank.

Feeling the full body of Jian Yuan, Luo Chen finally smiled a little bit more on his face.

The price he paid for this comprehension of the Demon Devouring Technique was not a small one. The best spirit stones produced these days in the best spirit stone bag were exhausted except for the two pieces he left in advance.

In addition, some of the best and top-grade spirit stones left by the masters of the ancient dwellings of Enlightenment were all exhausted, and nothing was left.

In addition to the consumption of spirit stones, Luo Chen also used up the ancient enlightenment tea leaves obtained in the previous lottery. Naturally, the preciousness of ancient enlightenment tea needless to say.

Something from the legendary No. 1 Territory, even the existence of Xiao Tianna and others seem to be secretive when mentioning the Ruins of Chaos. A piece of tea from the Ruins of Chaos in the Ruins of Enlightenment, the preciousness of which can be imagined.

But in order to comprehend the demon energy, Luo Chen still used the only piece of tea from the ancient tea that he had in his hand!

Fortunately, Luo Chen's gain this time was not small. Needless to say, his cultivation base breakthrough, although Luo Chen could successfully break through within a few days even without system rewards, but the breakthrough a few days earlier was a surprise.

The most important thing is that Luo Chen successfully penetrated the Elemental Devouring Demon Art. Although Luo Chen did not dare to practice this technique because of the terrifying backlash of the Elemental Devouring Demon Art. The demon power of Qi Yuan merged together.

But part of the secret technique Luo Chen recorded in the Devouring Demon Art can still be used!

Previously, the system prompts that the Heaven-Rank High-Rank Secret Technique [Essence Sweeping Technique] is just one of them. There are still a lot of the remaining Secret Techniques that have not reached the Heaven-Rank, but it seems to be due to insufficient Rank. It's the standard of system rewards!

Settling down, Luo Chen pondered for a moment, and directly pushed open the door of the Ancient Enlightenment House and walked out.

As for his remaining four lucky draw opportunities, Luo Chen does not intend to use it now. After all, he really has nothing short of it. Even if he uses up the lucky draw opportunity, it is just icing on the cake. There are several lucky draw opportunities reserved for use in times of danger. , For Luo Chen, it would be much more than it was consumed now.

As soon as Luo Chen walked out of the Ancient Enlightenment House, he found that the Purgatory Demon Dragon Hei Tan did not know when he appeared not far outside the Ancient Enlightenment House. The Demon Dragon was standing on a boulder, his sight was level with Luo Chen, with golden dragon pupils. It is full of solemnity.

"Boy, what did you do in the Ancient Enlightenment House just now? I can even feel the evil spirit!" Seeing Luo Chen walking out of the Ancient Enlightenment House, Hei Tan directly rushed towards Luo Chen while muttering.

It's just that Heitan only flew halfway and was stopped by layers of magic formations emerging out of thin air, no matter how much he flapped his wings, he couldn't move forward.

Luo Chen couldn't help but smile when he saw this scene. He grabbed the black charcoal's wing roots, grabbed the black charcoal in his hand like a chicken, and placed it on the boulder beside him. Then he slowly said, "Just see It's nothing more than to understand a technique."

"What kind of exercise can have such a terrifying evil spirit, even if it is more than the Jedi in the six reincarnations?" Hei Tan couldn't help but flap his wings and hover in front of Luo Chen with a look of doubt.

Luo Chen was silent for a while, looking at the black coal in front of him, a flash of light suddenly flashed in his mind.