Chen Feng stopped, but secretly tugged at Zhou Ping, who quickly understood: "Brother Feng, I think these junk items are only worth a hundred yuan. Are you stupid to offer a thousand yuan?"

“Yeah, I got carried away just now and didn’t think it through. Brother, I think a thousand yuan is too expensive. How about five hundred? If you’re willing, we can make the deal; if not, forget it.” Chen Feng looked annoyed and turned to the burly man, seemingly just regretting not wanting to buy anymore and was deliberately haggling.

"Deal. Five hundred it is. I'll be your friend, brother." The burly man shouted immediately, afraid that Chen Feng would change his mind.

“Brother Feng, these items are nothing special, why waste five hundred yuan?” Chen Feng returned to the stall, and Zhou Ping tugged at him and whispered.

"It's only a few hundred yuan. Take it back, study it, play with it, and then throw it away," Chen Feng said with a smile. He then swiped five hundred yuan for the burly man, took the few things the man had packed in his pocket, and left.

"Brother Feng, is there anything good in here?"

After returning home, Zhou Ping asked Chen Feng. He knew Chen Feng well; if it were something completely useless, Chen Feng would definitely not waste several hundred yuan.

“The rest is useless, but this stone might have something. I’ll study it and see if I can find anything.” Chen Feng took out the half-broken black stone and threw the rest into the trash can.

However, he did not immediately study the black stone. Instead, he finished his work for the day, made Qi and Blood Rice Balls and Qi and Blood Soup, practiced standing meditation for five hours, and practiced various martial arts techniques to get himself into the best condition.

In the morning, after Chen Feng paid off his first house loan, the 3,500 cultivation experience points from the mortgage arrived on time. Now he has 5,079 cultivation experience points, enough to upgrade Lingxi Finger and Bajiquan to perfection.

However, Chen Feng did not upgrade for the time being. He planned to study the secrets of the black stone first to see if there would be any unexpected surprises. After all, the wolf god sculpture of that cultist had given him a fragment of the Devouring Mystic Technique.

That night, after preparing in his room, Chen Feng unleashed his fully mastered Spirit Finger technique, tapping the black stone with his finger. Instantly, the stone emitted a soft sound, and a small crack appeared on its surface.

As tiny cracks appeared, the fluctuations of spiritual energy on the black stone became more pronounced, as if something awakening within it was about to awaken.

Having learned from the precedent of the golden pages in his mind destroying the remnant soul of a wolf clan expert, Chen Feng did not hesitate to use the Spirit Rhinoceros Finger to attack the black stone again, trying to force out the remnant soul inside.

"Snap—"

Sure enough, the black stone, which already had cracks, was extremely hard and of unknown material, but it was now cracking and making more tiny cracks.

"Again."

Chen Feng used his mental power to sense the changes inside the black stone and found that the mental fluctuations inside were stronger. He gritted his teeth and pointed at the black stone again.

"Snap—"

In an instant, the black stone emitted a clear sound, and the tiny cracks that covered it turned into several huge cracks, as if it would break into pieces at any moment.

"call--"

Just then, the mental fluctuations reached their peak from the crack in the black stone, and a black shadow floated out like smoke, slowly and barely coalescing into a face in mid-air.

Chen Feng recognized it at a glance; it was the face of a demon. The other party was a powerful demon who had died, but had used a strange method to entrust his remnant soul to this black stone and was now sleeping.

"Humans? It's actually a delicious human cub. Hehehe, that's great." After the demonic face clearly saw everything around it, it stared at Chen Feng with eager eyes, as if it had seen a delicious meal.

"Are you a demon? How could you hide your remnant soul inside this stone?" Chen Feng asked calmly in the common language, which was also part of the high school curriculum.

"Hehehe, as long as I possess this human cub's body, I can hide among humans and slowly recover my strength, and then contact the demons to launch a coordinated attack on the human realm." The demon did not answer, but instead fell into his own fantasies.

"Hmph, you're dreaming, but unfortunately you're not pretty." Seeing that he couldn't communicate with the other party, Chen Feng snorted and then used the Devouring Mystic Technique.

"Buzz—"

A gray halo instantly enveloped the remnant soul of the demon, and then directly pulled it into Chen Feng's sea of ​​consciousness, intending to devour the remnant soul of the demon, believing that it would greatly increase his spiritual power.

"Gah gah gah, you actually dared to pull me into your sea of ​​consciousness, isn't this making it easier for me to seize your body?" The remnant soul of the demon race cried out with great joy, and then excitedly pounced on Chen Feng.

However, at that moment, golden light shone brightly in Chen Feng's sea of ​​consciousness, and a golden page slowly emerged. The golden light fixed the remnant soul of the demon and continuously dissolved it.

"Ah! What is this? How can there be such a terrifying thing in the world?" The remnant soul of the demon cried out in terror, but it was to no avail, and it was slowly dissolved and faded away.

As the mortgage panel appeared, suppressing and annihilating the remnants of the demonic soul, Chen Feng fell asleep on the bed, unaware of everything that happened in his sea of ​​consciousness, only feeling that he slept very peacefully.

When Chen Feng woke up the next morning, he felt incredibly energetic, almost bursting with vitality. Upon checking his panel, he discovered that his mental strength had increased by a factor of 5.

Not only that, Chen Feng discovered that there was another skill on the panel - Array Master. Then, a huge amount of memories flooded into his mind, all of which were knowledge about arrays.

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