After eating, the crowd came to the great city wall. The place has almost been repaired, and the huge gate has been re-strengthened and a new gate has been installed. Outside, piles of monster corpses can be seen everywhere, some large excavators are digging pits to bury them, and the corpses of more than 20 crocodiles are impressively listed.

With the help of everyone, Li Huanyu went down to the city, and then walked to the crocodile corpse and stopped. At this time, when he looked at these crocodiles closely, he found that they were really big! Walking to the head of a crocodile, there was a big house, Li Huanyu looked at it, with his current physical strength, it was a little unrealistic to climb up.

After a few words with Duan Yangyang and a few others, let them dig up the crocodile's head, and be careful. Everyone was puzzled, but Li Huanyu asked them to dig, and they had no other opinions, and the crocodile was dead, and the defense of the scale armor had also decreased a lot, so it was convenient to pick up a big knife and cut it.

Twenty minutes later, there was a pile of blood-red beads on the ground in front of Li Huanyu, about the size of a fist, more than twenty. Li Huanyu sensed it, the more he looked at it, the happier he became, this is a demon core! Although it was infected into blood red, but he could purify it, thinking of the huge energy contained in it, Li Huanyu's heart blossomed, if there were enough demon cores, not only could he break through, but Cao Lili and a few people could also do it!

It's just that after killing for so long, he also understands that such a big and strong crocodile has a demon core on it, and it will be difficult to think about it, unless it ...... His heart trembled a little, he thought of where there would be more, but now he couldn't get it, because although there would be a lot of demon cores there, it would be more of a crisis!

"What is this?" Although Duan Yangyang and the others were full of combat power, they were cultivators after all, and they didn't know what Li Huanyu was so interested in.

"Could this be the legendary demon beast demon core?" Li Huanyu was still pondering, and before he could answer, Cao Lili couldn't wait to ask.

This made Li Huanyu a little surprised, and secretly thought in his heart, it seems that the dragon protection clan really has some cultivation inheritance, and they even know this. However, he didn't say anything else, just thought about it for a while, and explained: "This is indeed a demon core, but it is infected, even if it is me, it is very troublesome to purify, but this can allow us to improve our cultivation." ”

Hearing that he could improve his cultivation, Duan Yangyang immediately opened his backpack, packed up this pile of demon cores, and looked around, for fear that others would come and grab it.

Li Huanyu saw it and couldn't help but wonder, these brothers are good at anything, they are just a little black-bellied and love to take advantage of small advantages, but how did he know that this was all influenced by him?

After staying outside for a while, Li Huanyu took everyone back to the bedroom, at this time he was the only one in this room, and he needed to quickly recover his strength. The divine soul has been squandered almost, but with the existence of a physical body, he can recover quickly, but it will also recover to the limit that the body can bear, and if he will burn in the future, it is estimated that he will not be so lucky. As for the spiritual power, there is no one in the air, and it is a problem to recover, so I took out a few spirit stones, and sucked them into powder every minute, and I only recovered a little.

He shook his head a little helplessly, but his eyes fell on Duan Yang's backpack with a demon core, and his eyes suddenly lit up. Opening the backpack, looking at the demon core inside, and feeling the huge energy contained there, Li Huanyu groaned happily. He took out dozens of spirit stones again and arranged them according to the appearance in his memory, he was a master of playing formations, and a purification array was quickly completed.

After setting up the formation, he checked it carefully, because he was really not rich now. After checking that it was okay, he put more than twenty demon cores into the center of the formation, and then bit his finger and dripped a few drops of blood in the center of the formation. As the blood was low, the formation lingered with a milky white light, which was very holy, enveloping the demon core in it.

The sound of "Woo La" was non-stop, and it was the light of purification and the blood curse in the demon core that were consuming each other. The energy in the spirit stones was consumed very quickly, and Li Huanyu looked at it very seriously, and took out a few spirit stones again from time to time to replace them. The blood-red spell patterns in the demon core are constantly entwined and rising, intertwined with the holy milky white light, canceling each other, and it is very tenacious. However, no matter how strong the blood curse is, it is waterless duckweed after all, and after Li Huanyu changed the spirit stone seven times, the demon core finally turned into more than two dozen sky-blue translucent crystals.

"Luckily, it's actually water-attributed, not bad. Wiping the cold sweat on his forehead, Li Huanyu spat deeply, although it was difficult, but it was done after all.

The demon core is divided into five attributes: gold, wood, water, fire, and earth, gold is strong, wood is pure, fire is strong, and the soil is heavy, but the water attribute demon core in front of him is the most inclusive, and it also saves him from refining again.

Grabbing one casually, feeling the surging energy contained in the demon core, Li Huanyu finally smiled, this method has been achieved, as long as there is a steady supply of demon cores in the future, then he, even Yu Manru and others, can cultivate to a higher and deeper realm!

Some couldn't wait to grab one again, one in each hand, silently recite the mantra, and practice cross-legged. With the operation of his exercises, a trace of strange energy was absorbed from the demon core, and as soon as that energy entered the body, Li Huanyu trembled, this feeling was really wonderful! After all, the demon core was transformed by the energy essence of the demon beast, it was very pure, and he absorbed it, just running it in the body for a week, and then it would be directly absorbed into the dantian.

Three hours later, with two clicks, the demon core in Li Huanyu's hand was shattered, which was because of the sequelae of the energy being quickly drained.

"It's really fast!" Looking at the few demon cores in his hand that became like broken stones, Li Huanyu sighed twice, and felt the spiritual power in his body, but it was completely recovered, and there was even a trace of refinement! In fact, this is not surprising, after all, it takes a lot of aura to cultivate to the Yuan Infant Stage, but the aura required to restore to the Yuan Infant Stage is not so terrifying.