"The monsters outside the door are probably all dead!" Yang Xuan glanced outside the door through the hole. Except for the five headless corpses lying on the ground, there was no one else.

Yang Xuan's arms were covered with blood, and he sighed secretly in his heart. He squatted down, split open the five heads one by one with a knife, and took out five white crystal cores from inside.

"What is this?" Ye Feng, who originally thought he was a murderer, was suddenly attracted by the crystal core in Yang Xuan's hand.

"I don't know either." Yang Xuan shook his head and said.

"You don't know?" Ye Feng obviously didn't believe it. If Yang Xuan didn't know, why would he deliberately take out the crystal core from the monster's head?

Yang Xuan didn't bother to say more. He just killed five mutants, and his heart didn't feel any joy, but felt heavy. Five people died by his hands just now!

"Huh?" Suddenly, Ye Feng looked at the crystal core in Yang Xuan's hand with some surprise, and he said with some confusion: "Show me this."

"Oh." Yang Xuan casually threw one to him.

"Sure enough!" After holding the crystal core, Ye Feng looked at it for a moment and suddenly exclaimed: "This crystal core contains a lot of energy. No wonder these mutants have to cut off their heads to die. It seems that it is

These crystal nuclei are causing trouble."

"Oh? What did you see?" Yang Xuan said in surprise. He had always thought that this crystal core was very useful. It seems to be true?

"There is a lot of energy in this crystal core. If it is absorbed, it will definitely have a very good effect. With this crystal core, I estimate that I will be able to reach the foundation building stage soon!" Ye Feng said in surprise.

"Really?" Yang Xuan's heart moved and he said, "Then how to use this crystal core?"

"Uh!" Ye Feng was stunned immediately. He frowned and looked at the crystal core in his hand with some distress.

"Huh? There is liquid in this crystal core!" Ye Feng suddenly said in surprise.

Yang Xuan picked up a crystal core and took a look, and found that there was indeed a flowing liquid inside, silvery white, in the center of the crystal core.

"The energy is emitted from this liquid. I can feel it with my 'qi'. As long as I break the crystal core and drink this liquid, it should be enough." Ye Feng thought for a moment and said... He started to get stronger.

Now, upgrade to fight monsters. Brothers, if you have recommendation votes, help me smash them...(*^__^*)
Chapter completed!