Looking at the locks of dust and cobwebs, Lin Fei found a broom and cleaned everything around until it was spotless.

Although Zheng Fangxing didn't care about these things, Lin Fei regarded him as a human being from the bottom of his heart, a complete human being, without any difference.

Looking at the gun hole on Zheng Fangxing's body, Lin Fei's nose was sour:

I don't know why, once he is infected and becomes a zombie, his recovery ability seems to be completely lost, Zheng Fangxing's gunshot wound has been so long, but there is no sign of healing, it is still a transparent hole.

"Alas!"

Lin Fei sighed:

"This time, I got back a lot of crystal nuclei, which should be able to restore your strength!"

As he spoke, he took out all the four green crystal nuclei directly from his pocket.

"Thank you!"

Zheng Fangxing's deep voice came.

"You're welcome, if it weren't for me, your strength wouldn't have regressed, so absorb it quickly!"

Lin Fei stuffed all the four energy crystal nuclei into Zheng Fangxing's hands.

"Gollum!"

The latter was not polite, picked up one, opened his mouth, swallowed it whole, and swallowed it whole.

Lin Fei watched quietly from the side.

After a while, Zheng Fangxing seemed to feel very happy, let out an excited roar, and the gunshot wound on his body recovered quickly at a speed visible to the naked eye.

After only three or five minutes, the bullet hole with the thickness of an index finger was restored, and it was impossible to tell that it had been injured.

"Gollum!"

Zheng Fangxing didn't stop, and swallowed another emerald-like crystal nucleus.

"Is the root of the zombies' strength and injuries based on the energy provided by the energy crystal nucleus?"

Watching Zheng Fangxing devour the energy crystal nucleus like eating jelly beans, Lin Fei fell into deep thought:

"Could it be that not only the system can absorb energy, but also the mutated products of zombies and even mutant beasts can absorb energy crystal nuclei to improve their own strength?"

As soon as this idea appeared, Lin Fei couldn't help but feel excited:

"If zombies and mutant beasts can use this method to improve their strength, then, will there still be a living space for humans?"

"In a hundred years, will there still be human beings in this world?"

"At this rate, it won't even take a hundred years, it will only take ten or eight years, and the human race may be wiped out!"

Lin Fei's mood was very heavy.

Just as he was thinking about this heavy question, Zheng Fangxing directly swallowed the remaining two energy crystal nuclei in one go.

"Ho-ho-ho!"

A somewhat suppressed roar came, interrupting Lin Fei's thoughts, and he clearly felt that Zheng Fangxing's momentum was rising steadily, and it seemed that there were signs of a breakthrough in promotion.

Slowly, the roar gradually became a lot quieter, and Zheng Fangxing's raging aura became restrained.