Now the hottest news in the safe zone is about the crystal core in the zombie's head.

Just yesterday afternoon, the security area temporarily issued a notice to use materials to acquire this crystal nucleus. No matter who you are, you can exchange crystal cores for food, and you can get as much as you have.

Ten nuclei the size of the fingernail of the little finger can replace one pound of rice.

In the eyes of Ruan Ning, who knew the truth, this exchange rate was already very low.

But for others, this can be regarded as a happy event from the sky. No one could have imagined that this kind of thing that no one usually noticed could be exchanged for so much food.

Nowadays, there is only one free meal a day in the safe zone, which is simply not enough to satisfy one's appetite. Now, with this good opportunity to earn food, who can not be tempted.

This high return can even make some ordinary people willing to risk their lives and leave the safe area to dig the so-called crystal nucleus.

Of course, it's not that no smart people found something wrong. They didn't choose to sell the crystal core to the safe area, but kept it by themselves.

However, such people are still in the minority. The end of the world is coming, and the most important thing is to survive. The hunger in front of them makes it difficult for them to think about the future.

Security zone door.

Ruan Ning and his party just came here, waiting for the guard at the door to let go.

Coming all the way from the safe area, the word they heard the most from the survivors was the crystal nucleus, and there were many people standing at the door who wanted to go out to get the crystal nucleus or were hesitant to go out.

"I heard that the things in the heads of zombies can really be exchanged for food. It's not that someone is playing tricks to deceive us." Some people did not believe.

"Brother, this is a notice issued on the security area, and there is still a fake. I saw someone take a week's food from the window early this morning." The person standing next to him explained.

"There really is such a good thing." The person who asked the question just now was still a little hesitant, but it seemed that he was still moved, and his eyes were eager to try.

Another person came over and interjected, "Wake up, it's not so easy to exchange crystal cores for food now."

"What's the matter, doesn't it say how much is changed?"

"That being said, in the period from yesterday afternoon to this morning, all the zombies near the safe area were swept away, and there was no zombie with a crystal nucleus to be found. Don't think about picking up leaks, of course, if you're going to kill zombies, then I didn't say sigh, but unfortunately I'm a step behind, I should have picked up more of this thing outside the safe area back then."

Some people are happy and some are worried, after figuring out what the crystal nucleus is. Many people regret why they didn't dig out the heads of the zombies in the first place.

Compared with the others, Ruan Ning and his party looked more calm, because they knew about this earlier than these people, and even knew what the role of the crystal nucleus was, and why did the security zone spend so much material to acquire this.

Gu Yicheng stayed that day to tell Xue Chen about the crystal nucleus, and he casually threw the bag of crystal nucleus that Ruan Ning refused to accept to him.

Xue Chen trusted Gu Yicheng very much in his heart, and he experimented with the method he said that night, and the result was really effective, and the effect was remarkable. Then he asked Xie Fei, the fire-type power user in the team, to use the crystal nucleus to improve his power.

Naturally, Ruan Ning was not left behind by Xue Chen.

So when she took the half bag of crystal nuclei from Xue Chen, she was still a little dazed. She didn't expect these crystal nuclei to go round and round and finally returned to her hands.

At first, the male protagonist gave her so many crystal cores alone, but Ruan Ning felt ashamed to refuse, and was afraid that the male protagonist had ulterior motives. But now that the other two power users in the team have accepted the crystal core, the problem she was worried about no longer exists, and Ruan Ning has no reason to refuse.

Now that Ruan Ning heard that the people around him were discussing the crystal nucleus, he suddenly thought of this, and couldn't help but glanced at the male protagonist beside him.

The day for their departure has been set, and it is today.

But before they set off for city b, they had to go somewhere.

They basically have all the supplies ready, only one thing is missing, and that is gasoline.

It is not realistic to go to the imperial capital by walking only, so it is best to drive if you can, but you need gasoline to drive. Gasoline is not easy to change in the safe area, it can even be said that it is impossible to change it at all, and they still have to drive such a long distance, so the oil can only find a way on its own.

If there's no space, they'll find ways to collect gasoline on the road, but now, they want to go straight to the big vote

Xue Chen inquired about a piece of news from someone he knew. There was a gas station five kilometers away from the safety zone. On the afternoon before the end of the world, a fuel tanker happened to be parked there.

And now, there's a good chance that tanker is still there.

That's right, they wanted Ruan Ning to take as much gasoline as he could from the tanker.

Ruan Ning actually wanted to say that she could take away the entire tanker truck, and even a few more ones would be fine.

"Ningning, come and share a car with us."

After leaving the safe area, Ruan Ning consciously walked to the team's car. Just as she was about to get up, she heard the male protagonist ask her to go there.

The male protagonist and their off-road vehicles have been modified. They look ordinary from the outside, but they are actually stronger and more durable than Xue Chen's car, and they can hold more supplies.

The two brothers and sisters were going to sit in the same car, of course Xue Chen could not have an opinion. Moreover, Ruan Ning is now carrying most of the materials in the team, and is the key protection target. Of course it's where it's safer to stay.

So he readily let Ruan Ning sit there, and helped her put her backpack into the car over there.

The whole person was arranged to be a clear Ruan Ning ""

The car slowly drove out of the perimeter of the safety zone, and Ruan Ning turned to take a last look at the safety zone behind him.

I've been here for a while, and now I suddenly leave, and I'm still a little reluctant.

After all, they are unlikely to come back in the future.