Traveling through a book to save the heroine in the apocalypse? Are you crazy?

"System, do your best. I don't need too high a power."

The system found this somewhat amusing. Its host was so smart that he must have known what was going on when the system had collected all the crystal cores.

But she couldn't stop herself from doing what she wanted to do, just like she couldn't stop herself from doing what she wanted to do.

But the system still didn't want Ye Yiyi to worry, so it only spoke before transmitting energy.

"I understand host, don't worry I will be fine no matter what the outcome is."

Seeing this, Ye Yiyi just took a deep look at the system and swallowed back what she wanted to say. The two sides have been together for so long and know each other's personality.

This is already the situation. It is better to accept it calmly than to waste time arguing. She believes that the system knows what is going on. Thinking of this, Ye Yiyi closed her eyes.

Upon seeing this, the system's pair of yellow bean eyes gradually showed light blue halos, and then the outstretched squirrel hand gradually turned into flowing data, and these data stretched longer and longer until they reached Ye Yiyi's eyebrows.

With her eyes closed, Ye Yiyi felt an extremely warm force surging into her body. After circling in her brain, it made her mind clearer, and then it went down along her spine and spread throughout her body.

Her body gradually became warm. Although it was winter, Ye Yiyi felt like it was spring.

The whole process was very comfortable and there was no discomfort at all. Even the hidden injuries inside the body began to heal as the level of supernatural powers increased.

Ye Yiyi just felt that her health couldn't be better.

The whole process took no more than half an hour. When Ye Yiyi suddenly opened her eyes, a light blue light flashed across her eyes.

Before Ye Yiyi could fully feel the power of her body, the system in front of her fell straight down from mid-air at an extremely fast speed.

Fortunately, Ye Yiyi reacted very quickly and held the system's squirrel body in her palm in just a moment.

Even when the system was in hibernation, it never fell from the air. Combined with the fact that the supernatural energy was almost spreading throughout her body, Ye Yiyi was not a fool and she immediately guessed that the system had transferred all the energy to her.

My nose felt sore and my eyes instantly filled with tears. I wanted to say something but it got stuck in my throat and I didn't know what to say because I was the beneficiary. Everything I said now would seem hypocritical.

The system seemed to sense Ye Yiyi's mood. The blue light in Huangdou's eyes was flickering, but he still held on to the remaining energy to speak.

"Host, don't worry. I will be fine. It's just that you will have to face the danger alone."

It's clearly the system sound of the tablet, but now it's intermittent, as if a power outage will occur at any time.

This was the first time Ye Yiyi had seen the system so weak after coming to this world for so long, so weak that it was difficult for her to even speak.

A tear fell directly on the system's face, and Ye Yiyi spoke in a hoarse voice.

"System, you'd better be okay. If you are in trouble, I won't do the mission. I'm not worthy of you."

It was clearly just a relationship of interest at the beginning. It had to do the task itself and I could get benefits from it, but after the payment was made, there was no relationship anymore.

She thought that the system didn't know about emotions and would make its own decisions, but when did it change?

As if being amused by Ye Yiyi's remarks, Ye Yiyi heard the tablet's silent system sound make a laugh for the first time, but it was extremely light and short, and was covered by the noisy sound outside.

"In fact, host, I have always wanted to say sorry. I failed to protect you once or twice, and I want to say sorry again this time."

Perhaps it was because it had just gathered some strength or the body began to slowly absorb the crystal core, the system's speech became clearer.

"You have to face this danger alone. All my energy can only help you upgrade to the middle stage of the seventh level, but with the various martial arts I taught you, I believe in you."

The tears in Ye Yiyi's eyes never stopped falling, and they fell drop by drop on the system's face. The system seemed to want to stop Ye Yiyi from crying, but it really had no energy left and could only talk about the key points.

"Host, go ahead. I'm a little tired. Don't worry, host. I'll just be in hibernation for a day or two. Really."

Maybe it was because it really had no energy left. After the system said this, the blue light in Huangdou's eyes faded away. In just a moment, his eyes closed and there was no movement.

Then his entire body turned into data and merged into Ye Yiyi's body.

Looking at her empty hands, Ye Yiyi closed her eyes tremblingly.

Before Ye Yiyi could think more, the wooden door was suddenly slammed open. When she turned around, she saw countless hideous zombies running towards her.

In fact, Ye Yiyi had heard them early in the morning, but they didn't come in and the system fell down again, so Ye Yiyi naturally had no time to take care of them.

But now that they are right in front of me, I have to kill them.

Ye Yiyi's eyes glowed with a light blue light, but as soon as she raised her hand, the whole room suddenly dropped more than ten degrees Celsius, and the walls and the floor were covered with frost in an instant.

The zombie that came in was frozen in place before it could get close to Ye Yiyi. It was wrapped in ice while maintaining its ferocious movements, and could not move at all except for its eyes.

Ye Yiyi exhaled, and with a wave of her hand, a Tang sword made of ice appeared in her hand.

He made a handsome knife flower and rushed straight out.

But in a moment, Ye Yiyi appeared at the gate. After coming out, Ye Yiyi didn't even turn her head. She raised her hand to freeze all the zombies in the corridor.

Then she jumped straight down from the tenth floor without even looking. The moment Ye Yiyi jumped, dozens of frozen zombies in the room were separated from their heads and bodies.

Ye Yiyi, who caused all this, raised her hand when she was about to fall to the ground. A slide made of ice instantly appeared under her feet, helping her to buffer the danger of falling directly to the ground.

But before Ye Yiyi landed, zombies from the fifth or sixth floor rushed towards her.

Ye Yiyi was amazed at the jumping ability of these zombies, but there was no panic on her face, and she had a cold expression.

Seeing this, Ye Yiyi fell to the left, pulled the edge of the ice slide and made a 360-degree rotation, then stood up from the right side of the slide. The zombie that was trying to pounce on her missed and slid down due to inertia.

But the more zombies flew down, the more they pounced. When the zombies pounced for the second time, Ye Yiyi directly froze the zombie in front of her, speeding up her descent.

Seeing that the zombies were about to fall down, Ye Yiyi bent down and passed by the frozen zombies.

After Ye Yiyi passed by, the frozen zombies smashed the ice slide to pieces.

Because of this incident, the slide, which was originally made of ice, became unstable. Ye Yiyi could only keep the slide going with one hand and use the ice to clear a path with the other hand.

But there were too many zombies, and seeing that they were only one or two floors away, Ye Yiyi gave up on the slide and jumped down.

He raised his hand to freeze the zombies surrounding his place of residence, and then added a layer of smooth ice on top, so that Ye Yiyi had a place to stay.

But how could the zombies let go of Ye Yiyi, this delicacy that was right in her mouth? As soon as she landed, more than a dozen zombies rushed towards her.

Seeing this, Ye Yiyi raised her hand to form an ice shield and threw it out directly, knocking down the zombie in front of her. Because of the pressure, a small space finally appeared in front of her.

Ye Yiyi did not dare to delay at all and stepped on the zombies all the way to the frozen ground. Because there were zombies everywhere, if Ye Yiyi dared to land, either death or assimilation would be waiting for her.

Even so, there were still zombies flying towards Ye Yiyi. In order to save energy, Ye Yiyi dodged whenever she could, and would only fight back when she really couldn't dodge.

However, Ye Yiyi was not panicked. After making sure she had reached her destination, she used both hands to simultaneously exert force and dozens of ice spikes flew to both sides at the same time. The power was no less than that of firearms.

After eliminating the zombies flying towards her from both sides, Ye Yiyi waved her hand, and an ice ladder appeared above her head, leading directly to the building opposite.

Ye Yiyi jumped up the stairs as soon as they were formed, but the ice under her feet instantly cracked as soon as she got there, and all the zombies were squeezed together.

But Ye Yiyi had already stepped onto the ice bridge and was heading upstairs with all her might, without even looking back.

Thanks to the current weather, Ye Yiyi saved a lot of energy when using her supernatural powers.

However, the zombies nowadays have become much stronger, and even the most common zombies have the strength of a first or second level psychic.

So after Ye Yiyi stepped onto the ice bridge, they all followed closely behind her, and Ye Yiyi naturally knew who was following her.

But this ice bridge is extremely narrow, and one can only move straight forward. If one moves any more vigorously, the entire bridge will collapse.

Ye Yiyi is undoubtedly walking on a tightrope now, and if she is not careful she will fall into the abyss.

The next moment, because there were too many zombies coming up, the ice bridge began to slowly break behind him.

Seeing that they were about to reach the building opposite, Ye Yiyi simply jumped with all her might and climbed onto the railing of the corridor at the last moment.

But the zombies behind him were not so lucky, falling straight down like dumplings.

But Ye Yiyi didn't dare to relax at all. The moment she grabbed the railing, a zombie in the corridor revealed an extremely corrupt face and pounced straight towards Ye Yiyi.

Fortunately, Ye Yiyi is now very sharp-eyed and sharp-eared, and she dodged it quickly.

At the moment the zombie fell, Ye Yiyi stood on the guardrail with force.

The moment the zombies in the entire corridor saw Ye Yiyi, they all pounced on her.

Ye Yiyi's eyes flashed and she swung out an ice knife and stabbed it directly into the head of a zombie that was rushing towards her. Then she instantly turned into a shield and pushed the zombie on the side to the stairs, and directly sealed it with a layer of ice. Then she turned around to deal with the zombie that was about to pounce on her from behind.

However, the moment she turned around, a Tang sword made of ice suddenly appeared in Ye Yiyi's empty hand, and she chopped down the zombies in the front row in a flash.

Ye Yiyi is very experienced in clearing out the zombies in the corridor, even though the zombies nowadays are only at the first or second level of psychics.

But now Ye Yiyi is a mid-seventh-level mutant, and her physical strength and reaction speed have improved a lot.

But after a while, the zombies fell down in a group, and finally the zombies were pushed to the entrance of the stairs and the entire entrance of the corridor was sealed.

This gave her time to catch her breath, but considering that her supernatural powers were being consumed very quickly, Ye Yiyi also took the opportunity to store the zombie crystal cores on the ground into her space.

And there is still time to clean up the crystal core, while thoughts are constantly running through my mind.

I just spent so much time killing zombies here and no one came to help me, which proved that the remaining humans were fighting in other areas.

Then I shouldn't waste my time and supernatural powers in this place.

The most important point is that Ye Yiyi doesn't think she can fight alone against at least tens of thousands of zombies. If there are only three or four thousand, she can still give it a try with her ability.

After packing everything up, Ye Yiyi looked at her current location and calculated what to do next.

The buildings in this area were all designed by myself. When designing, I took into account what to do if zombies attacked, so each area can be divided.

Looking at the densely packed zombies downstairs and the zombies upstairs who felt they were falling.

At the same time, many zombies saw that they could not enter through the stairs on both sides and were already climbing the outermost wall.

But Ye Yiyi acted as if she didn't see these scenes and was carefully calculating the route she was about to take.

Without the system, Ye Yiyi had to be more careful in her actions. It could be said that if she took a wrong step, she would be doomed.

Thinking that there were still many zombies outside, Ye Yiyi did not plan to let all the zombies inside go out.

Although it is impossible to eliminate all the zombies here, Ye Yiyi can lock up the zombies in these areas inside, and wait until all the zombies outside are eliminated before dealing with the ones inside.

Thinking of this, Ye Yiyi's plan and route were formed. At this moment, a pair of highly rotten hands suddenly stretched out from the guardrail.

Seeing this, Ye Yiyi stepped directly onto the guardrail, looked at the zombies under the guardrail, then waved her hand and built an ice ladder as before, and walked to the other side of the building in the same way.

The difference is that this time there are no zombies following behind, so Ye Yiyi can be much safer along the way.

Because Ye Yiyi was the only living person in this area, more and more zombies squeezed in and followed Ye Yiyi below.

However, Ye Yiyi did not go down at all. Now Ye Yiyi only had to deal with the zombies in the place where she settled, which was not difficult.

After moving two or three buildings, Ye Yiyi finally arrived at the outermost building, which was also the main switch for shutting down these areas.

In order to deal with emergencies, two mechanisms were set up at that time, one on the first floor and one on the roof.

In this situation, not to mention Ye Yiyi, even Yang Luoliu would die if he went to the first floor alone.

So Ye Yiyi removed the ice layer that was blocking the stairs without saying a word.

The moment the ice retreated, zombies swarmed in.

Seeing this, Ye Yiyi simply stepped back two steps to make room for the front, and the blue light in her eyes became brighter.

One hand held a knife, and dozens of ice spikes were suspended in the palm of the other hand.

At the moment when the zombies were about to pounce, the ice spike in his hand instantly flew out, and the zombies in front of him fell to the ground.

Then the Tang sword in her hand swung with an extremely fast knife flower, and Ye Yiyi attacked at a speed that ordinary people could not achieve.

Bend, chop, pick, stab and dodge.

Ye Yiyi's speed was so fast that only an afterimage was left. All the martial arts she had learned in this year were fully demonstrated here. With her body strengthened by superpowers, Ye Yiyi stood on the roof very easily.

Just as he was about to open the door and go in, he was blocked by the sudden fire.

When Ye Yiyi turned around, she saw two pale-faced people standing at the other end of the corridor.