More than two months after the outbreak of the apocalypse, Su Chen found that every time he came, whether it was a zombie or a mutated creature, there would always be a large number of mutations again almost at the same point in time.

Mutant creatures are different from immune people, their growth path is simple and rough, and their absolute numerical superiority makes every time they mutate again, it is a devastating disaster for the survivors.

Disasters don't last forever, they often last for days, and the mutated creatures slowly subside, and the survivors are able to breathe, until the mutated creatures mutate again, and the cycle repeats, becoming a disaster cycle for the survivors.

This time, the fourth-level mutant creatures mutated on a large scale, and the riot lasted for a full ten days!

In the past ten days, Su Chen has been busier than any survivor in Dragon City, except for Su Chen and Ye Yao, who can fight against the fourth-level mutant creatures, everyone else is a soy sauce character in the eyes of the fourth-level mutant creatures.

Recently, Dragon City has been overwhelmed with information to deal with, and Ye Yao, as the top manager of Dragon City, needs to deal with more affairs than any other manager, and she really can't get out of her body and deal with the mutated creatures outside Dragon City with Su Chen.

Things then evolved, the situation inside Ye Yao and Su Chen outside.

Ten days later, the eighty-fifth day of the end times broke out.

Su Chen clearly remembered that in the past ten days, he had personally wiped out seventeen fourth-level mutant creatures on the periphery of Dragon City, because the number of fourth-level mutant creatures near Dragon City had increased rapidly, and on the third day, Su Chen brought Xiaobai back to help him deal with it.

Xiao Bai, who has successfully mutated into a fifth-level mutant creature, has no interest in a fourth-level mutant creature, and in Su Chen's perception, its experience bar has been increased to fifteen.

In the past seven days, Xiao Bai has devoured thirty-one fourth-level mutant creatures, but its experience bar has remained zero.

Su Chen wasn't sure if this was because the fourth-level mutant creatures couldn't improve Xiaobai's experience bar, or if the energy generated by the thirty-one fourth-level mutant creatures wasn't enough to provide an experience bar.

No matter which one it is, it can be seen that the fourth-level mutant creatures have little effect on Xiaobai's growth.

At noon on the eighty-fifth day of the outbreak of the end times, Su Chen wiped out the seventeenth level of fourth-level mutant creatures, this was a mutated boar, and it was the only fourth-level mutant creature that he had killed in the past ten days that was not a zombie.

Cutting off the head of the mutant boar, Su Chen's body changed for the first time.

The necessary task of collecting twelve fourth-level mutant creature types has been completed, Su Chen closed his eyes and waited quietly for this most important moment.

On the way to Su Chen's promotion, Xiao Bai has been wandering around Su Chen, and Xiao Xiaobai is trying his best, one to three, sweeping the battlefield on the periphery of Dragon City.

This promotion took longer than the previous promotions combined.

On the way to the promotion, Su Chen couldn't perceive the outside world, he was forcibly pulled into the world of consciousness by the zombie illustrated book, and spent day after day in the small world created by the zombie illustrated book.

Outside world, Su Chen stood at this station for a whole day!

At noon on the eighty-sixth day of the outbreak of the end times, there was no shadow of a fourth-level mutant creature in the periphery of Dragon City, and Xiao Bai wandered around Su Chen for a day, during which even Ye Yao was isolated by it fifty meters away.

At noon, the dazzling sunlight shone on Su Chen's eyelids, Su Chen opened his eyes, looked at the familiar environment around him, and he exhaled deeply.

He didn't know how many days and nights he had spent in the small world created by the Zombie Illustrated Guide, and he didn't know how the Zombie Illustrated Book promoted him.

Su Chen looked at the sunlight outside, glanced at his watch again, and didn't react for a while.

Su Chen advanced this time, and the time was actually reclocked by five minutes, Su Chen patted his watch, unable to believe his eyes.

"Master, the time is right, you have been standing for almost a whole day." Xiao Bai and Su Chen have the same consciousness, Su Chen did not deliberately turn off Xiao Bai's consciousness to check him, it can see through what Su Chen is thinking at a glance.

As soon as Xiao Bai reminded, Su Chen suddenly found that the surrounding environment had changed somewhat, and the number of bloodstains and corpses of mutated creatures was obviously different from yesterday's, and it was indeed not the time rewind he wanted.

After determining this, Su Chen didn't think much about it, and decisively entered the world of consciousness, checked the zombie illustrated, and didn't know what good news would be there for this promotion.

Player: Su Chen

Level: 5

Total experience: 4520

Next level of experience required: 480

Skill: Treasure Eye, Variety Specialty

Special Skills: Gifts, Shadows, Domination of the Six Senses

Items: None

Title: Ultimate Immunity, Junior Evolutionary, Junior All-round Warrior

Number of lit stars: ninety-three

Physical Strengthening: Three-degree reinforcement

First note: Killing a level 5 mutant creature can get ninety-nine stars, and there are now zero stars

Second note: We are now in a special stage, and there is no need for promotion conditions (there is a risk of failure to advance)

System prompt: 1090 will be deducted from experience accumulation

System Prompt: Obtain the title of Evolver and undergo a complete transformation of your body

-----------------------------------------

Su Chen, who was successfully promoted to a fifth-level immune or fifth-level evolutionary, did not get the new skills he wanted, but after reading the basic information provided by the zombie illustrated book, he was very satisfied with the results.

The XP Potion does not increase the amount of XP it costs, and the amount of XP it consumes is the same as that of a Level 4 Immunity.

The only thing that Su Chen cared about was not the title of Evolver, but the second note, which was related to his requirements for advancing again.

This time, there are no longer all kinds of requirements for promotion as in the past, and the system directly indicates that there is no need for promotion conditions, but there is a risk of losing the promotion.

The system did not specify how high the probability of risk was, which meant that the probability of Su Chen's first failure to advance was very high.

As for whether the experience will be deducted after the promotion fails, or whether it will be a few days before the promotion can be re-promoted, the system does not have a clear prompt, and Su Chen can only guess.

Another point worth mentioning is that Su Chen can still gain experience points by killing second-level mutant creatures, but now he can only gain a little experience by killing ten second-level mutant creatures.

Although the experience points that can be obtained have decreased, the overall number of second-level mutant creatures has increased significantly, and Su Chen does not suffer.

Overall, this promotion did not bring surprises to Su Chen, but everything was developing in a good direction.

This time he was promoted to the title of Evolver, Su Chen was not surprised, as early as after the battle with Pikadi, Su Chen took the trouble to study several of his titles and understand the difference between Evolver and Immunity.

The difference between an evolutionary and an immunizer, just as the difference between an immunized person and an ordinary person, is a qualitative difference, not something that can be filled by quantity.

According to the Zombie Illustrated Book, no matter how bad the potential of the immunizer is, as long as he can continue to improve his combat power, after being promoted to the sixth level of immunity, his body will transform itself and become an evolutionary.

The lower the level of the evolutionary title, the higher the potential of the survivor and the longer the road they can take in the future.

Becoming an immunizer means that you can be immune to corpse poison, but the viruses of some mutated creatures are still immune, but becoming an evolutionary can be immune to the viruses of all mutated creatures, even if the level of the mutated creatures is higher than that of the evolutionary, you can still be completely immune.

The emergence of evolutionaries seems to be used to counterbalance the rapid development of mutated organisms and create living space for human beings.

The advantages of the Evolver are numerous.

Completely immune to viruses brought by mutant organisms. With each level of advancement, the body can transform itself. It can help the body to accept new things faster and better, and promote all-round development.

The advantages of the evolutionary can be developed all the time as the evolutionary continues to advance, just like the original immunizer, completely widening the gap between the ordinary and the ordinary people.

After becoming an evolutionary, the probability of obtaining skills will also increase, like Pikati, Su Chen suspects that every time he is promoted to the next level, he will have new skills.

In general, there are many advantages of the evolutionary, and it is difficult to find its shortcomings, and in Su Chen's eyes, he can't find the shortcomings of the evolutionary at present.

The title of Immunity can increase the combat power of the Immune by 10%-30%, while the title of Evolver, even the most junior Evolver, can increase by 20% at first.

These can all be stacked, otherwise with the basic combat power of the evolutionary, it is impossible to defeat the zombies of the same level no matter what, let alone other mutated creatures.

Su Chen, who was promoted to a fifth-level evolutionary, had the same basic combat power and values, and all indicators were kept at 800, plus various bonuses to the title, so that his basic combat power could reach 1280.

Among them, the Ultimate Immunity has a 30% Peak bonus, a Junior All-Around Warrior 10%, and a Beginner Evolver 20%, providing him with a 60% bonus!

Su Chen, who had been promoted to a fifth-level evolutionary, was also able to consult the basic information of fifth-level mutant creatures.

They can mutate into fifth-level mutant creatures, and they are not ordinary in existence, but they will have some outstanding points, such as speed, strength, defense, agility, perception, etc.

The fifth-level zombies provided by the Zombie Illustrated Book, the weakest basic information, in addition to vision, can reach at least 1000 in various indicators, and the prominent points will be 100 points higher than usual, or even more.

And mutant creatures, judging from the basic data, their average value reaches 1100, which makes them easy to surpass the zombies of the same level, and the gap between zombies and mutant creatures, with continuous mutation, there is already a significant gap.

Zombies and mutated creatures have a chance to get the title, and each title also has a combat power bonus for them, as for the bonus percentage, the zombie illustrated book is not recorded.

In general, Su Chen's basic combat power can compete with zombies of the same level, but if he fights with mutant creatures of the same level, he will be at a disadvantage if he does not use skills or special skills.

Of course, this is only the early stage of promotion, as Su Chen continues to kill mutant creatures of the same level, even if his stats remain the same in the Zombie Illustrated, his true basic combat power will change significantly.

This is not only manifested in Su Chen, but also in all the fifth-level mutant creatures, the values provided by the zombie illustrated book used to rarely make small mistakes, but now it is only for reference and cannot be fully trusted.