Through Kang Xiaodao's description, Lin Feng also knew some unknown conspiracies in the military area.

It turns out that the serum researched by Dr. Zeng is not an absolute success, there is still a certain probability of failure, and the result of the failure of the serum is that the user will have some failed mutations and become monsters similar to zombies, during this time, there have been more than ten such failures in the Yanhuang Military Region, but the failure rate is less than one percent, so this serum is still the best antidote for human beings, and those mutated losers were all solved by the commander's order.

Lin Feng was also a little shocked by Commander Hong's order to eliminate his own people, but he didn't say much, after all, as a person in power in the last days, this decision must still be made, and the kindness of a woman is a sin in the last days.

As for Lin Feng's younger brother, Ma Yue, he was taken away by a mysterious person on their way back, but there should be no danger, and when Kang Xiaodao wanted to make a detailed description, there was a knock on the door.

"Mr. Xiaodao, everything in the research room is ready, and the commander said to let Mr. Lin Feng go to the test first, so that he can make systematic arrangements." A soldier walked in and said earnestly.

"Okay, I know, I'll take Brother Lin over later." Kang Xiaodao nodded and responded seriously.

"Knife, what the hell is going on with this test?" Lin Feng was also full of doubts about what test he was about to do in the research laboratory, but he believed that he would know this question sooner or later, so he asked it directly, and he was not afraid of letting others eavesdrop on it.

"Oh, this test is a rough estimate of your current physical fitness, so that it is convenient to face your various training arrangements later, in fact, this plan was prepared at the beginning of the military region, but due to the limited technology at that time, the judgment of many strengths was not accurate, this time with the help of Dr. Zeng's serum, everyone's ability is easier to judge, so there is also this special laboratory to test." Knowing that there was nothing to hide from this, Kang Xiaodao also told Lin Feng in detail.

Previously, for the power changes caused by zombies or monsters infected with the virus, the Yanhuang Military Region also had a detailed hierarchy for them.

Zombies are generally judged by the number of times the virus they are infected with evolves. Generally, zombies that have just been infected by the virus, that is, the level of S1, this kind of zombie is very weak, and there is no special ability except for carrying the virus, in a one-on-one situation, generally a stronger ordinary person can clean it up. And after the virus in the zombie has undergone an evolution, that is, the level of S2, the danger of the zombie at this time will increase a lot, his speed and strength will be qualitatively improved, and he will become more bloodthirsty, but it is not particularly terrifying, like Lin Feng's current strength, zombies of this level cannot pose a threat to him. As for the virus in the zombie corpse after three evolutions, it has reached the level of S3, and they have become extremely terrifying monsters, not only with increased speed and strength, but also with a certain sense of autonomy, and will judge the strength and weakness of the opponent, which has become a very terrible predator for humans, even if it is the current Lin Feng, it is very difficult to defeat the zombies of this level without summoning heroes. As for the S4-level zombies, they are terrible existences where the virus in the body has undergone three evolutions, the zombies at this time are not just ordinary monsters, they not only awaken a certain consciousness, but even have a certain amount of wisdom, like the giant zombie that Lin Feng met in the villa area before that almost killed him, it is an existence of this level, if it wasn't for the appearance of the Ying Long team at that time, he would definitely become the other party's food. As for the zombies at the upper level, it can almost be said that they are the overlords of the zombies, the number is quite rare, and some even awaken some special abilities, but the military region now has quite little information about it.

Compared with zombies, the animals infected by the virus have also become extremely terrifying monsters in Lin Feng's eyes, generally called fierce beasts, like the multi-handed, poisonous and even silverback that Lin Feng met before, they are the best among the fierce beasts. Because of the various instincts of animals that are already stronger than humans, after being infected with the virus and becoming fierce beasts, they have become more terrifying beings than zombies. A fierce beast with a virus in its body that evolves at the S2 level is comparable to a zombie at the S3 or even S4 level. However, due to racial differences, although the basic abilities of fierce beasts are far stronger than those of zombies, the speed of evolution of viruses in their bodies is also much slower, like multi-handed and dazzling poison are only S3-level fierce beasts, only the silver back that evolved again because of devouring the giant tiger's poison source has reached the S4 level, which is already a terrifying existence that is enough to kill Lin Feng's entire team in seconds.

Originally, because human beings were afraid of being infected by the virus, there was no clear division of their strength, and the Yanhuang Military Region could only rely on the difference in their actual combat strength to divide them into Yinglong Squad, Jiaolong Squad, or ordinary soldiers. But now that there is serum, you can rely on the power of the poison source to improve your quality, and the Yanhuang Military Region can also have a relatively standard division of strength for soldiers. That is, the soldiers who have generally taken the serum are made into first-level warriors, which is naturally the S1 level in the corresponding zombies, and the second-level warriors are taking the serum and have taken a poison source to transform the existence of the body, which naturally corresponds to the S2 level in the zombies, and further up is the third-level warriors and fourth-level warriors, which correspond to the S3 and S4 levels, but because human warriors can operate weapons and have strong minds, their combat effectiveness is generally much higher than that of zombies of the same level, slightly lower than the fierce beasts of the same level, now almost the worst in the entire Yanhuang Military Region are first-level warriors, and the average has reached the level of second-level warriors, which also makes it an extremely terrifying force in the last days.

"Huh, what about you, Knife, what level are you, a fourth-level warrior or a fifth-level warrior?" After listening to Kang Xiaodao's narration, Lin Feng could be regarded as having a new understanding of the power of the end times, and at the same time, he was also very curious about what level this elite warrior of the Ying Long squad could reach.

"I've just reached the level of a fourth-level warrior, and I've been adjusting my body recently, and when I'm ready, I can go to Dr. Zeng to take the poison source I need for the next time, and I may be able to reach the level of a fifth-level warrior." Kang Xiaodao said seriously.

"Level 5 warrior, this is really amazing." After listening to Kang Xiaodao's narration, Lin Feng was also full of hope for a while about what level he could achieve without summoning heroes......