In the face of the attack of a large number of "mutant rat people", with the combat power that the Yan Group currently has, it can only take passive defense.

Except for Xie Long and Zhou Hao, who have reached the peak of B-level, most of the other Yan Group fighters are still at the level of C-level and D-level.

It's okay when facing some giant rats, although these are of different sizes, the smallest ones are like wolfdogs, the largest ones are even elephant-like giant rats, and the danger level is different, but in any case, they are just animals with no intelligence.

As long as the number of giant rats does not reach an overwhelming scale, the Yan group of warriors can still eliminate each other if they cooperate with each other.

But those treacherous and cunning underground rat people are not so easy to deal with, attacking, sneak attacking, assassination, poisoning...... Even the tunnel battle of "Ming Xiu Plank Road, Dark Chen Cang" has been used, and it is obviously impossible to solve it with a few mouse traps and a few sugar cubes.

Fortunately, Xie Long was also a special soldier on the special front before they became unrestricted warriors, and they were also proficient in various combat methods.

In addition, with the backing of the earth's civilization, not only is the supply sufficient and well-prepared, but also a large number of high-tech instruments and equipment, and the assistance of black technology overrun equipment, which has blocked wave after wave of attacks by the rats.

By dissecting the corpses left behind by these underground rat people, Su Xiaoke, a female scholar, found that these rat people were not the same as Xie Long, who were infected with bestiality and produced mutated "beast rat people", or "rat people"!

People are born like this, they are neither born "beast rat people", nor are they acquired "mutant rat people" who are infected with bestiality and mutated, they are "rat people", humanoid creatures evolved from mice!

It's like Darwinian evolution, which holds that humans evolved from monkeys.

These underground rat people evolved from mice, but their life forms are probably slightly lower than the modern humans on the earth, and the evolutionary level is slightly lower.

It is almost equivalent to the stage of "late ape-man" who has not yet shed the fur on his body, but its intelligence is obviously higher than that of "late ape-man", close to the level of "late sapiens", and even from the perspective of their behavior, their IQ may be even higher!

Although I have seen a lot of strange humanoid species in different dimensional civilizations, this discovery still amazes everyone!

Because judging by the theory of evolution, if these nezumi are given enough time, they may not be able to evolve like humans and have a fairly high level of civilization!

According to Bai Yuxi's time of time, through the underground dwarfs' collection of information related to the underground tribes around the "Near-Earth City".

Knowing that this kind of underground rat people call themselves "Ricka people", this name does not mean much to Bai Yuxi.

Just as humans evolved from apes don't call themselves "ape people", rat-evolved Ricka people naturally don't call themselves "rat people" or "rat people".

They, they, or the Ricka people who should be relatively respected, called "them", are located in a certain area on the other side of the "Near-Underground City", and they are actually one of the most powerful races among the hundreds of tribes in the underworld, and their huge number can be regarded as one of the few powerful races in the underground world after the mite spirits!

In this underground world, although the individual combat power is not the strongest, it has a relatively high civilization system, occupying half of the power division of the underground hundred races, suppressing some individual strength, but the small race is helpless.

This is also the main reason why the Ricka Rat Settlement, which is far away from the underground cavern where the anomaly is located, is able to cross the border to attack the forward base.

With their numbers, if they want to forcibly pass through the territory of a certain underground race, the other party really can't completely eliminate it...... The rat's ability to make holes is very strong!

It is said that the secret passages of the Ricka Rat are spread throughout the entire perimeter of the "Near-Earth", so that they can come and go like the wind, haunting any corner of the "Netherlands-Near-Layer"!

Many underground races have a good hand of animal taming skills.

Just as mites have the talent of "insect affinity", the Ricka rat people are also naturally capable of driving the giant rat known as the "Ricka Gopher" to their own use.

In addition to enslaving a large number of Ricka gophers and digging secret passages for themselves, they also trained some adult giant Ricka gophers to use as mounts, and even used as reserve food in times of famine.

According to the underground gnomes, the Ricka Rat seems to hold some kind of mysterious power.

This is also the reason why the Ricka rat people are able to thrive so much near the underground city.

However, legends like this are found in the ancient legends of almost every underground tribe, after all, they have been trapped in this "gloomy region" for I don't know how many years, and it is difficult to say that there has not been a period of time in history when their ancestors have risen.

Just like the underground gnomes, according to the proud boast of the Greystone Ball, their ancestors once almost ruled the entire "Gloomy Territory", and almost cracked the secrets of the "Near-Earth City".

Until their ancestors were hit by an arrow in the knee...... Well, the main reason is that their ancestors were overflowing with curiosity, and they wanted to explore the "near-underground city" by relying on the strong strength of the underground dwarf clan at that time.

And then...... There was no more, and the underground dwarf clan was inexplicably decayed and reverted back to the situation of a medium race.

This seems to be the process that each race must go through after it is strong, no matter which race rises, their decline is almost related to the "near-underground city".

I don't know how many years have been, the hundreds of tribes in the underground have fallen into such a strange circle, rising and declining in a constant cycle.

This is also the main reason why the "near-earth city" has become the "death forbidden zone" of the underground world.

Knowing that the "Near-Earth City" will bring disaster, why would generations of underground clans still violate it after their family group prospered?

This has something to do with some of the legends in the "Gloomy Regions".

Some say that there are treasures hidden in the "near-earth city", and some say that there are ancestral artifacts left in the "near-earth city".

It is also said that as long as you have the approval of the "Near-Earth City", you will be able to become the true ruler of the "Netherlands".

It's a pity that the truth of what is in the "Near-Earth City" has disappeared into the fog of the "Near-Earth City" with those curious ancestors, and all that is left to future generations today is only terrifying legends.