It can be said that in this world, Su Mu claims to be second in terms of knowledge of Unota, and no one dares to say that he is the first.

The number of the Unota group is like stars in that world. Although their strength is in the middle and lower in that world, they still have a place in that world with their extraordinary fecundity, which should not be underestimated.

Unota's ethnic groups are very peculiar. Although they are numerous and have their own language and cultural customs, they did not create a country, but existed in the form of a tribe.

The mountain worm tribe is one of the vast Unota tribes, with a population of about 50,000. Because of the cruelty of the world and the scarcity of living resources, there are very few old and frail Unota people in the tribe. When they reach a certain age, they will be formed into death squads by the tribe to make the final contribution to the tribe.

The Unota soldiers that Su Mu killed a month ago were the death squads sent by the Mountain Worm Tribe.

Old and weak does not mean that they are weak, on the contrary, they are more lethal than ordinary fighters.

This is because they have rich combat experience, mature skills and fearless death.

Looking at the leopard from the inside, Wunota's strength should not be underestimated.

At the same time, the infancy of the Unota people is also very short, and the ten-year-old Unota people are considered adults, and they have to bear the responsibility of going out to hunt.

The average life expectancy of the Unota tribe is about 28 years old. In other words, except for the young and women who can't fight, almost all the people in the mountain worm tribe are soldiers.

Even in the event of a genocide crisis, the strength of these relatively weak women and children cannot be ignored.

After the Unota tribe living in such a cruel environment discovered a world rich in supplies and low in strength, it is not surprising that they would invade with their entire clan.

Being next to such a powerful enemy really made Su Mu unable to relax.

What's more important is that among the mountain worm tribes, there are three who have reached the level. They are the strongest fighting force of the mountain worm tribe, and they are proficient in the technique of combined strikes.

Even Su Mu didn't dare to underestimate the combat power formed by the three elites who are proficient in combined attacks, not to mention that they are not alone, and they all lead powerful armies.

Fortunately, the space crack cannot be opened all the time, it is opened periodically, and it can only be opened again after a period of time after this opening.

And it can only last for a certain period of time after it is turned on. After this period of time, the space crack will disappear, waiting for the arrival of the next cycle.

At the same time, the space cracks are big and small, and the number of space cracks that can pass through is limited. Otherwise, Su Mu really has to carefully consider whether to sink the valley into the ground.

The Unota soldiers stationed in the secret realm already knew about the annihilation of the troops led by Gu Wan. For this hard-won outpost, they carried out suicide attacks from time to time to prevent Su Mu from discovering the secret realm. Causing this precious outpost to fall.

It is also thanks to their ignorance of Su Mu's intelligence, otherwise they would not have carried out such a suicide attack at all costs.

Su Mu also knew the location of the secret realm due to some reasons, but he couldn't capture this outpost.

It's not that he doesn't want to, it's that Xiaobai's overall strength is still much worse than that of the Unota soldiers stationed in the secret realm.