Ye Feng had used his mental power to explore the underground, but he had no gains. Moreover, before the corpse tide broke out, these zombie mice might have not started to take formal actions, so it is difficult to use his mental power to detect something.

But now according to Ye Feng's estimate, these zombie mice should have taken action. With his mental power breaking through to the fifth level and increasing the exploration range, he might be able to find some clues.

With the exploration of mental power, the scene below the ground clearly appeared in Ye Feng's mind.

Countless mice were digging tunnels together. At this time, there were already dense tunnels on the ground ten meters below the base. The huge and complex number was like drawing county-level roads on a national map, which made people dazzled.

Ye Feng was sure that if an ordinary person was put in, the other party might not be able to get out of such a complicated tunnel if he had been trapped for two or three days.

These zombies and mice are able to quickly transfer without long enough to attack anywhere in the base.

And if you look closely, you will find that although these tunnels look very complex at first glance, their distribution is extremely uniform. The attacks of these zombies and mice are evenly scattered everywhere. They are not crowded places, so the degree of attack will be increased, and the number of people will be reduced.

If anyone who knows military affairs here, just analyze it carefully and you can come to a conclusion that these zombies and mice are just harassing to the greatest extent, not really wanting to use sneak attacks to achieve any goal.

Simply put, these zombie mice, who created such a huge attack, may have been just a cover for the ultimate purpose.

However, after Ye Feng used his mental power to "see" all this, his expression was quite calm, because he had seen these situations a few days ago. If it weren't for this, how could he pay so much attention to these zombie mice? The commander behind these zombie mice was definitely very big.

However, as he explored, Ye Feng's face gradually became a little ugly. After his mental power broke through to the fifth level, he could easily detect any move within a radius of 500 meters, and the exploration was clearer.

However, even so, he still did not find anything. Except for the number of these zombies and rats and tunnels, it was almost no different from the harassment a few days ago.

Just as Ye Feng frowned and pondered, a strong vibration suddenly came from his mental exploration.

Feeling the vibration, Ye Feng's heart moved slightly, then controlled his mental power and explored the place where the vibration was in a straight line.

Ye Feng's mental power can be directly released to investigate, and he can detect all the situations within 500 meters of his center. This range is round, and Ye Feng is that round.

But if you forcefully control your mental power and only explore one direction, then the distance can be increased by more than double, that is, it will reach a range of one thousand meters.

So Ye Feng was able to find that at the coalition headquarters, a huge instrument had been started. A huge metal plate and several metal pillars extended from below it, clasping on the ground, and then began to vibrate at the same frequency.

As the instrument vibrates, underground passages within 30 meters of the center are beginning to collapse.

The underground passage was collapsing, and the instrument was moving slowly. Wherever it passed, the dense passages dug out by zombies and mice under the ground were constantly being smoothed out.

In addition, nine of the same instruments appeared in several other directions, acting together.

After using mental power to detect all this, Ye Feng knew that the seismometer on the coalition side should have been modified, and based on the current situation, the efficiency is still very high.

Just based on the current situation and a little inference can be made, it can be judged that if the ten instruments operate together, it only takes 20 minutes at most to walk around the base and collapse all the passages dug by these zombies and mice.

Although these zombies and mice will continue to dig tunnels, with these ten seismometers, their excavation speed will become turtle's speed, and the excavated passage will soon collapse again and cannot be reused.

Under such circumstances, their sneak attack efficiency will be greatly reduced, and it will not even pose any threat to the coalition forces.

It can be said that the plan to modify the seismometer to curb these zombies and mice is quite smooth in the current situation.

Seeing this situation, Ye Feng also chose to wait patiently. He also wanted to see what kind of way the commander behind the zombie mouse would take to deal with it. Perhaps he could use this response method to see what the other party's plan was.

While Ye Feng was waiting patiently, 20 minutes passed quickly. The ten seismometers, just like Ye Feng's judgment, had already walked around the base and collapsed the original passage.

Although the zombies and mice below were still digging the tunnels, ten seismometers on the ground were also constantly operating, and the passages that had just been dug were still collapsing everywhere.

Under such circumstances, the frequency of attacks by those zombies and mice is less than one-tenth of the previous ones.

If on average, each soldier would be attacked by zombies and mice every two or three minutes, which would be unable to rest. Then the time will now be extended to twenty or thirty minutes. If a few people are together and one person is separated to protect them, then they can take a short snatch.

The change in the situation on the field also made the soldiers in the base cheer excitedly.

And as time goes by, the sun rises higher and higher, and the sun becomes more and more fierce. The attack speed of those zombies and animals that are still attacking greatly slows down, and even bird zombies are dispersing.

It can be said that all this is moving in a good direction, and all the soldiers in the base smiled on their faces.

Such a tough battle made these soldiers feel a sense of belonging to the coalition forces, and knew that only when their bases united can humanity truly survive in this apocalypse.

The soldiers at the entire base were full of fighting spirit and smiles on their faces. It can be said that everything is developing towards the good.

But only Ye Feng, who was sitting in the tent, had no slowing down his face because of all this, and even his brows became even tighter.

Because he discovered that even though these zombie mice were curbed, the commander behind the scenes did not make any adjustments. It seemed that the success of these zombie mice attacked them was irrelevant.

In addition, Ye Feng also discovered that compared to when he just returned to the base, the danger he noticed from the ground was a little stronger than before.
Chapter completed!