"It's around here, and everyone is looking for it separately."

Yang Yi gave an order, except for Lin Feng, everyone else scattered in groups of two to look for it.

Although it is not certain that the enemy is burrowing here, there is a very obvious heat source in the photograph taken by the Shadow, and according to Aaron's analysis, such a huge amount of heat is only emitted when the dragon is drilling. If you just create an ambient temperature suitable for the survival of the Silicon Phantom Warrior, an ordinary heat source is enough. Crucially, drilling the tunnel to the Earth's core requires melting the rock, which generates a lot of heat.

It wasn't long before Jackson made a discovery.

It is indeed a tunnel, diagonally downward, with a diameter of more than ten meters. If it is the masterpiece of the Earth Dragon, then this Earth Dragon must be amazingly large.

When Yang Yi and Lin Feng arrived, Jackson was analyzing rock samples with a portable instrument.

"How?"

"That's right, it's the Earth Dragon." Jackson handed the instrument to Yang Yi. "Genetic samples of Earth Dragons have been detected, along with more than a dozen other silicon-based lifeforms."

"Act as planned, be careful."

Jackson nodded, called Justin, and went to the front to clear the way.

By this time, the chaos in the canyon had been brought under control.

Dozens of generals were dispatched at the same time, and although they did not find the enemy who launched the attack, they stabilized the situation. Dozens of camps that were attacked were abandoned, and the living Silicon Warriors in these camps were relocated to nearby camps, while the dead Silicon Warriors were ignored. Several powerful generals joined forces to clear the rockfall blocking the middle of the canyon and connect the camps in the canyon.

After Yang Yi and the others entered the tunnel, Buck, who was in charge of the broken tunnel, got into it and installed a powerful Origin Mine at the mouth of the tunnel.

The attack was initiated by Yang Yi, but others added to it.

As scheduled. After finding the tunnel, Yang Yi and Lin Feng led the officers and soldiers of the special squadron, that is, Jackson and others, into the tunnel, found and killed the earth dragon, and prevented the enemy from advancing to the center of the earth. Shen Chengwen led the officers and men of the strategic squadron to follow Karl back to the Polaris base to deal with a possible attack by the enemy. According to Yang Yi's speculation. After an attack on a camp, the enemy may become angry. If the enemy's commander had been a little smarter, he would have thought that the garrison had been reinforced and would have launched a general attack in advance. Obviously, the garrison can't hold the Polaris base at all, and if the base is captured by the enemy, even if Yang Yi and them kill the Earth Dragon, it will be useless.

Although Shen Chengwen felt that Yang Yi's arrangement was not very safe, after all, no one knew what the enemy was doing underground, and the team that followed Yang Yi into the underground was not strong. At least in Shen Chengwen's opinion, it is not the strongest combination, but in the case of Yang Yi's insistence on this deployment and Lin Feng's support, Shen Chengwen is not easy to object, after all, Lin Feng is the captain, and Jackson is a real human warrior.

With Jackson here, even if you meet a few generals, it's not too much of a problem.

Of course. How to escape from the ground is not a problem at all.

Don't forget. In Yang Yi's team, the weakest ones are also fifth-level soldiers, and with their combat power, it is not difficult to forcibly open a passage to the ground. In addition, there are also the "Fire Phoenix" and the "Cold Ice and Snow Tiger", as long as these two fighters are used. Even if you make a hole in Prometheus, it's not too difficult, so don't worry about retreating.

It didn't take long for Buck to catch up with the big army.

After entering the tunnel, everyone did not keep it anymore, and all of them showed the strength of the soldiers. Several of the weaker ones also used the individual aircraft they brought.

In fact, the tunnel has an inclination of about 60 degrees, and it can fall down by gravity.

After a while, a muffled explosion was heard from the rear.

Yang Yi looked back at Buck and didn't say anything.

It was the Primal Mine that Buck had installed at the entrance to the tunnel that exploded, and it was so violent that it was so far away that it was not felt.

The Origin Mine is powerful enough to blow up the tunnel entrance.

Although it can't stop the strong man at the level of a general, it can create some trouble for the enemy, so that the enemy has some scruples and does not dare to catch up rashly.

How long this tunnel is, Yang Yi is not clear.

After about half an hour of travel, the tunnel suddenly turned and went straight down.

Seeing the mark left by Jackson, Yang Yi sped up. More than ten minutes later, Yang Yi and the others met Justin, who stayed to answer.

Ahead, there are more than a dozen passages.

Jackson had entered a passage and had not yet returned.

"Split up and search, and return as soon as they find out. If nothing is found, assemble here in half an hour. If you encounter an enemy, don't fight hard. We can't act rashly until we figure out the situation. Yang Yi didn't ramble and arranged tasks for others.

It's unclear how far the downside has gone, but Karl's concerns have been demonstrated.

The Silicon Charm army dispatched the Earth Dragons in an attempt to drill a tunnel to the center of the earth. There is no doubt that the enemy's aim is to completely control the star Prometheus. According to Karl, if the enemy reaches the center of the earth, he will be able to take out all the human soldiers on Prometheus by changing the gravitational field, and even completely change the environment of Prometheus. If it is not stopped, the human legion will lose this important planet forever.

As for what would happen next, Karl didn't say, and he didn't need to say it explicitly.

If the environment of Prometheus is not suitable for human soldiers to garrison, or even allow humans to survive, the only option in the first war zone is to completely destroy Prometheus, which is much better than letting it fall into the hands of the Silicon Charm Alliance and become a springboard for the Silicon Charm army to invade the South Alpha Galaxy.

If you really want to get to this point, everyone on the planet Prometheus will not end well.

To put it bluntly, as long as Marshal Sean makes the decision to destroy the Prometheus star, no one will care about the defenders here, and they will not send troops to the rescue.

30,000 soldiers, just a fraction.

In the Fifth Greenwich War, the Human Federation armed tens of billions of officers and soldiers, and in the early days of the war, when the war situation was extremely unfavorable to the Federation, it also took the initiative to give up many colonized planets and garrisons on these planets. For the sake of the final victory, no commander-in-chief will care about the life or death of a few soldiers. In fact, even Xiao Wentian gave up a lot of his subordinates in the attack and defense battle of Lighthouse Star.

Half an hour later, everyone rushed back.

It's just that Jackson still hasn't returned.

Yang Yi didn't delay much, and immediately led the team into the passage that Jackson was exploring.

This time, it was Justin who opened the way in front. Obviously, Jackson had found the right direction, and he was in trouble, otherwise he would have rushed back long ago.

After about half an hour of walking along this straight passage, the temperature began to rise.

This does not bode well.

Although the geological activity of Prometheus is very high, as early as a thousand years ago, the First War Zone tried to transform the planet. Since then, a geocentric tunnel has been opened up that runs through the north and south poles. Because it was originally planned to install an SSS-level primordial energy converter in the center of the earth, when the geocentric tunnel was opened, the engineering troops of the first theater cooled the earth's core, and the Prometheus star also lost its geomagnetic field.

To put it simply, the core of Prometheus has long since cooled, and it is only the liquid mantle that causes geological activity.

Yang Yi and they had been traveling for more than an hour, and at their speed, they had already passed through the mantle. It stands to reason that ambient temperatures should stabilize rather than rise sharply.

The only thing that can cause the ambient temperature to rise is probably a high-temperature object.

Silicon Beast!

A massive earth dragon!

You must know that the earth dragon is the largest of the common silicon beasts, and there is no upper limit to the weight of an adult earth dragon, as long as there is a suitable environment and nutrients to promote growth, the earth dragon can continue to grow. In the records of the Human Federation, there was once an Earth Dragon that was the size of an asteroid. In fact, this is not the biggest earth dragon. It is rumored that in the North Alpha Galaxy, some Earth Dragons that have survived for hundreds of thousands of years can grow to the size of a giant planet and rule a star system that is itself a vast ecosystem that is home to other silicon beasts. Of course, this kind of super earth dragon is also a threat to the intelligent civilization of the Silicon Charm Alliance, so it is extremely rare.

In addition, the Earth Dragon itself is a commonly used "weapon" of the Silicon Charm Alliance.

In the past few Greenwich Wars, the Silicon Alliance has often used dragons to control planets and environmentally modify the planets they have already occupied.

It's just that the domesticated and controllable earth dragons are not very big, at least not comparable to the rumored super earth dragons.

Justin was so anxious that he increased his speed to the limit in one go.

Yang Yi and Lin Feng dared to hesitate, and immediately accelerated to catch up. Fortunately, Justin was only a level 10 soldier, and the maximum speed he could reach was not much faster than Lin Feng, who was also a level 10 soldier. Yang Yi has the "Source of Life", and his ultimate flight speed is not below that of a tenth-level soldier.

It's just that others can't keep up.

After flying for more than ten minutes, a dazzling light shot from the front.

Seeing Justin in front of them, Yang Yi and Lin Feng immediately slowed down.

At this time, Yang Yi found that the ambient temperature had reached thousands of degrees Celsius, and even if there was an energy barrier protection, he could feel the scorching temperature.

Lin Feng nodded slightly at Yang Yi, telling Yang Yi not to worry. She had reached out to Buck and the others to stay behind.

In addition, the gravitational strength is very weak, indicating that it is already inside the center of the earth.

The glare comes from the exit of the tunnel.

If the information provided by Carl is correct, there is a hollowed-out center ahead. Obviously, the crimson glow was not a natural product.

The enemy has opened a tunnel and reached the center of the earth!

"Whew-"

Hearing the roar coming from ahead, Yang Yi took a deep breath.

Strictly speaking, it wasn't a roar, but the sound of the Earth Dragon, after devouring the rock, expelled the hot gases produced when it melted the rock.

The enemy has taken the center of the earth, can Prometheus still hold it? (To be continued......)