After more than an hour, the Zerg army that had withdrawn from the Miners' City finally arrived, and they did not hesitate to pounce on one of the three human armies distributed in a zigzag pattern, one on the southwest side.

The other two human mecha legions also pounced on the Zerg army from the flank and rear without hesitation, and the fierce battle unfolded in an instant.

The Aerospace Tanks of the three Mecha Corps rose into the air at the same time, and above the heads of the Mecha Corps, they attacked the Zerg rushing up from the ground from the air to provide fire support to the ground troops.

The Stealth Mosquito in the Zerg army also launched an attack on the Sky Tank.

After the modification of the equipped airborne heavy high-speed electromagnetic machine gun, the air tank is no longer defenseless in the face of stealth mosquitoes, and the high-speed machine gun with an extremely high rate of fire, coupled with the fire support of the mecha warriors below, makes the stealth mosquito often have to pay ten times the price to shoot down an air tank.

Finally, the three-headed plasma worm hiding in the swarm couldn't help but take action, and dozens of plasma bombs pierced the sky, turning dozens of sky tanks into fireworks.

Although the Plasma Worm's shot knocked out dozens of Aerospace Tanks at one time, it also exposed the location of the Plasma Worm.

Bai Qi, who was lurking underground, soon received the location of the plasma worm from the military, and the positioning system in his hand showed the relative position of the plasma worm and their location.

Bai Qi immediately led the space warriors to pounce on the plasma worm closest to them.

Before the Zerg arrived on the battlefield, the human military had already surveyed all the cave terrain under this area, made a miniature 3D map, and entered it into the terminal of each space warrior's positioning system.

After receiving information about the location of the plasma worm. The positioning system terminal in Bai Qi's hand quickly gave a road map to reach the location of the plasma worm.

According to the route given by the positioning system, Bai Qi and others shuttled nearly a kilometer through the cave. Finally came to the bottom of the plasma worm.

Bai Qi asked everyone to stop and let Adrian hide to check first.

Soon. Adrian shared the above information via the communicator.

Adrian was lurking in a narrow cave at this time, five or six meters in front of the cave was a huge cave with a radius of more than ten meters, looking at the traces on the wall of the cave, it was obvious whether it was naturally formed, and it had just been excavated.

In the cave, hundreds of large beetles one meter long are gnawing and digging in the cave.

These beetles are also a type of Zerg, but they are not combat troops, but are similar to the identity of worker ants in an ant colony, and are called worker insects by humans.

At present, humans only know that this worker insect is mainly responsible for digging wormholes and collecting food for the mother.

Since suffering losses in the air-space warplanes of mankind. The three-headed plasma worms learned to behave, and once the three reserve plasma bombs were fired, they would burrow into underground caverns to avoid the subsequent bombardment of the fighters.

But plasma worms don't dig holes, so this kind of worker insects that specialize in burrowing have become the companion species of plasma worms, and in the Zerg army, as long as you see plasma worms, you will definitely be able to see worker worms.

Worker insects are specifically designed to dig caves, and their heads are capable of emitting a very intense tunable frequency infrasound wave. They can quickly determine the frequency of a rock, and then shake their heads at the same frequency as the rock, which can achieve the purpose of shaking the rock, and their predecessors have four blades and feet tens of centimeters long. Able to pull scattered rocks off rock mass.

Workers dig burrows very fast, and hundreds of workers work together to dig holes tens of meters deep in the mountains in a matter of minutes.

On the opposite side of the large cavern there was a wide passage that sloped upwards. Due to angle issues, only a small channel is visible in the video. But judging by the apparently brighter light in the passage than elsewhere, that passage should lead to the ground.

As this large cave was excavated in this rock formation with countless small caves. So on the walls of the big caves, there are countless small caves.

Bai Qi also used a complex topographic mapper to map out the detailed terrain of a nearby underground, selected six roads leading to small caves on the four walls of the big cave, and divided his men into six squads to dive upwards respectively.

Six squads lurked fifty or sixty meters away from the big cave, waiting quietly, and a few minutes later, Adrian, who was lurking next to the big cave, sent a message that the three plasma worms had come down.

The six teams moved in unison and rushed to the front of the large cavern as fast as they could.

The heavily armored melee professionals who rushed to the front of each team inserted their shields into the ground at a distance of seven or eight meters from the big cave, half-knelt on the ground, and formed a defensive formation, and the ranged professionals in the rear did not hesitate to launch an attack on the behemoth in the huge cave in front of them.

The huge three-headed plasma worm shrank in the cave with a diameter of no more than ten meters, looking a little cramped, and from the small caves around, most of them could only see a part of the body of this behemoth.

Arrows with the light of spells, spears with the sound of the wind, and spells that shone with brilliance and smoothness, rained down on the huge bodies of the three plasma worms.

Having lost their ability to spew plasma, the plasma worms had no other means of attack, and they trembled and crawled towards the ground.

The strength of the carapace of the plasma worm is comparable to that of the tank worm, and it can't stop the bombardment of the second-level spell at all, although the huge body gives him a strong vitality, but it can't resist the attacks of dozens of third-level professionals, and it only climbed a dozen meters before it was beaten by the space soldiers who swarmed up and fell to the ground.

When the plasma worm was attacked, it alarmed the Zerg above, and countless tank bugs and knife bugs swarmed into the cave, and the space soldiers had to turn around and run away without even bothering to pick up the light black cards burst out by the plasma bug.

According to the plan, the third-level mage in the team used a few spider web techniques to temporarily seal the passage, and then dived headlong into several passages below the cave and quickly left.

The escape route has long been promising, and the passages they have chosen have particularly narrow bottlenecks, which the Zerg cannot pass through, but humans can crawl through.

As planned, the group soon met in the depths of the cavern, and then touched another place where the plasma worm was shrunk......

On the ground, in order to create an opportunity for the space soldiers underground, the human army on the ground has also launched a desperate offensive.

Thousands of air tanks all rose into the air, desperately pouring fire on the Zerg army, attracting the fire of plasma bugs.

The Aerospace Fighter also risked being shot down and launched an attack on the Zerg army.

An overhead fighter plane was shot down, but there were also plasma worms that were forced to hide underground by the bombing of the fighter plane, and were bombed down by the fighter plane and buried in the ground.

This creates countless opportunities for the space soldiers underground. (To be continued......)