"Go!"

Lin Yu threw his right hand upwards and fused the Ground Drill Bug Grade Card into the Immortal Land.

"Summon!"

Then the thought moved, and a large number of soul crystals in the storage space turned into a streamer, flew into the air, and began to summon the ground drill worm.

Thundered!

When these soul crystals flew into the air, the golden clouds tumbled with them, and 50,000 golden rays shot out from the depths of the clouds and fell to the ground, forming golden light masses.

When the golden light dispersed, 50,000 three-meter-long ground drill insects appeared around Lin Yu and the Colossus Mother Emperor.

After glancing at the surrounding drill insects, Lin Yu's eyes flashed a little doubt.

The color of these drill insects is different from the class card, which has never been the case.

The drill worms on the class card are earthy yellow bugs, with thick and strong shells and sharp barbs, just like a special armor "180" armor.

It doesn't have the soft and disgusting feeling of bugs, but because of the solid shell covered with barbs, it looks a different kind of coolness.

But the drill insects summoned now turned out to be white and soft insects, and they couldn't see the mighty shell at all, and they looked a little disgusting!

"This is also too ugly, let's change it..."

Seeing the summoned ground drill worm, Lin Yu suddenly had the idea of changing the ground drilling class.

This is simply a large worm, it looks so disgusting and affects the appearance of the city, which will frighten children!

I don't know if I learned Lin Yu's thoughts, or I couldn't help but be tempted by the soil.

These drill insects aim their heads at the ground, and the sharp teeth on their mouths open and close up and down, eating all the soil they touch.

After eating the soil, their bodies begin to secrete an earthy yellow liquid, which solidifies quickly.

Gradually, their white and soft bodies were completely covered by this liquid, forming an earthy yellow solid shell.

When this earthy yellow shell wrapped the soft white body of the drill worm, it no longer looked so disgusting.

"So it is!"

Seeing this, Lin Yu also knew why the ground drill worm looked so disgusting at the beginning.

It turns out that the mighty shell can only grow by using soil and obtaining soil elements.

As long as you eat enough soil, the shell will become thicker and stronger, and eventually become the one drawn on the class card.

And with this shell, the speed of the ground drill worm devouring the soil has also become significantly faster.

In the blink of an eye, the figure of the drill insect was no longer visible on the ground, leaving 50,000 round holes with a diameter of half a meter on the ground.

On the side walls of these round holes, there is a layer of earthy yellow crystals, which is the product of the liquid secreted by the drill worm after eating the soil and sticking to the side wall of the round hole.

Walking to the edge of one of the round holes, Lin Yu stretched out his finger and gently pressed on the earthy yellow crystal on the side wall.

He found that the originally soft and warm soil, with this layer of crystals, became extremely strong.

As long as this layer of crystals is thick enough, there is no need to worry about the collapse of the soil layer because the underground cave is dug too large.

This saves a lot of effort.

Originally, Lin Yu was still worried about the collapse of the cave, and was ready to arrange for skeleton soldiers to come down with steel and concrete after the drill worms dug part of it.

Tiny holes are dug into the side walls of the cave, and steel bars are inserted into them, which are reinforced by pouring concrete.

Now with the crystals secreted by the drill worms, there is no need to bother so much, just let them rub a little more and it will be over!

"Today is a constant surprise!"

With two gentle tapped fingers on the crystal, Lin Yu stood up with a smile.

After pondering for a while, he took out a pen and paper and began to sketch the underground lair factory.

With this crystal, there is no need to worry about the collapse of the nest, you can dig it however you want.

The planning of underground factories is much simpler, and there is no need to consider the problem of force.

Otherwise, you also need to ask the architect to calculate the force on the structure, otherwise digging and digging, the ground collapses, which is hilarious.

But now there is no need to worry about this, just let the drill worm rub a few more layers of the side wall of the cave and make a few more layers of crystals.

This is a natural underground engineer!

After a while, Lin Yu drew out the general plan and handed the drawing to the Colossus Mother Queen.

"I made a sketch, let's see if you can understand it."

"Hmm... No problem, I understand how to do it! "

After receiving the drawings, the Colossus Mother Empress did not have much effort to see it. (Read violent novels, just go to Feilu Fiction Network!) )

The content on the drawings is simple and intuitive.........

A simple line is used to draw circles representing the underground caves to be built, and a size of 120 is marked on it, indicating that the diameter of these caves is 120 meters.

The circles are connected by two lines to represent the passage connecting the caves, and the number 20 is also marked on them, indicating that the distance between the caves is 20 meters.

Considering the problem of construction errors and the convenience of construction, Lin Yu finally determined the size to 120 meters in diameter and 20 meters apart.

A cave with a diameter of 120 meters and a cross-sectional area of 11,304 square meters ensures that a cave can accommodate a nest.

This design has no technical content, it is a neatly arranged underground cave, and it is not difficult to implement and build, as long as you can understand the meaning expressed by Lin Yu, you know how to do it.

Since the Colossus Mother Emperor has already understood, then Lin Yu can be a handshaker with peace of mind.

As soon as his mind moved, he gave the Colossus Mother Empress the command of 50,000 ground drill insects.

"Next, you will start building the underground lair factory five hundred meters down from the current location."

"Every time the ground drill worm builds a cave, you start to build a nest in the cave, if there is anything you need, don't hesitate to build twenty or thirty thousand nests as soon as possible!"

"Okay big guy, this matter will be handed over to the little elephant, the underground is my home field, I will definitely get things done!"

After hearing Lin Yu's appointment, the Colossus Mother Empress 0.4 responded excitedly.

He really liked this task, and he could do things for the big guy again, and he could go back underground, and there was nothing better than this.

He is an underground creature, and although it is not uncomfortable to stay on the ground, it always feels strange.

But without Lin Yu's orders, he didn't dare to dig a hole casually and hide deep underground.

Now that he has this task, he can return to the underground with peace of mind.

Tick bells!

Lin Yu was about to explain some more details, but the contact crystal in his pocket suddenly rang, and he took it out to see that it was not Xu Lingwei who called, but Natasha.

He was puzzled and connected the phone.

As soon as the phone was connected, Natasha's anxious, panicked voice came:

"Master, it's not good, Xiao Yao has an accident, I can't wake up no matter how I scream!"

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