Shock!The beginning is a land, and the crit strikes a miracle

"boom!"

The golden egg cracked open and a scroll emerged.

[Squad Shared Technology Scroll: Thermal Air Defense Technology]

"what!"

Fang Yumeng said pleasantly: "This is the technology of the air defense tower!"

Elena looked at the scroll, then looked at Luo Yu, and sighed: "You two human races... are very lucky."

Everyone's eyes showed joy, and Luo Yu was overjoyed!

He had wanted to build an anti-aircraft tower for a long time, but there was no scroll, and he didn't expect that the golden egg would produce a scroll this time!

Luo Yu said with a smile: "We don't sell this scroll, so I will use it right away."

"Ok!"

Everyone has no opinion. Although the auction will be held soon, this kind of precious shared technology must not be sold.

Click to use, and everyone received a prompt to unlock the technology.

Returning to each house, Luo Yu soaked in the bathtub, gently pinched Xiao Jin's tiger tail, and said with a smile: "Go and get me a glass of juice."

"Oh!"

Xiao Jin was about to stand up when he suddenly remembered something and asked, "Master, are the wines you're brewing ready to drink?"

"I want to taste it."

Luo Yu laughed and said, "I almost forgot if you didn't tell me, I'll take out the wine tomorrow."

"Go, get me some juice."

Xiao Jin nodded with a smile, while Luo Yu studied the technology that had just been unlocked.

There are many buildings in this thermal air defense technology tree. The cheaper ones include thermal energy javelin launch towers, thermal energy anti-air arrow launch towers, and the advanced ones are thermal energy beam beam anti-air bombardment guns and so on.

The functions of javelins and arrows are similar to those of arrow towers, so they are unnecessary.

The beam bombardment cannon is too expensive, even more expensive than the shock tower.

After Luo Yu researched for a while, he finally decided to build a [thermal energy condensation bomb anti-air defense tower]

This kind of thermal energy anti-aircraft tower does not need to consume wood as a raw material, but uses thermal energy to condense into fist-sized thermal energy bombs to bombard the sky.

The attack power is 10 points, that is, it can instantly kill creatures with a physique below 10 points. The power is not great, but the rate of fire is good.

Launched once every second, the air-to-air range is 1 kilometers.

The range of 2 kilometers basically exceeds the limit of the airship's ascent, and the most important thing is that the cost is cheap.

[Heat-energy condensed projectile anti-air defense tower: fire-resistant stone bricks*500, iron ore*500, copper ore*500, silver*5000]

This cost is not to mention comparing with the electric shock tower, even compared with the arrow tower, it is very cheap.

Of course, cheapness naturally has many disadvantages, such as the consumption of 10 thermal energy for each launch, which consumes a lot of energy.

Only to the air, not to the ground.

Also, this is a building, not a piece of furniture, and cannot crit.

If Luo Yu hadn't got 10 thermal energy collecting plates before, he might not be willing to build this thing.

"Create it tomorrow!"

Luo Yu thought in this way, took a bath and went to sleep.

After breakfast in the morning, Luo Yu walked to the east of the territory. The first thing he built was not an air defense tower, but a strike formation.

After several reinforcements, the territorial area has expanded a lot. The original strike array can no longer stick to the air wall, so it needs to be rebuilt.

This is simple, the original entrance space is reduced, and then a death corridor is built, and then two walls surround the new entrance and the work is done.

Luo Yu is already familiar with this job.

Of course, this is not enough. Arrow towers need to be added on both sides of the newly added corridor of death.

At present, there are 17W wood and 32W stone bricks in the territory, and the work is done!

After a short operation, the strike array was perfect again, and because of the addition of a corridor and two arrow towers, the defense power will only be stronger than before!

Luo Yu clicked on the construction page and started building the cohesive bomb anti-aircraft tower.

The enemies coming from the sky don't seem to have only one intersection on the land, and the entire eastern air wall is almost within their attack range.

The horizontal defense in the east is about 7.5 kilometers, and the coverage radius of one air defense tower is 2 kilometers. That is to say, two air defense towers can basically cover the airspace in the east.

The firepower of two towers alone is definitely not enough, Luo Yu decided to arrange the air defense towers in the way of architecture, ladder configuration and segmental blocking.

A row of four air defense towers is arranged at the extreme range of 2 kilometers from the east air wall to ensure that once the opponent's air force enters the airspace, it will be hit by fire immediately.

And if the opponent wants to destroy his own air defense tower, he needs to advance to the range of the arrow.

It's like being beaten all the way for nothing.

This is much better than building directly next to an air wall.

The air defense towers of the second echelon can be built directly on the fence of the base. The fence of the base is about 3 kilometers away from the air defense towers of the first echelon. It will be able to form a crossfire and cause continuous blows to the enemy air force.

This is the architectural air defense echelon conceived by Luo Yu.

In other words, building eight anti-aircraft towers at this stage, plus electric shock towers and so many arrow towers, should be able to defeat the enemy's air force.

Moreover, it is also beneficial for the first echelon's anti-aircraft towers to be built in the wild. In case the opponent breaks through the strike formation, they will be attracted by the anti-aircraft towers during the impact and then demolished.

This can slow down the charge of some enemies.

In the case of five electric shock towers shooting a salvo in 5 seconds, as long as they can hinder the opponent for half a minute, dozens of attacking units of the opponent can be killed.

As soon as he thought of it, Luo Yu began to build an air defense tower according to his own vision.

On the grassland, a light flashed in front of his eyes, and an air defense tower appeared in front of Luo Yu.

This anti-aircraft tower is only one meter high, made of stone, and looks like a small stone radar. The bowl-shaped central store is where the thermal energy condensation bomb is fired.

It took a while, Luo Yu built all eight air defense towers, and the next step is to connect the energy pipelines.