Xiao Kong called out sweetly, needless to say, she would definitely take Fei Ya to swim in the swimming pool.
In the evening, the channel was still warmed up as usual, and Luo Yu and his team cleared the level without encountering any resistance.
In the room where the golden eggs were smashed, Fang Yumeng chuckled and said: "Well, you have the best luck, you're the one to do it."
Luo Yu did his part, and in everyone's expectant eyes, he smashed the hammer down.
"boom!"
The golden egg cracked open and a scroll appeared.
[Team Shared Technology Scroll: Thermal Air Defense Technology]
"Huh!"
Fang Yumeng said in surprise: "This is the technology of air defense towers!"
Alina looked at the scroll, then at Luo Yu, and sighed: "You two humans... are very lucky."
Everyone's eyes showed joy, and Luo Yu was overjoyed!
He had wanted to build an air defense tower for a long time, but there was no scroll. Unexpectedly, this time the golden egg actually produced a scroll!
Luo Yu said with a smile: "We are not selling this scroll, I will use it now."
"Um!"
No one had any objections. Although the auction was about to begin, this kind of precious shared technology definitely cannot be sold.
After clicking Use, everyone received a prompt to unlock the technology.
After everyone went back to their respective homes, Luo Yu soaked in the bathtub, gently pinched Xiao Jin's tiger tail next to him, and said with a smile: "Go get me a glass of juice."
"oh!"
Xiao Jin was about to get up when he suddenly remembered something and said, "Master, are you ready to drink the wine you are brewing?"
"I want to taste it."
Luo Yu said with a smile: "If you didn't tell me, I would have almost forgotten. I would have taken out the wine tomorrow."
"Go ahead and get me some juice."
Xiao Jin nodded with a smile, while Luo Yu was studying the newly unlocked technology.
This thermal air defense technology tree has many buildings. The cheaper ones include the thermal javelin launch tower, the thermal anti-air arrow launch tower, and the advanced ones include the thermal beam anti-air bombardment cannon, etc.
The functions of javelins and arrows are similar to those of arrow towers, so there is no need for them.
The light beam bombardment cannon is too expensive, even more expensive than the electric shock tower.
After Luo Yu studied for a while, he finally decided to build a [Thermal Condensed Bomb Anti-Air Defense Tower]
This kind of thermal energy air defense tower does not need to consume wood as raw materials, but uses thermal energy to condense into fist-sized thermal energy bombs to bombard the sky.
The attack power is 10 points, which means it can instantly kill creatures with a constitution below 10 points. It is not very powerful, but has a good rate of fire.
It launches once every second and has an air range of 2 kilometers.
The range of 2 kilometers basically exceeds the limit of the airship's ascent. The most important thing is that the cost is cheap.
[Thermal Condensation Bomb Anti-Air Defense Tower: Fireproof Stone Bricks*500, Iron Ore*500, Copper Ore*500, Silver*5000]
Not to mention the electric shock tower, this cost is very cheap even compared to the arrow tower.
Of course, being cheap naturally has many disadvantages, such as consuming 10 thermal energy per launch, which consumes a lot of energy.
It can only be used against the air, not the ground.
In addition, this is a building, not a piece of furniture, and cannot be critically hit.
If Luo Yu hadn't obtained 10 thermal energy collection panels before, he might not be willing to build this thing.
"Let's make it again tomorrow!"
Luo Yu thought this in his mind, took a bath and went to bed.
After having 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 territory area has expanded a lot. The original strike array can no longer cling to the air wall, so it needs to be built again.
This is simple, reduce the original entrance space, build a death corridor, and then surround the new entrance with two walls and that's it.
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 new death corridor.
Currently, the territory has 17w of wood and 32w of stone bricks. The construction is complete!
After a few operations, the strike array was perfect again, and because of the addition of a corridor and two arrow towers, the defense would only be stronger than before!
Luo Yu clicked on the construction page and started building the condensed bomb air defense tower.
Unlike the enemies coming from the sky who only have one intersection on land, the entire east wall of air is almost within their attack range.
The defense in the east is about 7.5 kilometers in width, and the coverage radius of an air defense tower is 2 kilometers. In other words, two air defense towers can basically cover the airspace in the east.
The firepower of just two towers was definitely not enough, so Luo Yu decided to arrange the air defense towers using architecture and ladder configuration to block the attack in sections.
A row of four air defense towers were arranged at the extreme range of 2 kilometers away from the east air wall to ensure that once the opponent's air force entered the airspace, it would immediately be hit by fire.
If the opponent wants to destroy its own air defense tower, it needs to advance into the range of the arrow.
It's like being beaten all the way in vain.
This is much better than building directly next to the air wall.
The second echelon of air defense towers can be built directly on the base wall. The base wall is about 3 kilometers away from the first echelon of air defense towers. Once the opponent's air force approaches the base, the air defense towers on the base wall will be the same as the first echelon of air defense towers.
It can form a crossfire and cause continuous strikes on the enemy's air force.
This is the architectural air defense echelon conceived by Luo Yu.
In other words, building eight air defense 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 to build the first echelon of air defense towers in the wild. If the opponent breaks through the strike array, they will be attracted by the air defense towers during the impact and then be demolished.
This can slow down some enemy charges.
In the case of five electric shock towers firing a salvo every five seconds, as long as they can hinder the opponent for half a minute, they can kill dozens of the opponent's attacking units.
Just do what he thought of, and Luo Yu began to build an air defense tower according to his own ideas.
On the grassland, light flashed before his eyes, and an air defense tower appeared in front of Luo Yu.
This air defense tower is only one meter high, made of stone, and looks like a small stone radar. The bowl-shaped center store is where the thermal energy condensation bombs are launched.
After spending some time, Luo Yu built all eight air defense towers. The next step was to connect the energy pipes.
The copper mine is enough for now, once it is built, it will be done.
However, for eight anti-aircraft towers, a salvo consumes 80 heat energy. One shot per second, which consumes 4800 heat energy per minute.
In other words, even a fully-stocked thermal energy storage tank can only last about 10 minutes.
In addition, the release of the arrow tower also requires thermal energy. One thermal energy storage tank is definitely not enough, and another one needs to be built.
Not only the thermal energy storage tank, but also the best thunder energy storage station should be built.