(Good news: this book is signed!) ）

In the center of the picture is a circular building, with an antenna at the top pointing straight into the sky, which should represent the main base where Ye Bing is. Around the base, small green squares lit up.

Ye Bing looked at this picture with some surprise, thinking to himself that it would be difficult to choose a construction site here?

Sure enough, the next second the overlook appeared, Natasha gave a hint:

"Please click on the green square on the screen to determine where the beam tower will be built."

Ye Bing blinked in surprise, but finally clicked on a grid close to the main base.

As soon as he clicked, the screen immediately changed to a live interface, which was the real-time monitoring around the base.

However, in the upper left of the monitoring screen, there is an extra small square, in which an icon of a beam tower is drawn, a clock is drawn on the right side of the icon, and the right side of the clock shows "3 seconds".

Suddenly, a scene that made Ye Bing stunned appeared!

I saw that at the moment when the real-time monitoring screen was switched, a pure white pillar of light suddenly rose from the ground, rising to a height of two meters, and then spun rapidly like a tornado!

The pure white pillar of light rotated extremely fast, but it only existed for three seconds, and when the "3 seconds" displayed on the clock in the upper left corner of the screen changed to "0 seconds", the white pillar of light immediately dissipated like a wind, leaving a two-meter-high cylindrical tower in place!

At the same time, there was a "ding" sound inside the entire base, and then the projection text appeared in front of Ye Bing's eyes again:

"Beam Tower LV1 has been built!"

"The main base has gained 1 point, and the cumulative point is 1 point."

Ye Bing stared blankly at everything in front of him, and after ten seconds, he sat on the chair and shouted:

"I'll go, this technology is too perverted!"

Although he is just an ordinary college student, Ye Bing also knows what the level of human science and technology is. For example, this kind of technology in front of us, which can make a two-meter-tall building rise from the ground in just three seconds, I am afraid that even if it is a peaceful and prosperous era, human beings will not have a chance to achieve it in a hundred years!

After the beam tower is built, its properties automatically appear on the big screen:

Name: Beam Tower

Building Class: LV1

Health: 170

Damage per second: 10

Rate of fire: Medium

Energy required to reach the next level: 4 Energy cost

Upgrade time: 5 minutes

Ye Bing's gaze swept over the screen, then he suddenly stood up and said, "Natasha, turn on the base shell and make it fully transparent." ”

Airplanes......

As the liquid metal slipped, the entire base became completely transparent again.

Ye Bing walked to the side close to the beam tower, his eyes widening to observe the magical technology that was almost close at hand. The shape of the beam tower is very similar to the light prism tower in a game called "Red Alert" that Ye Bing once played, with a cylindrical base and several huge prisms on top. According to Ye Bing's guess, its attack method should be to shoot lasers, but it is not clear how powerful it can be.

Ye Bing was silent for a moment and asked, "Natasha, in your estimation, how many zombies can a LV1-level beam tower deal with at the same time?" ”

"Twenty-two." Natasha gave the answer almost instantly.

Ye Bing didn't know how she calculated it, but the smart brain is the smart brain, and the data obtained is definitely not empty and unfounded, but calculated, so Ye Bing has no reason to doubt it.

He nodded, and then asked, "However, once the beam tower is built, there is no energy in the base to build other buildings." Is there any way to replenish the base other than directly providing the magic mirror? ”

"There are two ways." Natasha replied as she controlled the large screen to switch to the top of the main base's enclosure, where stood a blue crystal plate about four square meters in size.

Natasha explains: "The first method is solar charging. The solar panel technology at Doomsday Main Base is able to absorb and utilize new sunlight to the maximum extent possible, supported by current technology. At this rate, the main base will increase its energy by 1 per day. Also, as the level of the main base increases, the rate at which new sunlight is absorbed will also increase. ”

"The second method is to recharge by recovering the mass energy in the living organism. To do this, you first need to have a 'Matter Recovery Tower', and then every unit you put into it will give you a certain amount of energy gain. ”

After Natasha finished speaking, an icon of a tower-shaped building immediately appeared on the screen, with an introduction to the basic attributes attached:

Name: Substance Recovery Tower

Building Class: LV1

Health: 110

Energy recovery efficiency: 40%

Energy required to build: 3 energy cost

Ye Bing took a closer look, and the icon color of this building was green, proving that it could be built at the current level of the main base. However, due to the lack of energy, it will take some time.

Ye Bing touched his head and asked, "Natasha, then according to your estimate, how much energy can the corpse of a primary-grade zombie bring me?" ”

Natasha's voice was dulled, and she replied, "Strictly speaking, I can't give an exact answer until you get the biological specimen." However, according to the empirical radiation formula inside the system, the energy recovery value of the unit will not be higher than 0.05."

Ye Bing was taken aback: "I'll go, doesn't that mean that it takes 20 zombie corpses to recover one unit of energy?" It's too inefficient. ”

"As the energy intensity of the living form and the level of the material recovery tower increase, the amount of energy recovered per unit of living organism will also vary." Natasha replied decently.

Ye Bing nodded thoughtfully, sat on the sofa, and muttered, "In this case, I have to think about how to get so many zombie corpses." ”

As soon as he finished speaking, Natasha's voice came to his ears:

"Your problem is not difficult to solve. Do you need me to provide you with a reference plan now? ”

"Of course!" Ye Bing immediately shouted, he slapped his thigh, and said in his heart that he had forgotten it, obviously there was such a powerful brain in the base, why not use his stinky head that was not bright?

Natasha replied, "At the moment, the base's defenses are relatively simple, and zombies must be drawn to the range of the beam tower in order to be able to annihilate them. So, the first step we need to do is to lure the zombies. To do this, I can offer you two options. ”

"First of all, you can choose to temporarily remove the electromagnetic shield around the base, and then the zombies in the vicinity will quickly rush towards the base."