While waiting for the mechanical barracks to be upgraded, the second wave of cleanup of the recovery vans has also ended.

This time, there were three more points of recovered corpse energy and twenty-two inferior magic crystals in the base.

With this energy, Ye Bing directly opened the construction interface, clicked on the Zombie Research Institute, and chose to build!

It took two hours to build a zombie study, and before that, Ye Bing could only wait.

He looked and saw that in addition to the cost of building the Zombie Research Institute, there were still twenty inferior magic crystals left in the base.

With the rest of the magic crystals, you can build another building.

He jumps back to the building interface.

Today, the remaining three Legendary Faction-specific buildings and required magic crystals are:

Heavenly Desire Court - Thirty inferior magic crystals.

Heaven Purifier - Fifteen Magic Crystals.

Greenhouse Cultivation Garden - Ten Magic Crystals.

In fact, the buildings that are unique to the Legends faction of Mankind are not expensive to build.

As long as you cooperate with the base defense structure and the mechanized corps, you can gather all these magic crystals in less than two days.

However, despite this, Ye Bing couldn't build them all at once.

Because the control limit is insufficient.

Compared to the normal unit control limit occupied by each normal building, each building in the Human Legends faction occupies a full five unit control limit!

You must know that the upper limit of the control limit of the main base is only fifty units, and if all the unique buildings of the human legendary camp are built, the limit will be directly accounted for half.

Coupled with the buildings that the base originally owned, there was no need to expand the mech corps.

According to Ye Bing's idea, at least at this stage, it is the limit to build one more unique building.

In the case of choosing one of the three, Ye Bing almost didn't hesitate, and hit the idea to Tianxiangting.

From the profile of Tianxiangting, including Natasha's attitude. He vaguely felt that this guy might be the core of the route of human legend.

However, there is no need to rush to build the Heavenly Desire Court.

After all, the Zombie Research Institute hasn't figured it out yet, and if you have to make another Heavenly Fantasy Court all of a sudden, it is inevitable that you will be greedy and chew more.

So, things still have to come step by step.

An hour later, the mechanical barracks was finally upgraded!

When the prompt for the completion of training sounded, Ye Bing was doing freehand strength training at the main base, and immediately jumped up as soon as he heard the sound.

He rushed to the main console and jumped to the mechanical barracks.

"Huh. It is worthy of LV2 architecture, and it is a lot of grandeur! ”

After upgrading to LV2, the area of the mechanical barracks has been expanded by 1.5 times, and the height has also increased from the original two-story building to three floors, and the appearance is still full of futuristic sci-fi atmosphere.

Among them, another big change is that the gate of the mechanical barracks has become wider and taller.

Previously, every new class had to come out of this gate after it was produced.

And one more thing. In addition to the exit gate, there is also a small door on the side of the mechanical barracks, which it did not have before, and it is not known what the purpose is.

He clicked into the mechanical barracks interface and took a look. There is also one more discovery function.

In addition to the original production interface, there is also a "retrofit" interface.

Click in and take a look, the interface is empty, there is nothing.

Ye Bing temporarily suppressed this doubt in his heart. Move on to the production interface.

At this glance, he really saw what he expected.

"Hehe, sure enough. Martial Soldier LV2. Sparrot LV2, Engineer LV2, Recon Robot LV2...... Each of the original classes has a Premium version, and the lower classes have been replaced and cannot be built. ”

After upgrading the mechanical barracks, he could only create high-level troops, but could not create low-level troops, which was the reason why Ye Bing was reluctant to upgrade the mechanical barracks before.

Some people may find this idea unreasonable.

With a high-level class, who wants to use a low-level class?

There is both truth and no reason in this statement. Because this is not simply a question of the comparison of the strength and weakness of the troops, but also the comprehensive production price and consumption.

Ye Bing clicked on a LV2-level martial soldier at random, and his image and various data immediately came into view.

He searched directly to the bottom, and sure enough, he saw such a line of words:

"Energy required for production: 10 energy cost."

Look, the cost of LV2 and LV1 production is so amazing.

The low-tier class only needs three energy, while the high-tier class is more than three times more expensive.

This is still on the premise of only considering production costs.

If you consider the magic crystals consumed in battle, it is estimated that this number is even more exaggerated.

Such a high price is by no means something that Ye Bing could afford before. Moreover, in the face of a large number of primary zombies, the role played by the second-level martial arts soldiers may not be much greater than that of the first-level martial arts soldiers, and the cost-effective improvement is not obvious, so Ye Bing did not choose to upgrade the mechanical barracks before.

He continued to look down, and his eyes soon lit up!

Because, he finally saw the new class of troops he dreamed of!

They are three types: miniature reconnaissance aircraft, hovering light boats, and Guangling combat vehicles.

Ye Bing clicked in one by one, and soon understood the role of each class.

The properties are as follows:

Class: Miniature Reconnaissance Aircraft

Grade: LV1

Health: 15

Volume: Very small

Maximum speed: 150 km / h

Maximum load: twenty kg

Colonization Technology: None

Occupation limit: 1 unit

Cost of production: 5 energy cost

Production time: 5 minutes

Vehicle: Hoverboat

Grade: LV1

Health: 50

Armor: 5

Volume: Small

Maximum speed: 120 km/h (usual)

210 km/h (nitrogen injection)

Maximum load: 500 kg

Number of seats: 4

Colonization Technology: None

Occupancy Limit: None

Cost of production: 5 energy cost

Production time: 10 minutes

Note: This vehicle can be operated by an unlocked Engineer who has unlocked the LV1 mastery and requires a driver.

Vehicle: Guangling Chariot

Grade: LV1

Health: 300

Armor: 20

Loading weapons: Two thermal laser guns

One Guangling transmitter

Volume: Medium

Maximum speed: 150 km / h

Maximum load: 3.5 tons

Colonization Technology: None

Occupation limit: 3 units

Cost of production: 30 energy cost

Production time: 40 minutes

Note: This vehicle can be operated by an Engineered with unlocked Piloting Mastery LV1 and requires a minimum of two and a maximum of four pilots.

After reading the above three detailed explanations, Ye Bingfang realized a mistake he had made before.

That is, the new class can no longer be called a "class", but should be a combination of "class" and "vehicle"!

If the miniature reconnaissance aircraft can be regarded as pure intelligent robots, then the latter two types of hovering light boats and Guangling combat vehicles are complete vehicles. (To be continued.) )