Under Li Tianran's firm command, the researchers had no choice but to follow his instructions and start manufacturing the Gonggong warship. The number of personnel sent to search the sea area of ​​Base 550 also doubled. At this time, the focus on Kuangxi Island completely shifted to two points: training the combat effectiveness of the pioneers and collecting materials for the manufacture of the Gonggong warship.

…

Sea area of ​​Base 550.

Several mecha warriors and tens of thousands of evolved soldiers were submerged at the bottom of the sea, searching for the remains of the Babel Tower energy core. Because this special crystal is highly radioactive, there was no need to dig three feet into the mud during the search. They only needed to use a special detector for a range search. As long as there was this crystal within 500 meters, the detector would immediately show a reaction.

At the bottom of the vast sea, the mecha warriors stood like towering pillars. They were not the main force in this search operation, but the guardians responsible for protecting the safety of the tens of thousands of evolved soldiers, because the location where the Gale Follower was sunk was outside the human defense line, so they might encounter a large number of sea beasts during the search.

These evolved soldiers were not pioneers. Even on land, they would not have any advantage against the same number of Beast King groups, let alone underwater?

Moreover, they were all wearing special heavy diving suits and carrying oxygen tanks, which made their movements even more inconvenient.

Evolved individuals were only physically stronger than ordinary people, but they had not yet evolved to the point where they could adapt to all environments. These evolved soldiers could not breathe underwater like the Followers, so every time the oxygen in the oxygen tank was used up, they needed to return to land to replace and replenish it.

This physical shortcoming added another procedure to the search work, which greatly prolonged the overall search time.

More than a dozen large ships were parked above the sea. Ladders for boarding the ships were placed from the hulls into the sea. Evolved soldiers whose oxygen had run out continuously climbed up the ships along the ladders.

"Did you find anything?"

"How is the situation on your side?"

"Still nothing…"

On the deck, the soldiers took off their waterproof masks and had a brief exchange while waiting for their oxygen tanks to be replaced, but the results were very disappointing.

Tens of thousands of people searched, but they had not found even a small, little-finger-sized core crystal in this sea area so far.

"The undercurrents are turbulent below this sea area, and the target is very small. It may have been swept to other places by the undercurrents when it fell into the sea… It may have drifted to the South Pole along the underground river!"

"I think the final result of this search mission may disappoint the Governor."

"If we could expand the search area…"

"This is outside the human defense line. There may be large-scale beast tide activities. If we rashly expand the search area, there may be accidents."

The soldiers were talking about it.

The search operation commander, who heard the soldiers' discussions with his own ears, had an ugly face. He knew very well the importance of this work. If they could find those crystal fragments, they might be able to rewrite the fate of all mankind!

"Plop!"

"Plop!"

After replenishing their oxygen, the soldiers jumped back into the sea.

The commander took a deep breath and said in a deep voice: "Prepare to continue moving forward and expand the search area!"

The sea area under his feet has been searched for a full forty-eight hours since the Kunlun Giant Ship killed the Gale Follower, and almost every inch of the mud has been turned over by them!

It can be determined that there are no core crystal fragments in this sea area.

It may be like what the previous soldier said, after being defeated by the Kunlun Giant Ship, those crystal fragments were rolled by the underwater undercurrents and landed in other sea areas.

With the commander's order, the entire fleet slowly moved forward.

But at this moment, an ear-piercing alarm sounded in the detection room!

"Alarm: A large moving object has been detected 40 kilometers ahead and is rapidly approaching our position!"

"Repeat…"

The ear-piercing alarm, along with the sonar operator's urgent report, resounded throughout the fleet through high-frequency loudspeakers.

After countless wars with sea beasts, the commander reacted immediately after hearing such an alarm. A beast tide was coming!

Buzz!

The mecha warriors, who were originally acting as lighting equipment at the bottom of the sea like pillars, moved their huge bodies immediately after hearing the alarm. Their electronic eyes instantly turned red, and they stood in front of the search personnel holding giant spears, acting as steel walls.

"All search personnel board the ship immediately!"

The commander issued an emergency evacuation order to tens of thousands of evolved soldiers. Although the four mecha warriors were there, a small beast tide basically could not pose any threat to this fleet, but the tens of thousands of evolved soldiers were staying at the bottom of the sea. Once they were caught in the aftermath of the battle between the mecha warriors and the beast tide, the consequences might be very tragic.

Upon receiving the commander's order, the soldiers began to evacuate from the bottom of the sea one after another.

The speed of the sea beasts was extremely fast, and they were coming fiercely. It took only a few minutes to reach the distance of tens of kilometers. When the beast herd was on the sea level in the commander's sight, half of the tens of thousands of evolved soldiers had not yet boarded the ship!

"Damn it…" the commander cursed in a low voice, and then shouted into the intercom: "Combat room, open fire for me and block the beast herd 3 kilometers away!"

Boom!

Boom boom!

Dense shells flew into the sky and landed extremely accurately in the beast herd, and suddenly a sea of ​​fire enveloped it.

But when the flames dissipated, although the number of the beast herd had decreased, their speed still did not decrease at all, and they still rushed towards this place like arrows.

Four mecha warriors rose into the air and charged towards the beast herd in front of them.

As a product of lv4 shelter, the mecha warrior is the top combat warrior. Its control system is extremely intelligent. They can accurately distinguish the battlefield situation, and after realizing that there are still soldiers who have not had time to board the ship, they deliberately control the battlefield within a range far away from this sea area.

Zheng!

An extremely dazzling laser cannon swept down, instantly cutting more than a dozen sea beasts in half. Their evolved and powerful bodies were vulnerable in front of the mecha warriors.

"Aooo!"

The sea beasts roared and quickly submerged under the sea, seemingly not intending to entangle with the mecha warriors, but rushed straight to the location of the fleet regardless.

They were entangled with each other, forming a huge beast ball, which looked extremely disgusting.

The mecha warriors and the artillery bombardment from the ships could only destroy the sea beasts on the outside of the beast ball, while the sea beasts inside were not affected in any way.

The beast ball approached the ship at an extremely fast speed, without any dodging or fighting actions.

This is very abnormal!

The commander frowned slowly as he watched this bizarre scene.