At This Moment, the World Has Entered the Ice Age

"Then what is the last line of defense?"

Yu Xiu was a little surprised. He didn't expect that Atlantis' defense system was so strict.

The first three lines of defense have opened up Yu Xiu's vision. What kind of surprises will the fourth line of defense bring to him!

Ying Ziyue did not speak, but instead took Yu Xiu out of Atlantis in a submarine.

A hundred miles away from Atlantis, Yu Xiu saw another incredible scenery.

The submarine signal towers flashed with dazzling red lights, and special driving sound waves played uninterruptedly for 24 hours.

These submarine signal towers are set up every few kilometers, watching the red light not far away form an arc and disappear into the dark water.

Ying Ziyue said: "This fourth line of defense is in these submarine signal towers."

These submarine signal towers surround Atlantis, forming a special ~surround signal belt.

Just like satellites near the planets, the signals emitted by these submarine signal towers cover a hundred miles around Atlantis!

Drop...du...drop...cross

Above them, a submarine made a strange noise and moved slowly along the sky above the signal tower.(Read more @ mtlarchive.com)

Upon seeing this, Yu Xiu couldn't help asking, "Winning the group, this is the special unit again?"

Ying Ziyue shook her head slightly and said, "These submarines are all unmanned!"

Unmanned submarine? !

The Z-series submarine is a submarine recently developed by the Marine Research Base.

It can be said that because of the establishment of Atlantis, the Z-type unmanned submarine project was remanufactured.

These unmanned submarines are extremely cost-effective, and after reducing the cost of manual driving, the whole is manufactured for the purpose of performing the task.

It contains the core chip for unmanned driving, which can receive extremely weak signals in the deep sea.

The small nuclear power system used inside can still have strong maneuverability while ensuring its power!

These unmanned submarines rely on the signals emitted by the signal tower to move around Atlantis like satellites.

The Z1 submarines put into use today only have the most basic detection functions, but these submarines are like the eyes of Atlantis.

The wind and grass within a hundred miles of Atlantis were transmitted into the central monitoring room, no matter how dark the sea water was, it was revealed under the detection of radar signals!

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After reading the defense system of Atlantis, Yu Xiu's notebook was already filled with a lot of notes.

Ying Ziyue said calmly: "I am going to build Atlantis into the first research center of underwater civilization. Naturally, the line of defense here is the highest treatment."

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"The defense lines of civil and military buildings are completely different, you have to consider it!"

Civil and military use are two different treatments. The first criterion of military use is to achieve the goal. A large amount of resource tilt is to ensure that military goals can be protected!

For civil use, the living standards of the residents must be considered, and the construction of Atlantis is just a template.

For a real civilian submarine city, Yu Xiu has to figure out a new type of construction plan by himself.

"Finally, I will take you to see the experimental greenhouse of Atlantis."

To develop the submarine environment, it is natural to cultivate plants and animals that adapt to the marine environment.

At the outermost periphery of Atlantis is the established marine experimental greenhouse, planted with new marine vegetation. Death.

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