Just in the exposed dark gap in that urban area, there is a giant electronic rail gun hidden, powered by a helium three-nuclear reactor, and the base alone is as big as two standard football fields.

This place was originally a closed and isolated cube space. Only senior employees, Octopus and a small number of low-level employees were qualified to contact. However, under the command of the Academy Urban Emergency Security Regulations, the place was finally exposed to the air.

The ceiling dome, ground and walls in the space are covered with a layer of steel plates, and a searchlight is placed every ten meters on the wall. The bright beams reflected make it bright as daytime.

A steel platform similar to a scaffolding surrounds the electromagnetic railgun, and below the platform is an autonomous transport vehicle. Before the electromagnetic railgun is completed, the octopus will automatically unload the cargo from the vehicle and piece together the transported parts onto the railgun.

Dr. Bain from Academy City stood on the scaffolding beam platform flush with the electromagnetic rail gun, and looked at this steel creature, which symbolized one of the highest force in Academy City, with a calm and calm look.

I saw two parallel metal rails above the giant base, with a cylindrical shape, with a bright silver luster on the surface, pointing diagonally upwards to the sky like beams and pillars, just like swans stretching their necks, ready to sing.

At the center end of the two guide rails, a huge cannon shell was placed, and countless mechanical octopuses stretched out their steel tentacles and flew outside the shell for maintenance.

"Preparation of second-level cannon on earth."

The sound of the central intelligent brain resounded through this spacious space. The mechanical octopus surrounding the electromagnetic railgun seemed to have received orders to quickly complete the maintenance work and fly away quickly.

Dr. Bain, standing on the beam, has not personally engaged in criminal activities for a long time. His years of scientific research career has made him less violent and more peaceful.

He glanced at the electromagnetic rail gun, pressed a button on the console, and immediately mapped a three-dimensional projection from the console.

The projection shows the appearance of the inside of the electromagnetic railgun shell.

Sayya, a special creature cultivated by special cells, is huddling in the flat space inside the metal shell in the posture of a green-haired luoli.

For safety reasons, a buffer layer was deliberately placed inside the shell, which could reduce the G-force load caused by acceleration. Therefore, Sayer seemed to be lying in a sleeping bag, looking particularly petite and pityful.

Dr. Bain looked at his creation. In the spacious space, various sirens and prompts were connected. Even though the school city, with the assistance of the octopus wise servant, minimized the number of low-level employees as much as possible, the operation site of this giant project still seemed noisy and noisy.

Dr. Bain stretched out his fingers as thick as a carrot, pushed the gold-rimmed glasses on the bridge of his nose, and whispered to Shaye with a expressionless face: "This is the first time you have shown it to the world. Are you nervous?"

The girl in the shell tilted her head, and a gentle smile flowed across her innocent face, as if she was saying: "Don't worry about me."

“…”

Dr. Bain said nothing, just nodded.

The cannon on earth has forged his hard work, and Sayer is even more like a "daughter" to him.

Although Bain knew that after experiencing the three cumbersome procedures of the electromagnetic railgun main control system itself, the secondary inspection of the mechanical octopus, and the third inspection of the central intelligent brain, the probability of the human cannon failure was slim, but the nervousness still captured him, causing a trace of undetectable anxiety to flash across his weather-beaten old face.

The octopus wise servants were actually doing all the work before the launch in an orderly manner. They stretched out their tentacles and dragged temporary buildings such as scaffolding to move backwards.

"Human cannon, third-level preparation."

The ultimatum from the central smart brain declares the full launch of the Academy's urban emergency security regulations.

In the midst of the attention, the Helium Three reactor began to supply energy.

It was enough to evaporate the huge energy of a whole reservoir in an instant and pour it into the battery. The metal smelting technology from the Zitarui people prevented the guide rails of the electromagnetic railgun from being affected by high temperature and melted on the spot.

Bain clenched his fists a little nervously, and he stood on the beam platform, staring at the base of the rail cannon.

Even without three-dimensional projection, Bain could imagine that Sayer was lying in the confined space inside the shell.

"emission."

The slightly pale central intelligent brain electronic sound resounded throughout the underground space. With the willful pour of electromagnetic force, the gun barrel in the guide rail disappeared instantly.

No, it is not that it disappears, but because the speed of travel is too high, which has exceeded the limit that humans can see clearly with their naked eyes.

Dr. Bain, who has undergone human intensive modification surgery, is still savoring the remaining pictures in the retina.

The strong wind swept by shells barely arrived in front of Bain. He raised his head suddenly and looked at the sky in the distance.

The shells fired by the electromagnetic railgun climbed all the way, and the streamlined metal warheads could minimize air resistance to obtain the highest theoretical speed.

In fact, according to the estimates of the internal personnel of the Academy City, the warhead fired by this metal rail cannon, known as the "human cannon", can easily break through the atmosphere at a certain launch angle and be near the orbit.

After cutting off the power source, the shell will be captured again by gravity and fall downwards - similar to ordinary intercontinental ballistic missiles.

However, thanks to the technical capabilities provided by the Zitari people, the shells fired by the electromagnetic railgun can be activated again during the first fall and break through the atmosphere again - this process can be repeated 3 or 4 times, depending on the amount of fuel carried by the shells.

This means that this metal cannonball is like a frog that keeps jumping in the low-Earth orbit. With the help of the earth's gravity trap, it can reach any corner of the blue planet.

For electromagnetic railgun shells that can travel around the world, hitting the Olympus ships floating in the sky is too simple, not to mention that the intelligent octopus woven into large nets around the ship also creates a huge magnetic field through the head and tail connection, guiding the bombardment direction of the metal shells.

Zeus is worthy of being the God King of Olympus. On the verge of life and death, he can actually keep his mind and summon thousands of feet of thunder and bombard the shells.

Not only him, the goddess of wisdom Athena raised her sword high, the sea god Poseidon picked up the trident, the god of the underworld Hades picked up the hook chain, and all the main gods used their own means to try to block the progress of the shells.
Chapter completed!