Buzz Buzz......

As soon as the armor-piercing bullet approached, the curtain layer of air flashed, and at the moment when the bullet hit the curtain veil, the air layer quickly appeared and disappeared.

All the bullets were bounced back and fell to the ground with a crackle.

"Invisible Defense Film!"

Seeing this scene, Sigrid immediately realized that this should be a defensive film similar to Saita's patented product, just like the protective film that now shrouds and protects all citizens.

However, Sigrid doesn't think this layer of defense is as strong as Saita's products.

Immediately ordered to retreat, and when all the land tanks retreated a few hundred meters, Sigrid gave an order: "Type B tank, shoot heavy armor-piercing shells!" ”

Ho Ho Ho Ho ......

Sharp heavy armor-piercing projectiles the size of sweet potatoes shot out and slammed into the invisible layer of defense, and a large number of roars followed suit.

This heavy-duty armor-piercing projectile has a zero-point trigger that triggers an explosive armor-piercing effect at the same time it touches the target.

With the continuous explosion, the entire curtain air layer continued to appear in front of everyone for a long time, constantly shaking.

A round of heavy armor-piercing shells, about 200 or so, all bombarded the curtain air layer.

Luo Lun's defensive formation trembled slightly, and under the overall control of the Alchemy Tower, it quickly stabilized, this is the [Air Curtain Defense Layer], as long as the total energy does not have problems, it can almost achieve the effect of permanent defense. Unless it is broken by an extremely strong attack in a short period of time.

And this heavy armor-piercing projectile has obviously reached this level by repeatedly attacking at one point and another.

With a pop, an air curtain burst open, but in the eyes of Sigrid and the others, this air curtain shook slightly, rippling like a wave, and quickly bridged.

Sigrid's body shook: "Impossible! Heal on your own? ”

Even the protective film products of Seta Company cannot reach the level of self-healing, and if they are damaged in the invasion of wars or alien creatures, they need to be repaired by Seta's specialized engineers, not just a slight shake in front of them, and it will be completely healed.

In the Alchemy Fortress, Luo Lun immediately began to consolidate the [Air Curtain Defense Layer] magic circle that was almost unstable just now, and the powerful attack magic circle had not yet begun to be used.

Sigrid outside the factory had already retreated by this time, and after getting a rough idea of the strangeness of the place, she decided to report to Faun before proceeding further.

Faun learned everything synchronously through the real-time camera, and when Sigrid returned, he immediately said, "Wait, wait until Colonel Steven comes." ”

After waiting for a moment in the fortress, Loren found that the military had indeed evacuated again, and he immediately came out of the alchemy tower and began to busily consolidate the magic circle.

And some more time was spared to move the energy trough in the factory to the fortress, and with the quick action of Guboda Light and Tarri and others, soon all the production equipment was transferred to the production area of the fortress.

Loren noticed that although the family members were trying their best to restrain themselves, they were obviously flustered. At this moment, he didn't know what to say, since he had chosen to take this path, he had to face the situation that might come today.

After installing all the energy gauges, Loren checked again to see if there were any missing.

He didn't dare to go too far from the passage to the Alchemy Tower, and looked at the main system debugging process on the display, which had reached 88%.

As soon as the process is 100% complete, it will be the moment when he implements his plan, but at this time, he can only wait patiently, trying his best to defend against the military's tentative attack.

As a last resort, Loren did not want to break out into a large-scale conflict with the military for the time being.

It was nearly dusk outside.

Loren was wondering if he could talk to everyone in the fortress when a slight vibration reached him, and he immediately returned to the Alchemy Tower.

The Battlestar is very large, and in the depths of the fortress, even if it is attacked from the outside, the people living in the fortress may not be able to feel it, let alone outside the factory.

Luo Lun was able to sense because of the formation, after he returned to the Alchemy Tower, he immediately found that a large part of the [Air Curtain Defense Layer] had been damaged, although the magic circle was immediately repaired steadily, but there were still cannonballs that fell into the factory, blowing up the corner of the nearest workshop.

Five hundred meters outside the factory, a tall and thin middle-aged man in a colonel's uniform stood in front of a row of self-positioning mortars, staring calmly at the corner of the bombed-out workshop.

This man was none other than Colonel Steven.

Faun and Sigrid stood behind him, staring reverently at Colonel Steven's back.

A legendary first-class commander who commanded his men to kill more than twenty golden roe deer beasts made Faun and Sigrid, who were soldiers, have to admire and admire.

However, only Steven knew that the legendary experience of killing the golden roe deer beast was actually due to his own good luck.

It was very effective to concentrate all the auto-positioning mortars on one target, but the first attack destroyed the invisible defensive film, but when the shells penetrated it, it recovered on its own.

"This thing isn't stable." Steven came to a conclusion and ordered in a deep voice, "Concentrate fire......

At this moment, a strange voice came from inside the factory, fluttering, making people unpredictable, and directly interrupted Steven's order.

"If you choose to attack, aren't you afraid of killing your soldiers?"

Steven was stunned for a moment, and then replied: "In the face of a guy who violates the ban and builds a Battlestar without authorization, it will make more sense to kill you!" ”

Boom Boom Boom ......

The auto-positioning mortar roared, and the oval-shaped shell was fired, automatically positioning an attack surface, and frantically crashing into the [Air Curtain Defense Layer].

In an instant, the defense layer was torn apart, and several shells fell into it, directly blowing up one of the workshops, and rubble flew everywhere.

Suddenly, two arm-thick cyan lightning flashed out of thin air inside the factory, colliding together from two angles, merging into a single force, and hitting a self-positioning mortar through the broken [Air Curtain Defense Layer] in an instant.

It didn't end after hitting the mortar, as if it had a spiritual power, the cyan lightning burst out through the base of the mortar that was hit, extended to the second mortar, and carried it up with a bang, and then jumped to the third mortar and carried it away again.

Soon the fourth mortar met the same fate, and the cyan electric glow began to weaken at this time, and when it jumped into the base of the fifth mortar, it only caused the cannon to instantly tilt, lose its center of gravity and overturn.

Steven, who was originally extremely determined, was like an earthy color, and quickly retreated back dozens of steps, while Faun and Sigrid, who were standing behind him with reverent eyes, were knocked to the ground lying on their backs, looking confused.