Throughout the underground base, the more heavily defended are passages such as lifting platforms that can transport large quantities of goods. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 infoEach lift platform has multiple covers for the passages, basically one for each floor. The function of the cover plate is similar to that of a barrier security door, but the protection capacity is not as high as that of a barrier security door.

Due to the large height difference of each floor of the entire underground base, the transportation mode in the base is mainly based on lifting platforms and elevators. The lifting platform is used for the transportation of large goods, and the elevator is used for the transportation of personnel. However, inside the Tower of Babel, there is a spiral staircase that surrounds the inner wall of the Tower of Babel, which is used for evacuation in case of emergency.

This spiral staircase wraps around the inner walls of the Tower of Babel, from the top to the bottom, from the -1 floor to the -20 floor, each of which is connected by it. This spiral staircase, like a fire safety door, is usually strictly forbidden to be locked. The overall material of the spiral staircase is exactly the same as the main material of the Tower of Babel, which is extremely difficult to break.

Seeing this, everyone here must be very curious as to why such a strange staircase exists, and whether the original purpose of its construction was really a staircase? Indeed, the original appearance of this spiral staircase is not a staircase, it was originally used to install the force field cable of the gravity generator. After the stargate was sent underground and the gravity generator was removed, the mounting grooves for the force field cables remained.

During the subsequent construction of the Tower of Babel, this huge recess was converted into an emergency staircase for emergency use. Originally, the original intention was to be a good emergency staircase, but now it is not good for An Ruoxuan and them. -The entrance to the emergency staircase on the 20th floor is only blocked by two simple doors, and no one is sure if the Starworm will be able to spot it.

Although the emergency staircase was not very wide, the size of a tank beetle would definitely not be able to pass through, but the sword mantis beast and the poisonous explosion insect could easily pass through. The only thing An Ruoxuan can pray for now is that the star worm doesn't find that entrance, and likewise doesn't find out where those passenger elevators are.

Regarding the wisdom of the star worm, the debate within the federation is not once or twice. Although various evidence has proved that Starworms do not possess the intelligence of humans in the usual sense, since the appearance of Blade Warriors, no one can guarantee that there will be intelligent Starworms.

For the on-site combat readiness arrangements, An Ruoxuan has already made preparations. Near the elevator shaft of the four occupants, An Ruoxuan arranged for the team to defend. All four crew elevator boxes were parked on the -20th floor, and the Cer engine-powered crew elevators had no cables and did not stop running due to the stargate energy barrier.

At the opening of the 19th floor of the emergency staircase, An Ruoxuan personally led the team to construct three lines of defense, even if the star insects could rush up, An Ruoxuan's defense pressure would not be too great. In the emergency staircase, An Ruoxuan and the others set up a lot of barricades, which should be able to block the attack of the star insects.

-The elevator door on the 19th floor has been opened by An Ruoxuan and them, and a large amount of fast-drying special cement has been poured into the elevator shaft by An Ruoxuan and them. This kind of fast-drying cement can be completely dried in just five minutes, and its strength is completely comparable to that of high-grade military cement, which is also the exclusive black technology of the Federation.

An Ruoxuan didn't expect these quick-drying cements to be able to block the invasion of star insects, but they could delay for a while. In fact, the only Star Worms that have appeared so far are the self-exploding beetles produced by the tank beetles and the Wyvern that can fly through the elevator shaft to the -19th floor, but they are too large, and the other Star Worms have neither the ability to fly nor the ability to climb.

When An Ruoxuan and the others were already in full array, on the -20th floor, there was another change in the Star Gate. Tank beetles, wyvern beasts, An Ruoxuan, the main class of star insects they deduced finally appeared, and the giant cannon beetles still have no shadow for the time being. More than thirty Wyvernmons appeared in the first batch, and there were more than twenty tank beetles.

After the appearance of the tank beetle and the wyvern, the corpses of the sword mantis beasts that had been scattered everywhere and piled up suddenly dissipated like flying ashes, turning into streams of light and pouring into the stargate. Then, there was another huge surge in the stargate, and after the surge subsided, one by one the brand-new green-veined sword mantis beasts slowly crawled out of the stargate.

The number of these re-emerged green-veined sword mantis beasts was not large, no more than thirty in total, and their bodies were shining with green light. From the outside, these green-veined sword mantis beasts are not much different from those that appeared before, but if you look at them in terms of momentum, they are simply very different.

If Chen Yi could see this scene, he would definitely be able to recognize that these new sword mantis beasts in front of him were the kind of sword mantis beasts that had fought with him before. It's a pity that momentum is hard to feel with images. Mixed in with the other sword mantises, the thirty sword mantis beasts were inconspicuous.

For the situation on the -20th floor, An Ruoxuan and the others were still able to detect some through some optical detection equipment that had not yet been affected by the stargate barrier. Through the image information shared by "Xingtian", An Ruoxuan and the others also discovered the appearance of tank beetles and wyvern beasts. An Ruoxuan and they can't do anything now, so they can only wait for the star worm to come to the door.

At present, what made An Ruoxuan feel most relieved was that those poisonous explosion insects and knife mantis beasts were still only attacking the falling barrier security door, and did not attack the movement of the elevator and emergency staircase entrance. For the barrier security door, An Ruoxuan is still very confident.

Sure enough, as An Ruoxuan expected, whether it was a sword mantis beast or a poisonous explosion insect, the attack on the security door of the barrier could be described as painless. At most, the attacks of the two leave pits and scratches on the smooth surface of the barrier security door, and cannot cause structural impact on the barrier security door at all.

The new Tank Beetle and Wyvern have also been added to the attack on the Barrier Door, but they are also unable to deal substantial damage to the Barrier Gate. Especially the dragon breath of the Wyvern Beast, there is no way to do it for the barrier security door, which is specially resistant to high temperatures.

Just as An Ruoxuan and the others were slightly relieved, a scene that suddenly appeared in the image stunned them. I saw more than a dozen sword mantis beasts appear from the group of sword mantis beasts, and the two knife arms flashed with dazzling green light, and then the knife arms slashed the security door of the barrier.

In front of these sword mantis beasts that glowed with green light, the originally impregnable barrier security door was like butter inserted by a hot knife, and it was easily cut open one by one. It was only after a few waves of attacks that An Ruoxuan and the others regarded as an impregnable barrier that the security gate was completely breached.

"It's that kind of green-striped sword mantis beast", Chen Yi on the side spoke silently, and An Ruoxuan, including all the team members present, became silent. For the future, all people become extremely confused.