It is completely unknown when the surface people began to evacuate from the ground. Pen, fun, pavilion www. biquge。 infoThey may have started evacuating when the driver was taken away - no, maybe earlier. By the time the Dream entered the mine to investigate, it was possible that they had already started to prepare.

The underground base has been almost destroyed by Skyle. Ever since returning to Sunset City, Skyll has been sending Mana Orbs to the underground of the Sunset Meadows, either remotely or remotely, both in the wild and in the city. Under the attack of the magic orb, the surface people have completely abandoned the underground base, and they can no longer be seen underground.

In the process of destruction, it was not for nothing. Their automatron production line has been completely destroyed, and it can't be repaired - and it can't be repaired. The ground had become a ruin, and part of the ground on the Sunset Prairie had become undulating - I wonder how the people on the surface had dug up so many clods of earth. If you want to build such a huge underground structure, you must dig out a lot of earth, but no one has ever discovered this, and the secrecy of the surface people is really in place.

Skyll's biggest concern was that there must be a passage for these surface people to leave the Sunset Prairie, and it was through this passage that the mechanical whales found in the Great Sky Sea were created. Regardless of where their production base is, letting these dangerous elements escape is the most worrying thing. There are many demonic beasts in the Sunset Grassland, and they can't do any large-scale damage—they can't attack Sunset City—however, if it's in the middle of the Floating Continent, it's different. They must not be allowed to leave.

However, how did they get out? Although they had airships, Skyll didn't feel like they could fly over the "walls" with airships - it was impossible for such a large anomalous object to fly in the sky without anyone seeing it.

Judging from the fact that the surface people have built such a large underground base, it is possible that the surface people passed from underground. It was absolutely impossible for them to move such a huge steel whale in its entirety, and even if the parts were made, they should have found a way to bring them to the vicinity of the Great Sky Sea before assembling them.

So, where will this underground passage be?

It is not so easy to build a passage through the "wall". Transporting supplies to Sunset City in an airship is no small task, as it consumes a lot of mana and is not very efficient. If it could be transported through an underground passage, it would be much more efficient - and if it could be opened up an underground passage, it would be much less troublesome. However, there is a reason why the Floating Continent is not opened.

The reason for that is precisely because of the existence of "walls". The above-ground part of the "wall" is quite intricate, and its underground part is not simple. The peculiar geological structure of the area made it unsuitable for the construction of underground passages. If it is forcibly built, it may lead to the collapse of the tunnel. After some careful investigation, the magicians determined that even if they could build an underground passage, they would be quite limited in diameter and would have to be extremely tortuous, and if they did, they would not be able to transport anything at all, and it would be a problem to get people through. Moreover, it is difficult to guarantee security - in case there are monsters that like to burrow into the ground.

So...... Can the people on the surface build it?