With all kinds of doubts and speculations, many Gu masters finally found a section that had been carved into stairs along the cliff and came down into this huge underground cave.

After passing through a vast plot that was obviously planned as a field outside the city, everyone came to the foot of this spectacular dungeon.

From a distance, the city wall, which was once just a black line, now looks like a magnificent and majestic look that is completely different from the distance. The city wall built with blue and black stones is tall and thick, from the bottom up, it is no less than a building with more than ten floors. If ordinary people stand at the foot of the city wall and look upwards... just looking at it, they are extremely dizzy. How can they talk about siege and climb?

In addition, Zhang Wang noticed that these huge blue-black striped stones have extremely high hardness!

His nails that were comparable to ordinary cast iron were scratched on it, and they only made light white marks. They disappeared again with just one less application, and there was no damage at all!

With such hardness, not to mention the mortals in the Gu Master world, even ordinary first and second-level attacking Gu insects can't help but pick them up!

Even if it is a level 3 Gu worm, facing this city wall that is at least ≥≥ thick, it is just a scabies injury. It cannot shake its roots at all.

but……

Whether in the earth or the world of Gu, the means of attacking the city walls are not only human power.

Whether it is the artillery bombs on the earth or the strange and targeted insects in the Gu Master world, they can cause devastating damage to this seemingly indestructible city wall.

Therefore, the designer of this city wall obviously considered the attack of Gu Master.

Therefore, the upper part of the entire city wall is divided into three levels of defense systems: upper, middle and lower!

...

Unlike ancient China where there was only one floor on the top of the city wall for soldiers to fight and defend. The walls of this underground city were divided into three defensive platforms for soldiers to fight on the lower, middle and upper, based on a height of more than ten meters.

The bottom and most basic defense system is the first layer of defense formed by the shooting ports based on the platform at the top of the city wall and the help of a line of breast-height female walls.

On this platform with a width of seven or eight meters, even in the battle, a large amount of weapons, oil pans, braziers and other combat supplies are enough for four or five rows of soldiers to fight at the same time. If necessary, the cavalry can even be allowed to gallop back and forth on this wide city.

The second layer of defense is a pier that rises on the city wall every fifty meters and has a larger base area.

Of course... these piers are not used to ignite beacons, but are places for soldiers to defend and even rest in daily life.

These piers that are at least three stories taller than the city wall, and can only be climbed through the internal stairs are divided into three levels. No matter which floor, there are many shooting ports.

The shooting port is the same as the shooting port on the female wall, and is designed to be small on the outside and large on the inside. It is convenient to defend against the flowing arrows from outside, and also adjust the angle when shooting from the inside out.

In addition, there are also long-range large weapons such as stone throwing tools and bed crossbows on the top of the pier. With the help of the advantageous height, they have a range suppression advantage over most of the same level siege equipment outside the city.

The last layer of defense is not the city wall itself, but is built behind the city wall, and there will be a huge hexagonal fortress every five hundred meters.

Judging from this shape design and the height design exceeding the city wall, this is obviously a military building that takes into account the actual defense combat.

The whole body is made of hard rocks and has a defensive power no less than the city walls.

The spacious top and interior area can accommodate a large number of soldiers to rest and live, and in combat it is a shelter for soldiers and a solid fortress.

The spacious bows and arrows at the top of the fortress provide soldiers with a good angle to look down at the city wall and attack outside the city.

When the city wall defense has not been broken, you can use the stone throwing tools at the top of the fortress to strike the enemies outside the city. When the enemy attacks the city head, the archers in the fortress can support their own soldiers on the city wall by shooting.

Even in the worst case, the city wall was captured by the enemy.

Then the enemy troops rushing down the city wall and attacking the inner city will also face the threat of the fortress behind each main staircase. If you want to attack this fortress...the hexagonal and full of shooting ports are enough to allow the soldiers in the fortress to take advantage of the attack. There is no blind spot.

The three defense systems of the upper, middle and lower are progressing layer by layer and covering each other, which will definitely form a long-range attack force several times stronger than a single city wall.

On the back of the city facing inward, the large number of hidden soldiers and the design that facilitates the formation of soldiers in the city to meet the enemy will definitely put the enemy troops who break through the city wall in an embarrassing situation of being unable to advance or retreat.

As long as the army defending in the city is not too weak, it is not difficult to concentrate the army and drive the enemies who have broken through the city walls back.

The builders of this dungeon obviously considered the large-scale war with Gu Masters, and the entire city wall defense system was as solid as a rock.

When the strength of the two sides is not too far apart, this is almost an almost impossible line of defense to be broken through.

Zhang Wang, who climbed the city wall through the opened city gate, even saw the iron pot, torch iron frame, arrow cluster, flagpole and shield reserved iron pipe sockets.

And among the beacon piers and the forts behind the city wall, there are even wooden beds, cabinets, tables and chairs prepared... Obviously, the people who designed and built the here have prepared very much... and wait!

Zhang Wang's pupils shrank, and his body instantly turned into a afterimage, returning to the castle he had just left.

A thick layer of dust had fallen into the room.

"But..." Zhang Wang's nails became sharper again, and he gently stroked the table on a table prepared for soldiers-!

The white woody inside was exposed in the scratches.

Although the inside of the wood cut into tables and chairs maintains the original color of wood. It is not difficult for Zhang Wang to tell that the wood used on this table is very fresh... Although it is difficult to judge the specific time. Generally speaking, this wood is very fresh but can be determined...

After pondering for a moment, Zhang Wang quickly rushed out of the fortress and came to the street full of Gu Masters who were wandering around.

He chose a house at will, and reached out and pulled the wooden door directly from the door frame.

Zhang Wang couldn't wait to break off the rough iron door shaft that was twisted and deformed from the door, and put it in front of him to observe carefully...

The design of the door shaft is very primitive and rough, and the iron used is extremely inferior. However, this door shaft is very new!

Although it is not brand new, it can be seen that it has not been too long. At most, it will look like three to five years after it was manufactured and installed on the door...
Chapter completed!