However, these are not over yet, these can only be said to be the basics.

Outside the city wall, Ant-Man also dug a very long ravine. Each of these gullies is about ten meters deep, and the walls on both sides of the gully are very smooth. It is said that they were sprayed with some kind of special oil. on top.

Not to mention during the day, even at night when it's covered in ice, it's still extremely slippery here.

At the bottom of the ravine, there are of course all kinds of hidden weapons. In addition to the various daggers or red tips thrust upward at the bottom, there are also many instant concealed weapons on both sides of the ravine.

In this way, if someone accidentally falls in during this process, even if they have high cultivation and can react instantly, it will often be difficult to find the landing point because the walls on both sides are too slippery, making it difficult to fly up again.

And once they can't fly up, they will only have to fall continuously. As long as they fall below, the daggers below will not be able to kill them, and the instantaneous hidden weapons on both sides will make it impossible for them to hide.

Therefore, if you fall, you will almost certainly die.

Of course, the overall structure of the gully is not that simple. Its bottom surface can actually be turned over. In other words, when enough corpses accumulate here, hidden weapons such as daggers or bamboo tips may be used. Bodies piled up and covered up.

It doesn't matter, as long as the mechanism is activated, the bottom will automatically flip to the other side, and then the other side will be almost exactly the same as this side, and continue to madly assassinate the fallen enemies.

The overturned corpses will also fall directly from the top due to inertia and fall into the lower level where the corpses are specially processed.

It is no exaggeration to say that as long as the gully is not destroyed, it can always become a big killing machine.

These are all formed from the valuable experience gained from the last million-army battle and then improved.

Secondly, outside of the ravine, Ant-Man and craftsmen also worked together to build three huge Yanchang City walls.

Compared to the inner walls of Yetian City, these walls are taller, larger, and stronger.

Their role is very important. Basically, it can be said that they are not only an important corridor connecting Yetian City and the other two virtual cities, but also a key link in the outer city's defense.

They need to bear the opponent's direct attack from here, and at the same time, they need to prevent the enemy from entering from the first gate from the outside and playing a certain role in defense and counterattack when they attack the inner city.

Therefore, its solidity and height are far below the defense of the inner wall.

Of course, they are not one, but several.

For example, although the road between Yetian City and No. 2 City is a hundred-meter-wide road, it is cut into several roads by these tall city walls.

In this way, the city defense becomes very perfect.

They will eventually converge on the main road in the center. However, in order to merge into it, they must continue to enter deeper aisles in the process.

Han Sanqian's men and horses can stand on the city wall and attack them from above on the way to the passage. At the same time, people can set up ambush and defense points at each level in advance.

There are layers of defenses. No matter how powerful the enemy is, if they want to enter the main road, they will be beaten by Han Sanqian's various levels.

After that, it was the core of the entire city defense. JrNovels.com