Wuchengguan is quite majestic, with walls dozens of feet high.
Outside Guancheng, there are two circular fortresses about a hundred feet in diameter.
Like two fangs standing outside, it prevents the enemy from directly attacking the main city.
If they directly attack Wuchengguan, the enemy will be attacked from three sides. Of course, the Song Dynasty will not be stupid enough to attack the main city of Wuchengguan.
But Wuchengguan is not a natural barrier. The mountains on both sides of the main city are full of loopholes.
These mountains are not connected into one, but are separated by more than ten canyons, and even the spiritual veins are intermittent.
Under such circumstances, it is simply impossible to deploy a large formation to cover the entire Wucheng Pass area.
We can only set up small formations to protect each small mountain range. This is why this place is difficult to defend.
There are inevitably gaps between these small formations. To fill these gaps, additional fortresses need to be built.
Building a fortress requires more people to garrison it, which increases the cost of defense.
The width of these mountains is also very small, the widest point is less than ten miles, and the highest mountain is only a few hundred feet.
To the south is a plain, making it easy for the enemy to launch an offensive.
For more than ten years, the Song Dynasty did not attack the main city of Wuchengguan, but instead attacked these fortresses.
In siege battles in the world of immortality, there are also sneak attack tactics in which monks above the foundation level directly fly over dangerous passes and break into the enemy's rear.
Back then, when various countries were competing for hegemony, such tactics were common.
But as time went by, various countries also came up with countermeasures, which were to strengthen the walls and clear the fields, and to set up large formations behind dangerous passes and send experts to guard them.
The enemy flew over the dangerous pass and reached the rear.
Our side relies on the large formation to fight a war of attrition with the enemy.
Instead of confronting the enemy head-on, they constantly send out masters to attack the enemy's mid- to low-level monks and hold them back.
When the enemy's high-level monks take action, they immediately return to the formation.
Attacking a large formation by force outweighs the gains and losses, and is not much different from directly attacking a dangerous pass.
As a result, the enemy is exhausted and does not even have a safe place to rest.
On the other hand, our side is waiting for work. After a period of time, the enemy can only withdraw.
Our own side is chasing after each other. The deeper the enemy advances, the harder it will be to evacuate.
Our own monks stationed at the dangerous pass intercepted again and easily wiped out all the enemies who came in.
When there is no absolute advantage in strength, the tactic of flying over dangerous passes and deep behind enemy lines will be used, and whoever uses it will die.
The number of Jindan monks in the Song Kingdom is not as good as that of Zhao and Zifu, and the number of foundations is even worse.
Therefore, the monks of the Song Dynasty did not dare to cross this thousand-mile low mountain and could only continuously attack the fortress.
If we can capture a fortress, we can cross the low mountains and outflank Wucheng Pass without fear of being taken back.
More than ten large flying boats of the Netherworld Sect finally landed north of the main city of Wuchengguan.
The monks on the flying boat came down one by one and lined up on the ground.
There are many families in the Netherworld Sect's territory, with a total of about 300 families. This time, more than 400 foundation-building monks and more than 5,000 qi-training monks were dispatched.
In addition to some monks from our sect, there are more than 600 foundation-building monks, more than 7,000 qi-training monks, 20 Zifu monks, and a golden elixir monk. This scale is enough to destroy the general golden elixir forces.
A Jindan monk also came out of Wucheng Pass, and five Zifu monks came to receive him.
Master Minghai took the ancient palace master and several other monks from the Purple Mansion of the Netherworld Sect and followed the monks from the Wanling Sect into Wucheng Pass, while the others continued to wait outside.
Two hours later, more than a dozen Zifu monks came out, leading the Qi practitioners, and the Foundation Establishment monks dispersed.
Wang Daoyuan and other families from the northern part of Qingli County, a total of more than 400 Qi-training monks and more than 30 foundation-building monks, were brought to a fortress.
It is said to be a fortress, but it actually forms a small city.
There are seven fortresses east of the main city of Wuchengguan. The fortress where Wang Daoyuan and others came to is the third one from the east.
Because the main force of the Wanling Sect is placed in the main city of Wuchengguan, it is convenient to support the fortresses at any time.
Therefore, the Song Dynasty's main attack direction has always been in the easternmost and westernmost areas. Because it is far away from the main city, there is a chance for a successful sneak attack.
Other fortresses have suffered much less attacks. After all, they are close to the main city, so support here is faster.
The Dongsan Fortress where Wang Daoyuan is located has not encountered a single probing attack in several days.
After all, they are here to provide support. If the Wanling Sect puts them in the most dangerous place, they are really afraid that they will give up and give up.
The Zifu monks of Wanling Sect led Wang Daoyuan and others into Dongsan Castle. There were many monks stationed inside.
The Zifu monk shouted: "Leave a hundred Qi-training monks to help control the city-defending magic weapons. The rest of the monks will all evacuate. This fortress will be garrisoned by the supporting monks from the Netherworld Sect."
Soon, an early stage cultivator from the Zi Mansion came down from the city wall and said with a smile: "Thank you fellow Taoist from Netherworld Sect for coming to support us. Please send someone up to the city wall to hand over to us."
Wang Daoyuan led people up the city wall, and the monks from each family and the monks from Wanling Sect handed over each section of the wall.
The side of the entire fortress facing the enemy is only thirty feet long. Two hundred people can defend it, and there are even shifts.
This thirty-foot-long city wall has thirty second-order high-grade demon-slaying crossbows and three third-order low-grade demon-destroying crossbows arranged on it.
These demon-killing crossbows have a low success rate against flying monks.
However, it has excellent effects against large-scale magic weapons used by the enemy to attack cities, including flying warships.
Wang Daoyuan replaced the Wanling Sect's city-defending monks with two hundred family monks.
One hundred Wanling Sect monks who controlled bows and crossbows continued to stay on the city wall.
After the city wall was replaced, the monks from the Zifu who were guarding the city took them to see the warehouse in the city, where there were more than a hundred spare demon-killing crossbows.
The last step is to inspect the formation. The formation used in this castle is also the Golden Evil Soul Formation.
However, this formation is not a simple second-order high-grade formation, but has undergone many improvements.
This Jinsha Juehun Formation adopts the method of magical weapons, with a total of twelve formation eyes, nine of which are suppressed by second-level high-grade magical weapons, and three of which are suppressed by third-order low-grade magical weapons.
Naturally, these magical weapons are all made of metal, mainly flying swords, as well as darts, needles and other Yin people's magical weapons.
Each of the second-level high-grade and third-level low-grade magic weapons has a metal shield to defend against enemy attacks.
After all, the Golden Evil Soul Formation is only an offensive formation and has no defensive effect. It can only make up for it with magic weapons.
This formation is extremely important, and the Wanling Sect is unwilling to let Wang Daoyuan and others take over, so they send two foundation-building monks to continue guarding it.
Wang Daoyuan didn't care. They were here to defend the city, not to seize power.
If the Wanling Sect wants to defend, it is natural to let them do as they please, and it can save two manpower for foundation building.
After everything was handed over, the Zifu monks who were originally stationed here withdrew from the fortress with more than 200 people.
Wang Daoyuan successfully took over the city defense and became the supreme commander of the fortress.
Although I have no experience in defending a city, I have read many military books in my previous life, so I still understand the basic layout.
The most important formations and demon-killing crossbows have been arranged, so there is no need for him to worry about it. All he has to do is arrange the manpower he brought.
He ordered all the Qi-training monks who were good at long-range attacks to come out. Immortal cultivators paid more attention to long-range attacks, so there were quite a few monks who were good at long-range attacks, about a hundred of them in total.
Almost all of these people are proficient in one or several long-range attack spells and have strong attack capabilities, but it is too wasteful to defend the city.
All the work of defending the city was left to the monks who were not good at long-distance attack. Those who were good at long-distance attack were used as mobile troops to support wherever the situation was difficult.
More than 300 Qi-training monks who were not good at long-distance attacks were placed on the south wall, while 200 were placed on the north wall.
The monks on the north wall are completely in reserve. Unless someone flanks them from behind, they will not be needed at all.
There are cliffs on the east and west sides, and the mountains are protected by level three formations, so he doesn't need to worry about them at all.