The castles of Ji Qingshan and Zu Dahai were like two nails, nailed to the corridor of western Liaoning.

Although they were annoying, they were basically harmless, so Ning Yuan decided to let them exist for a while longer, and use them to paralyze the others by the way.

Before he set out on the expedition, he handed over the military power of the empire to Bai Ze, and instructed Bai Ze to do everything cheaply.

After the event that the Eagle Removal Alliance and the Orc Empire jointly attacked the Jinzhou region, the army of the Condor Empire entered the Liaohe Plain and occupied a large area of land.

At this time, the existence of the two nails of Ji Qingshan and Zu Dahai began to get in the way.

Because their existence has pulled the Great Condor City area under the cover of the clouds of war, it has seriously hindered the communication and communication between various parts of the Condor Empire.

After seeing this situation, Bai Ze decisively dispatched two legions, went to the two castles, and began to carry out the nail pulling operation.

Considering the unnecessary losses caused by the strong attack, Bai Ze adopted the method he had told Ning Yuan before - the earth attack.

It's a simple idea, but it's a bit time-consuming, but it's better to capture two castles at the least cost.

The so-called earth attack is to take sand from other places and pile it on the outside of the wall, and when the mound is as high as the wall, the height advantage of the wall is gone.

In order to pile up the mound in the shortest possible time, Bai Ze requisitioned a large number of strong laborers, each of whom was given a carrying basket, and used these strong laborers to constantly carry the sand dug up from other places under the two castles.

Because there is no moat outside the castle walls, the height of the mound there rises very quickly.

Although the Imperial City attracted a long stream of water as a moat, it only took two days for that river to be cut off by another river channel by the Baishi kelp people.

Seeing that the mounds of soil outside the city wall were piled up higher and higher, Ji Qingshan and Zu Dahai were at a loss.

Although they have tens of thousands of troops in the city, these troops are okay to defend the city, and if they take the initiative to go out, it is no different from sending them to death.

But this method used by the enemy is like boiling a frog in warm water, leaving them with no temper at all.

They also sent soldiers to shoot arrows from the city walls in an attempt to harass the enemy's construction progress, but before the soldiers could shoot a few arrows, they were overwhelmed by the elven marksmen on the enemy's siege arrow towers.

Although the height of fifty meters was very high, it could not stand Ning Yuan's side and had plenty of time to prepare all kinds of siege equipment.

Although Ning Yuan didn't plan to attack at all, he still let the engineering corps drive down a few tall siege arrow towers.

Because it was determined that Ji Qingshan and Zu Dahai would definitely not dare to send troops out of the city, Bai Ze simply asked people to fix the siege arrow tower fifty meters away from the city wall.

Elven marksmen are in teams of ten, day and night, facing the defenders on the city walls at a distance.

Under the cover of the elven marksman, the mound of earth outside the city wall grew higher and higher day by day, and two months later, two huge mountains of earth about fifty meters high rose from the ground.

After the earth mountain began to take shape, the defenders on the city wall did not dare to show their heads easily, because the elven marksmen stood on the top of the earth mountain and could easily snipe them.

It stands to reason that when the earth mountains are piled up to this scale, the army on the side of the Condor Empire can completely launch a siege on the city, and the defenders in the city will definitely not be able to withstand their attack.

However, the two legions under the city did not have the slightest intention of attacking the city, and they continued to extend the earth mountain forward.

Half a month later, the earth mountain and the city wall were completely connected, at this time, there was no need for siege equipment, and the army of the Condor Empire could directly climb the city wall from the earth mountain.

When Tushan was approaching the city wall, Ji Qingshan and Zu Dahai once organized a death squad to shoot at the enemy on the city wall, trying to prevent Tushan from moving closer to the city wall.

However, when the heavily armored elf marksman appeared, the so-called death squad was eventually defeated.

As a result, the two of them could only watch as the earth mountain and the city wall got closer and closer, and finally connected directly.

When the earth mountain and the city wall were connected, the army of the Condor Empire easily captured the city wall along the earth mountain, and the defenders of the city were forced to retreat to the inner city.

After capturing the city wall, the side of the Condor Empire immediately stopped the offensive, and they began to persuade Ji Qingshan and Zu Dahai to surrender.

Although Ji Qingshan and Zu Dahai had different positions, they invariably chose to fight to the death.

Facing the stubborn defenders in the city, Bai Ze did not become angry, but directly played the tactics of killing people.

He had trebuchets transported to the top of the dirt hill and kept throwing boulders into the city, while the elven marksman army would fire tens of thousands of rockets into the city every day.

Although the two castles were self-sufficient, they suffered a severe food crisis after the fall of the city walls.

Because the natural wonders of the city's food were located in the center of the castle, the people of the city had to brave the roaring boulders and cold arrows flying from all directions if they wanted to collect the food.

Gathering food for a good harvest was a very happy thing, but in these two castles, it has become the most feared thing every day, because the road of happiness has become the road of death.

But for the sake of food, the people in the city had to risk their lives to get out, even though they knew they might never return, because without food they would starve to death, so they had no choice.

Seeing that the relatives around him were gone and fewer, and the people in the city were becoming more and more dissatisfied with their lords, which brought great pressure to Ji Qingshan and Zu Dahai.

As time passed, the voices in the city advocating surrender became louder and louder, and in the end, some high-ranking generals in the army directly approached them and asked them to immediately come up with a solution to the crisis they were facing.

Seeing that his generals had also begun to separate from him, Zu Dahai knew that he had to take that step, otherwise he would probably not see the sun the next day.

Although he was very unwilling, it didn't seem too embarrassing to lose to Ning Yuan, after all, the gap in strength between the two sides was relatively large, and after losing the advantage of the city wall, it would be difficult for him to wrestle with the other party.

Thinking about it like this, Zu Dahai felt much better in his heart, plus he actually came to the game to have a good time, and he didn't have much ambition, so after figuring it out, he directly chose to surrender.

Zu Dahai is unrestrained and can freely choose whether to surrender or not, but Ji Qingshan can't, because he has already accepted the benefits of others, so he can only go one way to the dark.

In order to prevent his army from mutiny, he poisoned several army generals who forced him to the palace, wanting to firmly control the army in his own hands.

But unfortunately, this not only failed to help him completely control the army in the city, but also directly caused the army to mutiny.

After learning that his immediate boss was poisoned by the lord, the remaining generals were all in danger, and in the end, in order to save their lives, they directly led the army to attack the city lord's mansion.

Ji Qingshan's behavior completely lost the morale of the military, and in the end, even his personal guards turned against him.

So, under the cooperation of the inside and the outside, Ji Qingshan was cut off by the mutinous soldiers.

After killing Ji Qingshan, the remaining defenders in the city immediately chose to surrender, and at this point, the two nails nailed to the territory of the Condor Empire were all removed, and the entire Liaoxi Corridor completely became Ning Yuan's back garden.

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