At this time, up and down the city wall, the army of ghosts was almost lost.

Xu Shu waved his fist heavily, and was about to shout in pleasure, but he caught a glimpse of Huang Zhongmian's cold expression, and was about to ask a question, Huang Zhongmian stretched out two fingers and said: "The stock in the ammunition depot is only enough for two salvos, and if you want to replenish it, you will have to wait until at least three days later."

As for the momentum shown by the army of the Immortal Monsters today, I'm just afraid that I won't be able to pass this level today. ”

Xu Shu said in a deep voice: "How did you repel the attack of the Immortal Monster in the past, why can't you catch the medicine according to the prescription today?" Will Huang be too worried? ”

Huang Zhongmian pointed forward, and not far away, the ghost monster swept up again.

Xu was hit by the saturation attack of the cannon and the oil saturation, and this time the demon no longer played the routine, and directly swept the waves, surging towards the city wall.

Rushing to a hundred meters away, the Immortal Monster suddenly folded into a high wall.

Xu Shu was inexplicably surprised, Huang Zhongmian was already colorless, and sighed: "It's time to come, it's still here." ”

Xu Shu hurriedly asked.

Huang Zhongmian said, "Do you know how far away the entrance to the underworld is from here?" ”

Xu Shu shook his head blankly.

"More than thirty miles."

Huang Zhongmian said, "At the beginning, we were able to guard the entrance to the underworld and prevent the Immortal Monsters from breaking in. Later, we lifted the blockade and killed the Immortal Monsters instead. Later, the Immortal Monster got out of the Source Fort. ”

"Source Castle?"

Xu Shu was puzzled.

"A fortress made of brown slates, made of materials brought from the underworld by the Immortal.

Once the Source Fort is built, it will become a strong stronghold for the Spirits.

They are relying on the existence of these source forts, step by step, and encroach forward.

Since the construction of the defensive wall, the Immortal Monster has launched several attacks, but none of them have built the Source Fort.

I thought they were retreating in the face of difficulties, but I didn't expect that they were still thieves. ”

As Huang Zhongmian spoke, the artillery roared again, and then the stone thrower threw out the oil again.

With a bang, the city gate opened, Xu Shu rushed out of the door with an arrow step, came to the side of the tower, and looked down.

Hundreds of soldiers marched forward, carrying a yellow explosive bag on their chests and behind their backs.

"Dead man!"

Xu Shu's eyes widened.

"They are all felons selected from all over the country, promising them heavy profits for their families and buying their lives."

Huang Zhongmian walked from behind and said quietly.

Xu Shu was dumbfounded: "Even if it is a dead soldier, I am afraid that I can't help it." ”

As soon as his words fell, the fire oil overflowed like living water, and the raging fireworks were also swimming, protecting the dead to the death.

In addition, the roar of cannons and the eruption of cannonballs opened the way for the dead soldiers of Meattan with unparalleled precision.

Armed with artillery and fire, the dead men charged by Butan soon reached the edge of the high wall of the Spirits.

In an instant, one by one, the dead men sounded the fuse and rushed towards the wall of the underworld without hesitation.

Boom, boom......

Huge explosions came and went, and compared to the fluctuating landing points of the shells, the damage caused by the precise strikes of the dead soldiers was undoubtedly amazing.

Countless corpses of the Spirits flew into the air with severed limbs, and the walls of the Spirits that had been erected collapsed in an instant, and immediately after, a huge blue-black and broken building was revealed.

It covers an area of half an acre, one zhang to be high, and presents a zigzag structure.

"This, this is the Source Fort?"

Xu Shu exclaimed.

Huang Zhongmian nodded and said, "These blue-black stone slabs that built the Source Fort were brought in from the underworld, and they are extremely difficult to damage. The huge explosion of the right time obviously affected these stone slabs, but it could only be blown apart, but not destroyed.

Based on past experience, it is almost impossible to destroy the Source Fort unless it hits the core of the Source Fort.

And the source fort is surrounded by high-level ghosts, even if there are really cannonballs that will hit the source fort.

These high-level spirits even did not hesitate to be buried with their bodies, but they also had to protect the Source Castle.

Let's put it this way, ever since I knew about this thing in Fort Source.

Except for the use of saturation attacks, one Source Fort has been destroyed, and no second Source Fort has been destroyed. ”

Xu Shu's face turned blue: "You mean that the Source Fort is a stronghold, and once it is established, it will be difficult to uproot."

Take the source fort in front of you as an example, it is so close to the city wall, once this source fort is established, won't it be to face the endless attacks of the ghosts? ”

Huang Zhongmian nodded silently.

Xu Shu said: "In the past, how did you repel the attack of the Immortal Monster, and you couldn't catch the medicine according to the prescription?" ”

Huang Zhongmian said: "I'm afraid it's really not good, since the city wall was built, all the offensive and defensive battles have been hard battles. You have to be triggered by the Demon Searching Divine Sound Forbidden Array in order to completely repel the Immortal Monster. ”

Xu Shu's heart was awe-inspiring.

He knew that the Demon Searching God Sound Forbidden Array.

This is an evil forbidden formation.

In order to stimulate the Demon Searching Divine Sound Forbidden Array, you need to have as little as thousands or as many as 10,000 blood sacrifices.

This is a battlefield, and there is no one next to it, except for many corpses.

It is very appropriate to set up a large array of demon searching gods here.

"Speaking of which, it's still a boil, then boil."

Xu Shu was not as pessimistic as Huang Zhongmian, until half an hour later, pessimism swept his soul like a river against the current.

He was surprised to find that after the Source Fort was built, it wouldn't be long before the injured spirits could return to the Source Fort and run out alive.

From this point of view, the source castle is a large amplifier of the strength of the Immortal Monster.

Soon, critical conditions began to arise at several of the city wall entrances.

There was no need for Huang Zhongmian to greet him, Xu Shuxian couldn't sit still.

He hurried to the second floor and issued a military order to the people in the secret service to rush to help.

Manchu Secret Service, only he is a new ding, Tu Li, Kong Qingyang and the like, they are simply old oilers.

Xu Shu's military order, in their opinion, is a toothache curse, and it is too much.

In an instant, more than 100 soldiers of the secret service were divided into six teams, except for one team that was left by Xu Shu as a reserve, the rest of the forces were all scattered by Xu Shu.

The existence of the battle tower is designed to cope with similar crisis situations, and its ropeway design has been improved many times after repeated practice, and as of today, the operation has been extremely proficient.

The various ropeways lead to the various city wall passes, and the movement is extremely fast.

Xu Shu did not forget his promise to the people of the secret service when he lectured, and after arranging the reserves, he killed the head of the city wall as soon as possible.

At the head of the city wall where Xu Shu went, five ghost monsters had already jumped on, each of them was sturdy and fierce.

They were also extremely fast and constantly moving, causing the soldiers' muskets to turn into burning sticks.

The five spirits stirred up the city, and the defensive formation on the city wall was suddenly chaotic.

Three zhang away, Xu Shu jumped up in the air, slashed out with the dragon sword, and with a brush, the heads of the two ghosts flew out of the air.

In the next moment, like a raging wind, he swept towards the remaining three spirits.

In a few moments, the three monsters were killed by him on the spot.

Xu Shu didn't have time to catch his breath, took out the heavy machine gun, and pulled the trigger under the city wall.

He has superb marksmanship, a heavy machine gun in his palm, and a dense strafing fire, but he also has the style of point shooting.

In a few moments, the section of the city wall he supported immediately stabilized the situation.

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