Suppressed by the longbowmen, the evil spirits seemed to go even more frantic and accelerated towards the fortress.

The Lord of Gacheng did not change his face, and shouted calmly: "Storm ready!"

Storm? Lin Tian wondered in his heart, could it be a large-scale lethal Dao technique, but soon, this doubt disappeared.

There was a "click" sound on the city wall, and a dense sound of machines was heard, and then the lids on the edge of the city wall were opened, and machines were raised.

The appearance of the machine looks very simple, with a base, a square box on the base, and the outside of the box has neatly arranged round holes.

With a click, a sharp thing suddenly appeared in each round hole, and Lin Tianding looked at it, but it was a sharp arrow! All the arrows were pointing diagonally downward, pointing out of the city wall.

"Release!" the Lord of Gacheng commanded, and with a loud buzz, all the boxes shot crossbow arrows at the same time, and the dense arrows, like a storm, poured down into the canyon.

This round of arrow rain was even more intensive, almost obscuring the space in front of the fortress, and Lin Tian finally knew why it was called "Storm", not Dao Technique, but a dense arrow rain.

These arrows are also made of unknown materials, and they can cause damage to evil spirits, which fall in waves like wheat harvesting.

Lin Tian turned on the super perspective and looked through the base of the ballista, and found that there were complex mechanisms in the base, which methodically sent the crossbow arrows up and reloaded, just like modern automatic artillery.

After a few *** wind and rain", the front of the fortress was full of arrows, and the fallen evil spirits were also stacked on top of each other, which was shocking. The only difference is that there is no blood coming out after the evil spirit is injured, otherwise it would have been bleeding before the game.

But even so, there were still a small number of evil spirits that rushed through the rain of arrows and survived. The surviving spirits all share a common trait, a dark red liquid that erupts from their mouths.

The evil spirit sprayed the liquid on the arrows on its body, and as soon as the arrows touched the liquid, white smoke rose and soon corroded.

"It turns out that the corrosive weapons that the guards are talking about are like this. Mu Yun frowned deeply.

She knew very well that the weapons of the fortress Yin soldiers were specially made, which could effectively kill evil spirits and other underworld creatures, just like the soul chain of the soul seducer, which could trap the soul, and each underworld weapon had its specific effect.

But it is such a special weapon, which is corrupted by the "saliva" of evil spirits.

"You're right, that's why we're planning to reforge a new batch of weapons. Lord Jiacheng said solemnly.

Lin Tian heard the worry in his words, if the new weapon could not be made in time, and the armory was depleted, it would not be able to contain the attack of the evil spirits.

After the remaining evil spirits corroded the arrows on their bodies, their eyes were red, and they continued to rush towards the fortress, and the evil spirits that rushed to the front suddenly spewed out a dark red liquid and sprayed it on the city wall.

As soon as the city wall came into contact with the liquid, it made a "sizzling" sound and bubbled, and in the blink of an eye, a small piece of the city wall was corroded.

"Even the city wall can be corroded!" Zhang Lingyu was taken aback, to be honest, even Lin Tian frowned, it can corrode the city wall, which means that the fortress may be corroded entirely, if there are enough such evil spirits, it is not impossible to do so.

It was certainly not the first time that the city lord had noticed this situation, but his face was still not very good, he made a gesture behind him, and there was a loud noise under the city wall, and the city gate slowly opened.

The evil spirits found the gates open, and in an instant they all rushed towards them.

"Roar!"

Suddenly the roar of the Yin soldiers sounded in the fortress, followed by the dense sound of horses' hooves, and the sound of horses' hooves became louder and louder, connecting together, and the walls seemed to tremble.

Lin Tian, Xiao Manxuan and Zhang Lingyu seemed to think of something, and they all looked outside the city wall, just as a black torrent of steel rushed out of the city gate, aiming at the evil spirit.

It was the cavalry regiment of the fortress, and at the head of the cavalry regiment was Heshan! In the cavalry regiment, each cavalry was equipped with a light shield, a one-handed sword, and a spear. As soon as the cavalry regiment rushed out of the city gates, it spread out its array and charged at the evil spirits.

The cavalry group charged violently and magnificently, and if there were thinking and conscious people on the opposite side, they would definitely be psychologically suppressed, or even flee in the wilderness.

But the evil spirit only has instinct, and does not know what fear is, and in the face of the cavalry regiment, the evil spirit will not retreat. Instead, the evil spirits once again spewed out dark red liquids, which were corrosive.

He Shan was at the front of the cavalry regiment and bore the brunt of the attack, but he made a gesture to the back in a hurry, and the array suddenly dispersed, and the cavalry ranks opened up a distance between them, and at the same time, the cavalry raised their shields.

The dark red liquid pounced, and the cavalry used their shields to resist, and as soon as the shield touched the liquid, it also began to dissolve. The liquid that leaked through the net was sprinkled on the armor of the Yin soldier, and small pits appeared in the armor.

The forward He Shan didn't use a shield, he just waved his spear, and a black gas appeared, shaking all the liquid in front of him back.

After the liquid jet ended, all the cavalry lost their shields and resumed their charging formation again, while the forward array had already rushed in front of the evil spirits.

The evil spirit took the lead in pounced, and He Shan's first array stabbed out the spear in unison, piercing the evil spirit with one spear, and at the same time, the cavalry behind accelerated and rushed up, waved a one-handed knife, and slashed at the evil spirit's neck, and the evil spirit was immediately separated.

This cooperation made Lin Tian's eyes shine, he had seen the extraordinaryness of this cavalry regiment in the training ground before, and he didn't expect the combat power to be so strong.

Individual cavalry may not be strong, but once assembled, they are a whole, a master. The cavalry charged quickly, and in a short time, all the remaining evil spirits were wiped out.

"Heshan, Heshan!" all the Yin soldiers on the city wall cheered, and the war drums also sounded, celebrating the victory of this battle.

It was indeed a complete victory, without a single battle loss, but the Lord of Jiacheng had a calm expression, as if he had become accustomed to it. However, Lin Tian knew that such an achievement was obtained from countless previous trainings and the sacrifices of many Yin soldiers.

After fighting many times, there will be this effective method, and before this set of combat methods is formed, there must be a lot of Yin soldiers sacrificed.

"These people, every time they invade, they lose a batch of equipment, and if this continues, we can only be stoned. The Lord of Gacheng looked at the corroded arrows, shields, and heavy armor of the cavalry outside, and his mood became a little irritable.

"Mingjin withdraws his troops. The Lord of Gacheng waved his hand in annoyance and gave an order.

Dangdangdang......

The sound of gold sounded, and He Shan, who was outside the fortress, received an order to command the cavalry regiment and was about to retreat, even if it was victorious, the retreat was not scattered in a hurry, but in an orderly manner.

Suddenly, the canyon shook, and gravel fell on both sides as if it had been an earthquake, and then a shrill whistling sound could be heard in the distance.

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