Chapter 645

"Boom, boom, boom!"

The gunfire of the tsunami suddenly appeared, but the more than 20000 guns did not fire at the same time, but fired in stages at different positions. The firing time interval of different batches of guns was five seconds, and they were divided into five batches. The purpose of this is to prevent huge resonance and shake down the city wall.

Although the wall of Qinghu fortress is strong, the resonance produced by tens of thousands of guns firing at the same time may knock down the wall. Even if there is only one possibility, it should be prevented in advance.

Li Mu was so angry that the speed of the shells suddenly slowed down in his eyes. Then he saw the dense shells roaring towards the sky. The guns were dense, like heavy rain.

The first batch of artillery shot, the second batch of artillery shot, the third batch of artillery shot, the fourth batch of artillery shot, the fifth batch of artillery shot, and then it began again and again. When the fifth batch of artillery shot, the faint vibration began to appear. This was the first round of nearly 5000 heavy artillery shells that had just fallen.

On the large screen of the command center, everyone watched the flames rising one after another in the water demon army. Most of the heavy guns of Qinghu fortress were 155 mm self-propelled howitzers. The total killing diameter of this kind of artillery was more than 60 meters, and its maximum power could cover a basketball court.

A shell falling can produce a crater with a diameter of 10 meters on the ground. The fragments produced by the shell can kill all unprotected living forces in the whole football field. When each heavy gun falls, death is waving his sickle.

But this is only for human beings. For the demon family, the biggest threat that the shell can produce is to directly hit and explode. After that, the fragments it produces are almost impossible to kill other demon families. At most, they can only be slightly injured. In front of the demon family, the power of human scientific and technological weapons plummeted directly.

Although the power of heavy artillery has plummeted, the victory lies in the sufficient number. Nearly 5000 shells fall in each round, and the dense shells fall continuously, one round after another as if endless.

The whole city wall is constantly shaking. Even if the city wall is extremely strong for human beings, it also needs constant shaking to offset the impact caused by heavy artillery firing.

"Brain, investigate the water demon!"

Li Mu glanced at the distance. Nangong Mingyue raised her hands and covered her ears with panic. The water demon army hasn't appeared yet, but she has been shocked by the terrible fire defense of Qinghu fortress.

While everyone was attracted by the terrible gunfire, Li Mu quietly released a silver ball the size of a thumb. The ball flew out of the city wall, then sank quickly and flew in the direction of the water demon army.

Standing on the edge of the city wall, Li Mu looked down. He saw the fiery flames erupting one after another in the dense shooting mouth, and the dense shells flashed away.

The shooting opening on the wall of Qinghu fortress is very narrow. It is only one meter and five meters wide horizontally, but more than five meters high up and down, and gradually shrinks inward. Until near the heavy artillery, the horizontal width is only one meter, and the height up and down is only three meters, and the depth of the shooting opening is more than ten meters.

This design can prevent monsters from drilling in to the greatest extent, except for those small water monsters whose body width is less than one meter, but this water monster is easy to be destroyed instantly when climbing into the shooting port.

"There it is!"

Soon, the silver ball flew above the water demon army. The height of the silver ball was very high, even higher than the flight limit of the unmanned reconnaissance aircraft, but the picture it sent back was much clearer than that taken by the unmanned reconnaissance aircraft.

Li Mu's picture of the sea appeared. He saw that dense shells were falling continuously, harvesting the lives of the water demon army in pieces. Even if many artillery fire failed to hit directly, basically one or two thousand water demons could be directly destroyed in one round. The firepower of the artillery fire was full coverage. Both the ordinary water demons and the elite demon soldiers controlled by the four tyrants of Qinghu were in the ranks of being destroyed.

As long as it is hit by heavy artillery shells, even an elite demon soldier will be seriously injured if he does not die. Dense heavy artillery shells fall, and water demons fall in pieces. The biggest advantage of shells over rockets is that they seem endless.

Li Mu even saw several shells of heavy artillery directly drive down Ao Guang's Dragon.

"Hum, humble human!" Ao Guang just looked up and looked at the air. The shells flew directly and exploded in the air. Then Ao Guang carried the scaly dragon claws at will.

"Woo!"

The night fork beside him took a long breath and blew a huge horn. The horn sounded. Those giant turtles in the water demon army stopped fiercely and shook heavily. Then their tortoise shells flew up one by one. These tortoise shells flew into the air, and then they spun one by one to support huge shields in the sky.

Each of these giant turtles is more than twenty or thirty feet in size. When their tortoise shells are unfolded, they can even form a giant shield with a diameter of nearly 200 meters. One shield is formed in an instant. Thousands of such giant shields soon appeared in the sky.

"Boom, boom, boom!"

Thousands of huge shields appeared in the sky to block out the sun. The shells of heavy artillery were directly blocked by these shields. The shells hit the tortoise shell. The evil spirit on the tortoise shell was slightly dark, and then it was undamaged. A large number of shells were blocked by the tortoise shell shield and could not hit the water demon's head at all.

As soon as these tortoise shells and shields appeared, at least more than half of the shells were directly blocked, and the casualty speed of the water demon army immediately decreased rapidly.

A round of artillery attack can destroy thousands of water demons directly to less than 500 water demons. The killing efficiency of artillery coverage against water demons plummeted.

"The green lake water demon is also fully prepared for this war!" Li Mu looked at this scene. He was no stranger to similar pictures. When mankind and the demon country went to war, a situation similar to the operation of the group army often appeared. It was a real war, with sneak attacks, schemes, conspiracies and overt schemes. It was all useful for victory. So was mankind, and so was the demon family.

"Fill armor piercing shells, fill armor piercing shells immediately!" Li Mu looked dignified. Without hesitation, he grabbed the walkie talkie and ordered the artillery troops in his defense area.

Li Mu rushed directly into the city wall while ordering. Nangong Mingyue saw Li Mu get into the city wall, and she quickly followed up.

"Coward, the moon is really blind. She even likes this kind of waste!" Seeing this scene, Zhao Xin's eyes flickered with cold light and full of cold killing opportunities. He thought that Li Mu was frightened by the scene of the simultaneous firing of ten thousand guns and hid directly in the city wall.

"Come on, change armour piercing bullets. Change armour piercing bullets now!"

Li Mu rushed into the city wall and shouted orders directly to the artillery commander in the defense area of the city wall.

"Armor piercing bullets? Why change armour piercing bullets? After changing armor piercing bullets, if you can't directly hit the key points of the water demon's head, you can't kill the water demon at all! "

The artillery commander said with a puzzled face.

After the great change of heaven and earth, due to the change of war environment, some military scientists developed a new type of artillery shell. This shell is more narrow and long. There is a tungsten alloy armor piercing warhead in it, which is specially used to deal with monsters with strong evil spirit and thick crusts.

However, the shortcomings of this armor piercing bullet are also obvious. If you can't directly hit the monster's head, even if you can directly hit the trunk, even if you penetrate the monster's trunk, it's difficult to kill or seriously damage the monster. In terms of lethality, the single lethality of this armor piercing bullet is far less than that of a high explosive warhead.

After all, the vitality of monsters far exceeds that of humans. The human body and trunk are penetrated, and there is a great possibility of death. However, monsters are different. Even if they hit the trunk, they can live for a period of time. If they don't hit the key, it's irrelevant.

"The water demon has put up his defense. He needs to use armor piercing bullets to break the defense. Hurry up!" Li Mu looked serious and roared, "I'm the highest commander here. Listen to my orders, soldier!"

Now the time is too important. Every minute and second can't be delayed, because the artillery has a range. It has both the highest range and the lowest range. Once the water demon army comes under the wall, the threat of the Artillery Force will drop sharply.

It is compulsory to give full play to the maximum lethality of the Artillery Force without delaying any time.

"Yes, sir!" The artillery commander hesitated for a moment. The nature of soldiers prevailed. Since there was an order to let Li Mu be the temporary commander-in-chief of the defense area of this section of the city wall, he had to obey the order.

"Come on, everyone change armor piercing bullets, come on, come on!"

At the command, all the artillery troops defending the one kilometer city wall immediately took action. The artillery quickly opened a special large wooden box, which was full of slender shells, which were one-third thinner than ordinary shells, but almost twice as long.

However, the number of armor piercing shells is very small. Each heavy artillery is equipped with only ten armor piercing shells, which is only one fifth of the number of high explosive shells.

"Fire!"

Two thousand heavy guns were all equipped with armor piercing shells. Li Mu waved his hand and roared, and two thousand armor piercing shells roared out.

At the same time, in the headquarters of Qinghu fortress center, Nanye looked at the huge tortoise shell shield in the picture, and his face was very ugly. General Nanye had many dealings with Qinghu water demon, and had experienced many battles, but it was the first time for general Nanye to see such a huge tortoise shell shield like today.

It was the first time he saw him, and it was also the first time for other officers in the command center to see that heavy artillery shells were intercepted. Everyone felt very difficult and helpless.

"The killing efficiency of artillery troops has been reduced by half, sir. What should we do?"

An officer said nervously, if you can't kill the water demons as much as possible before they move forward, the pressure on the green lake fortress will be great when the water demon army comes under the green lake fortress.

"Continue to gather fire and destroy those tortoise shells and shields as soon as possible!" Nanye said solemnly.

"Sir, look!"

At this time, a staff officer suddenly exclaimed.