Even with the joint efforts of seventy or eighty earth and fire power users, it took nearly two hours to complete the earth wall maze planned by the military.
It was almost noon by this time.
Qin Kedi immediately arranged for everyone to have lunch in advance.
After another half-hour break after lunch, a full-scale attack on the zombies in Hongyuan County was launched immediately.
'Boom' 'Boom'...
The small and medium-sized howitzers at the rear opened fire. Countless artillery shells of different calibers followed the predetermined trajectories, slammed into the corpses in the center of the city, and exploded.
Amidst the smoke, pieces of broken limbs were rising up one after another.
The huge group of corpses burst into flames in response and immediately rushed towards the east where the sound of cannons was heard.
Scattered zombies in other parts of the city immediately made the same move.
The military artillery appropriately raised the shooting angle so that the projectiles would hit the corpses and cause maximum damage to the corpses.
When the guided corpses rushed out of the city and were exposed to people's sight, the howitzers stopped shooting because they had no shooting angle.
"Open fire with tanks, guns and mortars." Qin Kedi issued an order.
Immediately there was another boom of artillery on the position.
But the zombies are not afraid of death. Even if they fall in pieces, they still push forward unswervingly.
"Heavy machine gun fire."
When the group of corpses approached a distance of 700 to 800 meters, the heavy machine guns began to roar.
But this still cannot completely stop the corpse swarm.
When the corpse group approached the earth wall maze two or three hundred meters, a larger number of rifles began to speak.
However, although there are many rifles, they are far less powerful than mortars and heavy machine guns. They cannot effectively kill zombies at all and can only slightly slow down the speed of the zombies.
Soon, the leading corpse group came into contact with the solid earth wall.
"The rifles stopped firing. Heavy machine guns and mortars were raised to high platforms to continue suppressing the groups of corpses in the distance. Tanks and guns continued to fire. Foreign aid teams please enter the earth wall grid now to stop the zombies in their respective mission areas. The military will use artillery fire to stop them as much as possible. The follow-up force of the stagnant zombies will come up." Qin Kedi ordered.
While the five major civilian forces lamented the powerful interception and killing power of military artillery fire on the zombies, they marched to the areas responsible for their forces in an orderly manner, preparing to engage in close combat with the zombies.
The military's melee forces were placed in the middle of the maze of earth walls, while the civilian forces negotiated a protective area on their own.
There wasn't much of a dispute. The closer the protective area is to the middle, the greater the pressure, but correspondingly more zombies will be killed and more crystal cores will be harvested.
Yunling City and Iron Sword Martial Arts Hall were considered the strongest by default, so they were on the left and right sides of the military, bearing the greatest pressure outside the military.
Under the interception of the most powerful combination of forces in Yunhai City, although the corpse groups broke into the earth wall maze one after another, they were attacked head-on by humans inside.
As time passed, more than ten minutes passed, and the corpse group advanced less than twenty meters in the maze.
The depth of the maze is a full one hundred meters. Outside the maze are tanks and heavy machine gun shooting stations.
The situation seems to be relatively optimistic.
However, both the military forces and the civilian forces vaguely felt that something was wrong.
Because many ordinary zombies in today's zombie group have reached level two, their ability to withstand beatings has been greatly increased. As long as they are not directly hit by military artillery fire, most of them will be injured but not killed.
Their ability to move has only weakened, but they have not stopped moving forward.
Slowly, more and more disabled zombies are advancing into the maze, and the pressure on all combat forces is increasing.
The leaders gradually felt uneasy in their hearts. They have discovered that so far, not a single zombie with supernatural powers has appeared among the corpses.
Among them, Zhao Xuan's uneasiness was the strongest.
"I didn't expect that the situation here would be so weird. Not only are there the two difficult monsters that Doudou reminded me of, but the zombies on the surface are also so powerful. I must make preparations earlier to prevent the team from suffering losses." Zhao Xuan thought in his mind Start thinking.
He immediately asked Doudou to jump off Heiyun's back and feed Heiyun the newly harvested secondary energy crystal nuclei one by one.
Heiyun was already facing the threshold of being promoted to level three. Previously, because there were not enough secondary crystal nuclei and the primary crystal nuclei were almost useless, it could only use time to simmer.
Now as the secondary crystal nuclei are taken down, the energy fluctuations on Heiyun's body appear with clear and perceptible amplitude.
After swallowing forty secondary crystal nuclei in a row, Heiyun stopped swallowing.
It retreated to the center of Yunling City's power, lay down on the ground and closed its eyes under the protection of many people.
Everyone was fighting nervously while paying attention to the movement of the black cloud.
More than ten minutes later, the energy in Heiyun suddenly surged. Its body also suddenly grew by nearly half.
The next moment, the energy suddenly shrank again, and the body suddenly shrank back to its original appearance, even smaller than before.
Black Cloud has been upgraded, from level two to level three.
Zhao Xuan felt that Heiyun's physique and energy intensity were slightly stronger than him, and a relieved smile suddenly appeared on his face.
He can then not worry about Doudou's safety when the situation changes.
Heiyun stood up from the ground, shook his body, came to Zhao Xuan, and kissed Zhao Xuan and Doudou affectionately with his big head.
Doudou smiled happily and jumped onto the back of the black cloud.
The energy fluctuations of Heiyun's promotion attracted the attention of others. No matter which force the leader was, they all looked at Zhao Xuan's team with envy and jealousy.
Although they also received a certain amount of secondary energy crystal cores, they could not learn Heiyun's method of advancing in battle. After all, the advancement of mutant creatures was different from the advancement of humans. Mutated creatures only need to accumulate enough energy to advance smoothly, and then awaken more innate fighting methods, but humans need to digest and understand them carefully, and they will not immediately have new attack methods after advancing.
You need to have the corresponding jade slips to learn and then become proficient.
At this time, Yan Chengfeng felt particularly uncomfortable.
He had been stuck at the level two to three level, unable to make any progress, but now he was led by a beast from Zhao Xuan's team.
Although Yan Chengfeng was not afraid of Heiyun who had reached level three, he could clearly feel Heiyun's powerful combat power. If Zhao Xuan and Hei Yun join forces to deal with him, he will definitely be disgraced.
"After things here are over, I have to stay in seclusion for a few days to strive for promotion. Otherwise, it will be easy to be suppressed by Yunling City." Yan Chengfeng thought while fighting.
After Heiyun advanced, everyone fought steadily for a few more minutes, but the situation suddenly changed dramatically.
The huge group of corpses suddenly increased their impact as if they had taken Viagra.
At this time, the military's ammunition reserves dropped significantly and its firepower began to weaken.
With each increase and decrease, the speed of the corpse group breaking through the earth wall maze greatly increased.
