The R&D Centre was successfully opened...... The base has entered an upgraded state...... Estimated time it will take to upgrade...... 24-hour ...... The upgrade begins......

"Still need to upgrade? 24 hours? Han Dao, who was in the midst of excitement, seemed to have been splashed with a basin of cold water, instantly sobered up, and hurriedly asked. Pen & Fun & Pavilion www.biquge.info

“…………”

His question went unanswered, and the brain seemed to have gone into a state of dormancy, and even the entire base space was closed again.

“***！” Ten minutes later, Han Dao scolded fiercely, he was sure that within 24 hours, the base really couldn't be activated.

"24 hours a day...... Will these monsters be able to endure until that time and then attack? Han Dao smiled bitterly, without the protection of the base, he was just an ordinary evolutionary, if the demon beast chose to attack at this time, then it would be fucked.

"Enemy Attack !!"

It seemed to confirm Han Dao's worries, a sharp sound suddenly resounded over the city wall, Han Dao was startled, and looked up sharply, in the distance, hundreds of flares were hit in the sky, and the entire earth was instantly illuminated, and it could be clearly seen that Dao Dao water waves had swept from the sky.

"These grandchildren! Dare to come and find death! Liu Xiong casually picked up his special Gatling gun, looked at the water waves in the distance, and sneered.

"I'm afraid it's not that simple...... Han Dao's face was solemn, this time the demon beast that came back was not at the same level as the previous one, after the detection of the giant squid, he was very clear about the terrifying effect of those purple rains.

The speed of the water waves was extremely fast, but in the blink of an eye, it was already close to the city wall, and there were countless black shadows at the bottom of the water, coming with the current.

"Shelling!" The voice of the major general's command was heard.

"Put!"

With the sound of the standard-bearer, thousands of fires suddenly rose into the air, and the next moment, thousands of kilometers away were instantly overwhelmed by artillery fire.

"Put!"

"Put!"

"Boom, boom, boom!!"

With the intense artillery bombardment in turn, the demon beast army seemed to suffer heavy losses as before! However, the expressions on the faces of most of the people on the city walls became more and more solemn.

In the smoke in the sky, many surviving demon beasts rushed out at this moment, rushing over with red eyes.

"Prepare for battle!"

“***！” Liu Xiong's eyes were like brass bells, and a foul word came out of his mouth, as he found that these demon beasts had not only managed to break through the area covered by artillery fire, but had also become more powerful.

Under the city wall, the height of the water began to rise rapidly, and a huge black shadow suddenly rushed out of the water, jumped high, and suddenly shook its ugly head, and immediately several soldiers screamed and were swallowed by this demon beast.

"Da Da Da!"

The sound of all kinds of firearms suddenly resounded throughout the city wall, and with the behavior of the first demon beast, more demon beasts began to jump out of the water, with dense bullets, wantonly hunting human soldiers, and in just a few minutes, nearly a hundred soldiers died in the belly of the fish.

"Kill! Kill! Kill! Kill all you brutes! Liu Xiong was already red-eyed, and the Gatling in his hand continued to spray tongues of fire, and countless bullets were fired into the river below.

And around it, the others are no better, everyone is in a state of madness, there are still many human stumps left on the city walls, there is a strong smell of blood everywhere, and human soldiers are dying every moment.

The comrades-in-arms who were still fighting side by side just now, in the next moment, they were already torn apart by the monster beast that suddenly jumped up in front of them, and swallowed into their stomachs, everyone was under huge psychological pressure in their hearts, and no one knew if they would be swallowed by a demon beast that suddenly appeared in the next moment.

Behind Liu Xiong, Han Dao's whole body was in a state of high tension at the moment, and Dao Dao sword light surrounded his body.

"Roar!"

An ugly head suddenly rushed out from under the city wall, only ten meters away from Han Dao, and its blood-red eyes instantly locked on a soldier who was firing desperately, and his terrifying mouth was about to swallow it.

"Yuan Infant Realm Demon Beast!" On the city wall, the soldier who was locked by it was already stunned in place, not because he was timid, but because the strength of this demon beast was too much beyond him, and at this moment, just under the suppression of the qi machine, it made it stiff and unable to move.

The other soldiers next to him were also attacking this demon beast with all their strength at the moment, but all the bullets fell on its body, and the next moment they were bounced off by its hard scale armor, which had no effect at all.

And such a scene occurs in almost every part of the city wall, once it is close to the demon beast, whether it is an ordinary soldier or an evolutionary, they can only die helplessly.

What's even more terrifying is that the Yuanying Realm is no longer the highest level of demon beasts, and there are even distractions and demon beasts in the Tribulation Realm that are infested everywhere, and Han Dao saw with his own eyes that the patrol leader and his entire team who patted themselves on the shoulder before encountered an extremely terrifying huge demon beast, but they were wiped out in an instant, and the entire team was devoured and turned into minced meat in the mouth of that demon beast.

The screams kept ringing out, the smell of blood on the city wall became heavier and heavier, and the soldiers who could fight became fewer and fewer, Han Dao even felt that the ground under his feet was trembling violently, it was a terrifying demon beast that was hitting the city wall underwater in an attempt to completely destroy this barrier.

An uneasy mood suddenly rose in Han Dao's heart, in front of him, although Liu Xiong's vitality was still violent, but after all, the firearm could not be used indefinitely, and the long-term uninterrupted shooting had caused the entire barrel to burn red, if it was fighting, I am afraid that the ammunition would be scrapped before the machine gun was exhausted.

And once the machine gun in his hand is dumbfounded, the two of them may be swallowed by the jumping demon beast at any time, and he has just observed the situation in the rear, more than half of the troops on the city wall have been killed and wounded, but there are no reinforcements in the rear.

"It's been abandoned here!"

This was the only guess in his mind, and his intuition told him that in the face of such a fierce attack by the demon beasts, there was an eighty percent chance that the high-level leaders of the God of War Base would directly abandon this line of defense, and it should be that even if they sent reinforcements, they would only increase the casualties.

And if he is the supreme commander of the God of War base, in the face of such a situation, he will only choose to give up, but this abandonment is not a real abandonment, it is very likely to be an alternative counterattack, and when the defense line is crumbling, he will directly use destructive weapons to completely destroy here, of course, including the enemy here.

Nobita...... Stop fighting, vitality cover, let's get ready to retreat! Han Dao shouted loudly.

"Retreat?!" A hint of hesitation flashed across Liu Xiong's face.

"The attack of the demon beasts is too fierce, even if we stay, we can't stop anything? Rather than die in vain, it's better to leave your life and wait until the future to fight these beasts! Han Dao didn't explain his guess to Liu Xiong, he didn't have time to convince Liu Xiong of this.

"I ...... I...... I listen to you! Liu Xiong's face changed several times, and finally chose to follow Han Dao's advice.

"Let's go!" Seeing that the other party agreed, Han Dao was overjoyed, and then motioned for the other party to start retreating, he was now more urgent than anyone else to leave here, because his main task at present was to survive 24 hours and wait for the base to be successfully upgraded.