The Republic of Dawn has reached a strategic partnership with the newly rising underground alliance of the underground world, and the human beings living on the surface know that the country is composed of an individual, and the national strategy can only achieve the greatest effect if it is open and clear, and the cooperation between countries should ultimately be economic cooperation. However, it is very inefficient to do business between the national government and the national government, the state is governed by rules, and only a profit-seeking businessman can bother to bother.

So strategic cooperation is not what the conspirators imagined the leaders of the two countries to make a secret agreement or something? Instead, the rules of economic cooperation between the two countries are directly formulated, and then the industries and businesses under the two countries exchange with each other according to the needs of their own ears.

Under the official media of the Republic of Dawn, the war of the Underground World Underground Alliance is a just war for the cavemen to fight for their independent right to live, and the flame of revolution will surely sweep away the evil plough that has permeated the underground world for millions of years.

In this way, the underground alliance with a large mining economy in hand exchanged the minerals for the currency of the Dawn Republic here in the Dawn Republic, and then the underground alliance with money in hand carried out the procurement of various production enterprises in the surface world. In this way, a large amount of industrial support food materials flowed into the underground world, and the industrial sector of the entire surface world began to prosper when raw materials fell sharply. No one will be in front of money, and the disgusting buyer is an alien race in the underground world. As for the war taking place in the underworld, the Republic of Dawn did not send a single soldier into the underworld, so no one was worried about the unity of the Republic of Dawn and the evil underworld. At this time, a person with a moral cleanliness habit who completely denies the underground world is estimated to have just spoken, and he is regarded as having a low IQ balance.

As for how to compete for the orders of the rich people of the underground world, this is in the spirit of serving the employer. The profit-seeking nature of capital can be seen here, although the Republic of Dawn did not send a single soldier to the underground world, but humans can still be seen in the battle line of the underground alliance. These are not proletarian fighters with an expansive internationalist spirit, but adventurers of this age.

Lunt took a deep breath of the oxygen from the oxygen mask, this young man from the surface world, if he wanted to give a comment to the underground world, it was simply terrible. The humidity is high, and the temperature is as high as more than 30 degrees. You can't wear very neat clothes in the Underworld. If the clothes are very neat, they will be wet and wet for a while, so women in the underworld are probably the sexiest clothes in the world, absolutely bikini-style dressing. As for men, it is estimated that they have a layer of cloth around their waists.

It is said that although the underground world is hot and humid air, the last two years have been particularly humid, and as for the reason, the Dawn Republic will never admit that the summer project on the west side of the continent has a significant impact on the climate of the entire underground world.

Lunt gasped, as a man who claimed to be a family of adventurers, Lunt could only say that the ancient bards sang that the mysterious dungeons were full of gold, and they were not places to be led by people at all. Long calls himself a family of adventurers, about fifty years ago, before the Dawn Republic was founded, the adventurers of this world were armed with knives, guns and various weapons, and went to the dangerous jungle to obtain the crystal nucleus of Warcraft, as well as a variety of precious materials, and obtained finances from the group of magicians who had a large amount of gold coins.

This profession has disappeared since the Republic of Dawn leveled the vast swaths of the surface world where demonic beasts gathered, providing a lot of stable jobs for ordinary people. But what about now? Lunt is hired by his boss to go to the underground world to develop his business.

No matter how high-end the technology applied to any product is, if it is not designed according to the actual situation, there will always be problems, such as using the highest-end carbon fiber to make a wok, which is ridiculous. The environment of the underground world is completely different from the surface world, so it must be the underground world where people arrive, observe the application of products, and then collect data to make better products. As for why the companies of the surface world are so active in solving the problem? Of course, because of the order, due to the demand for products in the underground world, the companies in the surface world have almost broken their heads and promoted their products to the underground world.

As for the underworld? Lunt took another breath of oxygen from the oxygen mask, and it can be said that the brutality of war in the underworld has reached a level unimaginable to the people of the surface world. After a huge flash of light blasted in front of him, the dwarf cavemen beside Long carefully observed the battlefield with their periscopes, and in the space of the battle that was now contained in the huge underground cavity, all the vegetation had been flattened, and all kinds of fine sand and damp water vapor were mixed underground. However, in this humid space, oxygen becomes precious.

After observing, the soldiers of the Underground Alliance set up thick thin-walled cannon barrels in the tunnels. The halfling stuffed the shells of the gas canisters into the barrels. A series of loud bangs, a huge and heavy explosion sound, violently reverberated in the narrow underground space no more than a few hundred meters high. Violently one after another, the shock wave sent out swept around with countless rubble, and a large amount of rubble spread straight out from the center on the entire ground, forming a form of radiation outward from the center. That is, all the stone fragments of the ground directly below the explosion were shaken into powder by the shock wave, forming a bowl-shaped depression. Then the larger stones, pushed by the shock wave, brought slender notches on the ground.

Under such an explosive force, there were no living creatures within a two-hundred-meter radius of a bomb, and although Lunt had plugged his ears, he still felt like he had suffered a heavy fist in his head under the loud noise.

However, at this time, one by one, the soldiers of the underground alliance, wearing oxygen masks, under the guidance of armored machinery, charged towards the ground, and the sound of fierce bullet fire filled the battlefield. The effect of a massive air-fueled bomb scrubbing the ground in the underground is to greatly consume the oxygen of the underground world. The environment of the entire battlefield has become extremely harsh, but it also provides a guarantee for the victory of the underground alliance, in the safe observation area, Longt saw that the caveman soldiers with repeating guns against the climbing underground soldiers, these underground soldiers, Longt has seen in the laboratory, powerful muscles can bend the steel cage the thickness of a man's forearm, crawling on the surface extremely fast. There is a fight with the speed of the crocodile lurking underwater and suddenly attacking.

Seeing that the underground world is a creature with fangs, Lunt fully feels the correctness of the Dawn Republic's support for the underground alliance, and it is bloodthirsty to wake up from dormancy, and these creatures killed for the sake of killing will rush to the surface. It's nothing short of a catastrophe for the surface world. On the contrary, the Underground Alliance, a race that yearns for a good life, can still deal with. This war must take place in the underworld.

Of course, now these fierce soldiers are not alive in the surface laboratory, but are stupidly waving their claws after being covered by sparkling bullets, and their sharp claws are frequently missed by the rolling and dodging of the underground alliance soldiers.

In strong muscles, if there is not enough oxygen, it is anaerobic respiration when exercising, and a large amount of lactic acid will appear in the muscles. The muscles will become sore. The current performance of these soldiers is a sign of hypoxia. A large number of air bombs exploded in this confined space, which had already depleted the oxygen to a low value. The areas occupied by the Underground Alliance now have above-ground shafts to ventilate the underworld. However, now this underground space is confined to the ground.

The mighty Underground Warriors are now fighting the Allies' troglodyte soldiers in this confined environment. As a result, these races, which are naturally suitable for fighting, are now miserable. Patches crawled out of the area, but they couldn't fiercely assault the firepower network.

The sonorous battle mech, the spinning machine gun, sprayed bullets around, and a group of underground soldiers crawled out of the darkness, and the rotating machine gun towers of several battle mechs swept there, and the steel cone feet were stuck in the corpse of an underground demon, stuck in the rock under the corpse. The entire mecha was firmly on this position. All the heights of the entire position were controlled by the firing points of the underground alliance.

This subterranean area has largely changed hands. The legions of the alliance once again tightened the siege network, this space that was taken is only a part of the underground network, and above it is the space entrenched by the demons, but now the space where the demons are entrenched, and the underground cavity world in all directions has fallen into the hands of the alliance. In this way, the empty underground space was squeezed by one positional battle after another, and the end of the demon lords of the southern underground world of the entire continent was coming.

As for Longt, he is calculating how the performance of the air bomb will change with the degree of oxygen index consumption. Lund wrote down these parameters and reported them to the munitions production department above. Arms manufacturers will modify according to these parameters. Of course, Lunt did not just work for the military-industrial complex, the oxygen masks of the alliance of the underworld were used in battle. So in terms of the details of use, Longt is collecting feedback from the underground soldiers. This information will be provided to the manufacturer who employs Lunte.

Now the underground space where the battle is really going on has been filled with dead bodies, and the two sides are fighting fiercely. It is a contest of firepower and muscle, but as long as the soldiers of the underground alliance hold the node with firepower, as time stretches, a large number of soldiers will greatly reduce their combat effectiveness in the hypoxic environment, which is the day of the demise of these monsters that can bend steel with empty hands. In the three-month war of attrition, about half a million underground demon soldiers were consumed.

In the lavish dungeons of the South, demon lords are now waiting for the end in fear. These pretentious lords never imagined that they would now be pushed over by an army of cavemen.