The Republic of Dawn reached a strategic cooperative relationship with the newly emerging underground alliance in the underground world. Humans living on the surface know that the country is composed of an individual. Only when the national strategy is open and clear can the maximum effect be achieved. It should be that cooperation between countries is ultimately economic cooperation. However, doing business between national governments and national governments is very inefficient. The state formulates rules and manages it. Only businessmen who pursue interests have the time to spend time.

Therefore, strategic cooperation is not something that the conspirators imagined that the leaders of the two countries made secret agreements? Instead, it directly formulates economic cooperation rules for business exchanges between the two countries, and then the industries and commerce below the two countries communicate with each other according to their respective ear product needs.

There is no hatred between the underground world and the surface world in this exchange. According to the official media of the Dawn Republic, this war of the underground world's underground alliance is a war between the cavemen in order to fight for independent right to survive and justice. The flames of revolution will surely plow the evil ploughed courtyards that have spread throughout the underground world for millions of years.

In this way, the underground alliance with a large amount of mining economy exchanged minerals for the currency of the Dawn Republic, and then the underground alliance with a banknote made picky and selective purchases of various manufacturers in the surface world. A large amount of industrial support for food and food flowed into the underground world. The industrial sectors of the entire surface world began to prosper when raw materials fell. No one would know in front of money, and they despise the buyers as aliens in the underground world. As for the war, the Dawn Republic did not send a soldier into the underground world, so no one was worried about eating carrots and worrying about the unity of the Dawn Republic and the evil underground world. At this time, those who had moral integrity deficiencies in the entire underground world were probably regarded as insufficient IQ balance just after speaking.

As for how to compete for the orders of the rich men in the underground world, it is necessary to serve the employer. Here we can see the profit-seeking nature of capital. Although the Dawn Republic did not send a soldier or a soldier to the underground world, human beings can still be seen on the war line of the underground alliance. These are not proletarian fighters with an internationalist spirit, but adventurers of this era.

Ronte took a deep breath of oxygen from the oxygen mask. If this young man from the surface world wants to give a comment to the underground world, it would be terrible. The humidity is high and the temperature is as high as 30 degrees. You cannot wear very neat clothes in the underground world. If the clothes are very neat, it will be wet in a while, so women in the underground world may be the sexiest clothing in this world, absolutely bikini-style outfits. As for men, it is probably a layer of cloth around their waists.

Although the underground world is filled with stuffy and humid air, it has been particularly humid in the past two years. As for the reason, the Republic of Dawn will never admit that the summer project on the west side of the mainland has a significant impact on the climate of the entire underground world.

Ronte gasped. As a man who claimed to be an adventurer family, Ronte could only sing in ancient bards that mysteriously were dungeons everywhere, and they were not taken by people at all. Ronte claimed to be an adventurer family. About fifty years ago, when the Dawn Republic was not established, the adventurers in this world took swords, guns, and various weapons to obtain magical crystal cores in the dangerous jungle, as well as various precious materials, and obtained finance from the group of magicians who mastered a large number of gold coins.

Since the Republic of Dawn has flattened the area where large areas of the surface world gathered, and provided a lot of stable jobs to ordinary people, the adventurer's profession has disappeared. But now, Longt is hired by his boss to invest heavily in the underground world to develop his business.

No matter how high-end the product is, any product is used in any high-end technology, but if it is not designed according to the actual situation, there will always be problems. For example, it is ridiculous to use the highest-end carbon fiber to make a stir-frying pan. The environment of the underground world is definitely different from the surface world, so it must be an underground world that someone has arrived, observe the application of the product, collect data, and create better products. As for the opinions of the underground alliance, it can be solved. As for why companies in the surface world are so active in solving the problem? Of course, it is because of orders and due to the product demand of the underground world, companies in the surface world have almost broken their heads and promoted their products to the underground world.

As for the underground world? Longte took another breath of oxygen from the oxygen mask, which made the cruelty of the war in the underground world reach an unimaginable level for people in the surface world. After the huge flash shock wave exploded in front, the short cavemen around Longte carefully observed the battlefield with a periscope. In the combat space contained in the huge underground cavity, all the growing vegetation has been flattened, and various fine sand and gravel and humid water vapor mixed into the ground. However, in this humid space, oxygen has become extremely precious.

After observation, soldiers of the underground alliance set up thick thin-walled cannon tubes in the tunnel. Half-lings plugged the cannon bullets of these gas tanks into the cannon tubes. A series of "bang" sounds, and the huge and heavy explosion sounds were violently turbulent in the underground space that was only a few hundred meters high. The violent fire balls emitted shock waves swept around with countless gravels. A large amount of gravel on the entire ground spread straight from the center to the outside, forming a form of radiating outward from the center. That is, all the stone fragments on the earth directly below the explosion were shaken into powder by the shock wave, forming a bowl-shaped depression. Then, the larger stones brought out slender marks on the ground under the push of the shock wave.

Under such explosive power, there were no living creatures within two hundred meters of a bomb's explosion range. Although Ronte had already blocked his ears, he still felt his head tinnitus as if he was suffering from a heavy punch under the loud bang.

However, at this time, soldiers from the Underground Alliance brought oxygen masks and launched a charge towards the ground under the guidance of armored machinery. The fierce sound of bullet fire filled the battlefield. The effect of large-scale air-fuel bombs washing the ground was to greatly consume the oxygen in the underground world. The environment of the entire battlefield became extremely harsh, but it also provided guarantees for the victory of the Underground Alliance. In a safe observation area, Ronte saw that cavemen soldiers took firearms and attacked the climbing underground soldiers. These underground soldiers, Ronte, had seen in the laboratory. The powerful muscles could bend the steel cages as thick as human arms, and crawled on the surface extremely fast. It was comparable to the speed of crocodile lurking underwater and suddenly attacking.

Seeing that the underground world is a creature with sharp teeth, Ronte fully felt the correctness of the Dawn Republic's support for the Underworld Alliance. When they usually wake up dormant, they are bloodthirsty. If these creatures killed for killing are to rush to the surface, it is simply a disaster for the surface world. On the contrary, the underground alliance has a race that yearns for a good life, can still deal with. This war must happen in the underground world.

Of course, these ferocious soldiers are not as active as ever in the surface laboratory, but are clumsyly waving their claws after being covered with sparks of bullets. Their sharp claws are frequently lost while the underground alliance soldiers are rolling and dodging.

If there is not enough oxygen in a strong muscle, it will breathe anaerobically when exercising, and a lot of lactic acid will appear in the muscles. The muscles will become sore. The current performance of these soldiers is a manifestation of hypoxia. A large number of air bombs exploded in this confined space, which has consumed oxygen to a low value. Now, the occupied areas of the underground alliance have vertical shafts on the ground to ventilate the underground world. However, the underground space is now closed.

The powerful underground warriors are now fighting against the Alliance's cavemen in this confined environment. As a result, these races that are naturally suitable for combat are now tragic. They crawl out in large areas in the area, but they cannot fiercely attack the fire network.

The clanging combat mecha and the rotating machine guns sprayed bullets around. A group of underground warriors crawled out from a dark place. Several combat mechas' rotating machine gun towers swept towards it, and the steel cone feet were inserted into the corpse of an underground demon and inserted into the rocks under the corpse. The entire mecha stood firmly on this position. All the high grounds in the entire position were controlled by the firepower of the underground alliance.

This underground area has basically changed hands. The alliance's legion once again tightened the encirclement network. The space taken down is only part of the underground network. Above it is the space occupied by the demons. However, the space occupied by the demons now, the underground cavity worlds in all directions have fallen into the hands of the alliance. The empty underground spaces are squeezed by positions and battles. The doomsday of the demon lords in the southern underground world of the continent is about to come.

As for Ronte, he is calculating that as the oxygen indicator consumes, the performance changes of air bombs. Ronte writes down these parameters and reports them to the arms production department above. The arms manufacturers will modify them based on these parameters. Of course, Ronte is not only working for military-industrial enterprises, but the oxygen hood of the alliance in the Underworld is used in combat. So in terms of usage details, Ronte is collecting feedback information from underground soldiers. These information will be given to the manufacturers employed by Ronte.

Now the underground space where the battle is really full of dead bodies, and the fierce battle between the two sides is a battle between firepower and muscles. However, as long as the soldiers of the underground alliance guard the festival with firepower, as time goes by, a large number of soldiers will greatly reduce their combat effectiveness in an oxygen-deficient environment. This is the day when these monsters that can bend steel with bare hands will perish. In the three-month battle of attrition, about 500,000 underground demon warriors were consumed.
Chapter completed!