Now that the Republic of Dawn is beginning to be flooded with more and more mecha manufacturers, with the development of the chip industry, the mecha operating system is becoming more and more flexible, and the signs of competition between companies specializing in the production of civilian mecha have appeared. The large-scale construction within the Dawn Republic has not stopped, so the demand for engineering mecha is very strong, driving the development of the mecha industry to adapt to market demand.

The price of some good engineering mechs can sometimes be comparable to that of the US military. These engineered mechs were manufactured and were selectively procured by the Dawn Republic government. So these high-end mechs are still man-made.

What did the Dawn Republic do with these engineering mechs? The answer can be found in the City of Overwatch in the western part of the Republic of Dawn.

Shouwang City, the history of the city's founding is as long as 12,000 years, and the entire city has been recorded in the Yuan Miao Continent periodically, and it will always appear periodically in the history of continental warfare. Watch City is a highland in the alluvial plain of the Blue River in the west, whenever the magic tide is in place, the southern part of the western part of the Yuan Miao Continent is always cleaned by the astronomical tide, and the annual tide can make the entire continental plain be in a swampy state for a long time. A large amount of seawater remains in the soil and fills all the low-lying areas to form large lakes, which cannot subside for a year or two, but this astronomical tide is once a year. And this stage is the time when the Sea Clan and the Continent Race are fighting each other, and the place of Overwatch City is the place where the soldiers of the two legions will fight.

Now the magic tide has just begun, the annual tide line has been advancing towards the continent year by year, and the signs of the astronomical tide infiltrating the entire western continent have appeared, and it is expected that in twenty years, it seems that this kind of historical scene is really possible.

Today, however, industrialization has begun, and the large amount of bauxite near Overwatch City has become the core of Overwatch City's manufacturing, and in the last two decades, this city of 120,000 people has attracted a large number of laborers from the plains who originally worked in agriculture to the city, learn technology, and become industrial workers. With the city's abundant energy, the city has reached a terrifying annual output of 900,000 tons of electrolytic aluminum. The scale of this smelting of aluminum is comparable to the scale of steelmaking from coal mines on the earth, and the reality is that there are no fossil fuels in this plane, and steelmaking is really not as convenient as aluminum smelting.

So now the Republic of Dawn uses a lot of light materials like aluminum. The entire city of watch, except for the absence of particularly tall skyscrapers, is actually very modern. Wide roads, all kinds of vehicles. The 50-meter-high parking platform stands in various communities in the city, and a four-rotor # aircraft with a 15-meter-long rotating propeller is busy flying over the city every day with loads of heavy objects, shuttling in the sky, forming a logistics network corresponding to the shuttle of ground vehicles.

However, from the periphery of the developing city of Sky Olive, a huge dam structure with a length of tens of kilometers is being built to the west of the city. In this large construction site, a large number of engineering mechs painted red shuttle through it. After the foundation was laid, huge aluminum pipes were inserted. The five-meter-tall mecha engineer carefully holds the metal pipe to dock with the metal pipe below, like building blocks. Huge aluminium metal pipes are inlaid with iron sheets in a grid state.

When the two metal pipes were docked, a dozen palm-sized robots crawled out of the cool box behind an engineering mecha, and these palm-sized robots climbed on the huge aluminum tube, climbing on the official road like a beetle, these robot beetles, with powerful magnets on their feet, which is why the aluminum tubes are covered with iron mesh layers. These machine beetles are distributed on both sides of the butt of the huge steel pipe, corresponding to the alternating emission of this red laser, so whether there is an aluminum tube or not, is there a neat one. These robot beetles observed very carefully, and the engineers who controlled the engineering mecha carefully aligned the aluminum tubes to a satisfactory degree according to the information transmitted by these robots at any time. Then a special crawling robot crawled out of the box behind the engineering mecha, and this robot came to the splicing gap along the straight line marked by the engineering mecha with a laser, and used the arc to hit a high-temperature ionic state, and the blue ion arc was smaller than the pencil lead, and it hit the gap with great precision. The gaps are melted and a seamless weld is completed.

After completing this docking, a thinner robotic arm popped out on the huge arm of the engineering mecha, and the high-definition camera on the mechanical arm flexibly probed the degree of the welding part, and the engineer sitting in the mecha cabin determined the degree of robot welding, and let all the robots crawl back to the toolbox behind them and continue to do other work.

In the process of this series, the engineers of the pilot mecha not only completed the physical work of carrying the huge ten-meter-long aluminum tube, but also completed the medium-technical work of alignment, and finally supervised the robot to complete the delicate work of precise welding. The entire dam, a spectacular structure that could only be seen in the days of the Magic Empire, is being built in an orderly manner.

The Republic of Dawn is ready to protect the eastern cities with this super defense system. At the same time, in order to ensure the safety of the Blue River, a fresh water source, the entire Dawn Republic has dug a large number of artificial canals for the Blue River to make full use of the water of the Blue River.

That's why Imperial Engineering mechs are in high demand right now. The tsunami dam system in a big city is actually not a big project, only 2,000 engineering mecha with high and low matching, with each other, can be easily completed within a year. Fifty kilometers of tsunami-proof megadam system. These dams will only be built to a maximum height of 35 meters. Because a 35-meter tsunami can only erupt on the surface of the sea after a meteorite falls on the ocean or a large earthquake on the seabed, and the tsunami that sweeps over the land reaches the sky a few meters high. It is only necessary to maintain this kind of aluminum tube structure concrete land dam in the face of the western waves, and as for the other parts, the seven or eight meter earthen dam can be directly dug to block the flooding of the surging tide in those days every year.

For their own safety, cities in the Western Plains have financially allocated a sum of money to support the construction of the dam. Let the cement industry in the Republic of Dawn usher in a piece of good news. Of course, this is only a city-level defense plan, and as for the national defense plan, the scale is even larger.

In contrast to the plan to defend against the tides, the Republic of Dawn is determined to completely eliminate the tides and make them invisible. In the winter of the 53rd year of the Elemental Calendar, the Dawn Republic carried out 372 underground nuclear explosions in the western underground, each with a yield of 1,000 tons. Such explosions caused seismic waves, one after another, appeared on the western continental plate, and through the study of seismic waves, the location of several underground spaces in the western part of the Dawn Republic continent. Most of these underground spaces, capillary-like caverns with a diameter of hundreds of meters, are only five or six kilometers above the surface.

There is a saying that the conscience of a city lies in the sewers. When a city is flooded with rainwater, it's because the city's drainage system to the ground is not good. The west coast of the Yuanmiao Continent was ravaged by the astronomical tide once a year during the Elemental Tide, and then the water receded and was not clean, and the entire Western Continent was flooded all year round. If the tide comes once a year, and then a month later all the water on the continent recedes into the river, and all the water on the continent disappears, leaving dry land, then as long as all the people on the land hide in the cities for that month, it will not matter at all.

That's right, that's how the higher-ups of the Dawn Republic prepared, ready to dig an epic pit for the landed Sea Clan. A big crater that caused a great flood caused by the astronomical tide and receded within a month.

For this huge project, Ren Di originally planned to name this huge project with "sewer", but the school officials of the Dawn Republic really couldn't bear Ren Di's naming level this time.

Looking at this huge plan, Wang Lung said with a somewhat undeniable tone: "Dayu controls the water, and China stands, so it's called the 'Xia' plan." What do you see? Wang Lung looked at the people around him, and then his gaze fell on Ren Di. Although it is an inquiry, the meaning is obvious, if it is a relatively low-level naming scheme, don't mention it.

In the end, the summer plan was implemented by the state. The plan is to carry out drilling above twenty already explored underground spaces in the western territory, and then excavate canals with higher river beds in various parts of the western land. Normally, these artificial riverbeds, which are slightly lower than the ground, do not enter the water, but when the astronomical tide arrives, when the water level in the natural rivers of the western continent soars, these rivers are filled with water, and then these rivers will send water into the patio, with a diameter of 50 meters, into the underground space.

In this way, every time the sea water floods the continent, after the tide is low, the water first enters the waterway, then enters the artificial waterway excavated in large quantities, and finally seeps into the ground. As for what effect does so much seawater have on the ecosystems that may exist in the underworld? This friend of the dead path does not die in the poor way. Ren Di governs the water to beggar-thy-neighbor. If seawater fills the ground, it is even good for the stability of the ground.

Huge drilling rigs, under the surging power of nuclear power, drill underground. A large amount of earth is excavated and brought to the surface at any time. Although the plan was to dig a passage with a diameter of 50 meters to reach the ground, in reality, a hole of about 300 meters was formed on the surface, on which various work platforms served the large machines drilling underground.

On the surface of the western region, a large number of artificial rivers are being excavated, and now the sea tide on the Immersion Continent is only less than one-tenth of the Immersion Land during the peak of the astronomical tide, as long as the underground infiltration channel is dug through, as long as these rivers are derived from this one-tenth of the immersion area. This tenth of the area can be restored to drying.

The feat of human beings challenging nature has begun to take shape as the surface of the earth is crisscrossed by rivers and excavated in a network, and the artificial veins of the earth are being formed.