This huge project of artificially changing the content of the atmosphere lasted for nearly half a month, ionizing hundreds of huge lakes with a radius of tens of thousands of square kilometers, and injecting endless oxygen into the atmosphere, increasing the almost thin oxygen content on Mars to 20 percent.

On the Zod spacecraft, the bright white energy pillar with a loud roar finally dissipated, and the last wisps of oxygen were released into the atmosphere.

Because Mars has not yet formed an ozone layer, the sun's ultraviolet rays drive directly into the toxic gases that are all over Mars, which will catalyze the oxidation reaction between these toxic gases and the surrounding oxygen, turning them into non-toxic gases.

It won't be long before Mars will naturally transform into a beautiful planet suitable for life.

"The tasks have been completed, and the next part of the biological breeding work will be handed over to you." Zod stood in the spaceship hall, looking at the endless earth in front of him, and exclaimed: "Although there are no creatures here yet, I can imagine that in the near future, this is another earth. ”

"I'll get people ready to breed on Mars right away, Zod, do you want to stay and have a look?"

Zod shook his head and said, "No need, I still need to take care of the affairs on Krypton's side, and I have been out for too long this time, so I should go back." ”

"Alright, I'll send you back!"

Ye Chen knew that the babies that could be born every day in the Origin Room on the side of Krypton were very limited, and it would take a lot of time for the new Krypton to recover, and he had indeed troubled Zode for a long time during this time.

After that, in the blink of an eye, Ye Chen teleported Zode and them to the space near the new Krypton Star together with the spaceship, and after a simple separation, Ye Chen returned to the real world again.

Moon, Mid-Moon City.

Now. On the construction base of Yuezhong City, 30,000 robots started at the same time, and the huge building complex is under intense construction, and towering steel buildings are rising from the ground. Above the sky, the steel protective skeleton covering the whole city has been basically built, and it is only necessary to inlay several layers of airtight tempered glass into these tight steel skeletons, and then pour enough oxygen into them, so that the city in the middle of the moon has basically been built, and all that needs to be done is needed. It is to complete the construction of the city's infrastructure.

As soon as he entered the Moon City, what Ye Chen saw was that the engineering robots were busy nervously, constantly unloading huge and heavy pieces of tempered transparent glass from the trucks next to them, and with the help of the mechanical vehicles with long mechanical arms, the huge pieces of glass were embedded into the steel skeleton hundreds of meters high.

"The protective shield of Midmoon City is divided into five layers, the outermost layer is the protective layer, from the outside to the inside, between the first and second pieces of glass is a vacuum area, and the second and third pieces of glass will be filled with ozone to prevent the interference of the sun's ultraviolet rays. Then the third, fourth, and fifth panes of glass below are just for protection. Five layers of glass up to ten centimeters thick are enough to ensure that the atmosphere of the city in the middle of the moon will not leak, and once the city shield is accidentally or artificially hit, it will peel off. The engineering robot will react within three minutes and repair it in time. ”

The screwdriver walked behind Ye Chen and explained to Ye Chen in detail. There is no atmosphere in the city in the middle of the month for the time being, and the sound is through the wireless signal. It was transmitted to the thinking headset that glowed blue next to Ye Chen's ear, and Ye Chen could also talk to others through this thinking headset.

Ye Chen nodded and continued to walk towards the city. met Ye Chen's eyes. It is a tall steel pillar that is inserted into the air several hundred meters high, supporting the overall structure of the city's protective cover.

"The steel skeleton of Midtown is extremely heavy, and the outside structure alone is not enough to support such a large weight, and this is not counting the uninlaid glass parts. These pillars are the skeleton pillars of the city in the middle of the moon, and there are 150,000 of them in the whole city, and there is a steel pillar every 10000 meters. Although these pillars are not large, they are made of high-strength steel made by a special process, and the 150,000 steel pillars in the city together are enough to support ten times the weight of the city's protective cover. ”

"Can these tempered glass be inlaid on top of it?"

"Two weeks later, 30,000 robots have been started, and 300,000 pieces of glass can be inlaid every day, and at this rate for half a month, the city can be injected with oxygen."

"Where does the oxygen injected into the city come from? And how to solve the problem of water sources? Ye Chen was a little excited, the first city he built was about to be completed, and when the time came, with his advanced science and technology, he would definitely be able to attract a large number of immigrants, and this glorious city in the middle of the moon would definitely be able to shine like a bright jewel in history at that time.

"The oxygen thing is very easy to do, and most of the various mineral deposits we mine are oxides, and the metals in them are refined, and a lot of oxygen is obtained as a by-product. Knowing that the owner was going to build a city on the moon, this oxygen was retained, and he waited for the completion of the construction of the city in the moon. In addition to oxygen, there are other accessory gases such as nitrogen, and we will construct the atmosphere structure of Midmoon City according to a specific ratio. ”

"As for the water source, this is the Arctic region of the moon, which stores a lot of water resources, and there is no need to worry about the lack of water. When the city is occupied, we will ensure that the water supply of the city is met. ”

The screwdriver said confidently that the construction problem of the city in the middle of the month was checked by him, and there was no slack in the whole project, and the screwdriver was not worried at all, and there would be irreparable results after the completion of the project.

"Well, that's the case for Midmoon, and when the city is filled with air, we can notify the governments of the Earth, let them send diplomats to visit, let them see the city we have built on the moon, and spread the benefits of the city among humans. Now your mission is Mars, the atmosphere and landforms of Mars have been modified, and there is only transplant life left, although this matter may be a little troublesome, but I still give it to you, I want to make the whole of Mars another Earth. ”

Ye Chen informed the screwdriver of the plan in his heart, although Mars is now desolate and lacks organic elements for life reproduction, if there is artificial influence, the time for the explosion of life on Mars will come soon.

"Yes, master, I'll get ready at once." The screwdriver said respectfully. (To be continued......)