However, at this rate of oxygen increase, it is progressing extremely slowly. If it continues like this, it will take another thousand years for the oxygen content in Mars' atmosphere to reach a level where humans can breathe freely. But Yan Fei clearly cannot wait that long, so he must artificially adjust the gas composition in the atmosphere to accelerate the change of Mars' atmosphere.

Fortunately, Yan Fei had already made plans. He once again controlled the Drone Carrier to leave Mars and head to Europa, where he retrieved the Super fighter that was no longer transferring sea water. Then he continued to advance, arriving near the more distant Saturn and began landing on Saturn's moon Titan. The reason Yan Fei came to Titan is to obtain the nitrogen in Titan's atmosphere.

Yan Fei wants to replicate Earth's atmosphere on Mars, and the most abundant component in Earth's atmosphere is not oxygen, but nitrogen. Yan Fei doesn't dare to arbitrarily take nitrogen from Earth's atmosphere because he fears unforeseen circumstances that could lead to an environmental collapse on Earth. However, nitrogen isn't exclusive to Earth in the Solar System; Titan contains a large amount of it. In Titan's atmosphere, the nitrogen content even exceeds 98%. If Yan Fei wants to acquire a substantial amount of nitrogen to alter the structure of Mars' atmosphere, then Titan is the best choice.

Previously, Yan Fei had built dozens of large nitrogen extraction factories on Titan. With ample energy provided by several Nuclear Fusion Power Plants, these factories have been operating for a long time, continuously extracting large amounts of nitrogen from Titan's atmosphere. Not only is Titan massive, but its atmospheric pressure is much stronger than Earth's, so manufacturing nitrogen on Titan is quite easy.

This time, Yan Fei returned to Titan to bring the Super fighter there, allowing it to constantly transport the nitrogen produced by the factories to Mars, to change the atmospheric composition on Mars and try to make Mars' atmosphere suitable for human habitation.

After delivering the Super fighter to Titan, Yan Fei once again piloted the Drone Carrier back to Mars. While releasing the nitrogen transmitted by the Super fighter into Mars' atmosphere, he also built more than a hundred Super Nuclear Fusion Power Plants on Mars' surface to provide ample electric power for its transformation.

During this period, Yan Fei has built a large number of Nuclear Fusion Power Plants across the Solar System. Relying solely on the smart factories on Dream Island or utilizing medium-sized Production Workshops could not meet his demands. However, he had previously constructed numerous Fully Automatic Intelligent Production Workshops in the Dreamland Cave World, and he also stored a large amount of resources there. So when those workshops began full operations, they could produce as many Nuclear Fusion Power Plant components as Yan Fei urgently needed.

At this moment, Yan Fei's Drone Carrier has three subsystems. The Super fighter has been stationed on Titan to transfer nitrogen, one Transport Aircraft is on Mars accepting various material transfers, and the last Transport Aircraft is on Spirit Divine Star. Through the space channel that connects Spirit Divine Star to the Dreamland Cave World, Yan Fei can easily transport equipment produced in Dreamland Cave World to any planet as needed.

Once these Nuclear Fusion Power Plants were completed, Yan Fei began constructing large Water Electrolysis Plants on Mars. In just one month, Yan Fei built thirty super-large Water Electrolysis Plants on Mars.

The role of these Water Electrolysis Plants is straightforward: to use the electric energy produced by the Fusion Power Plants in the water electrolysis process, splitting water into oxygen and hydrogen. The hydrogen is stored as a clean energy source for future human use on Mars, while the oxygen is released into the air, directly adjusting the proportion of gases in the atmosphere and their concentrations.

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