After arranging the "cold relief and disaster relief" work in Daxia, Chen Yu turned his attention to Merica on the other side of the ocean.

Although Tianyu Base is about to gather all the resources of the entire Great Xia Dynasty, it is too difficult for a single country to overcome this unprecedented disaster. To achieve a qualitative leap in human technology within a limited time to defeat the disaster, it is necessary to gather the resources of the entire planet Blue Star.

As the most technologically advanced country on the entire planet Earth, Merica naturally became Chen Yu's first target.

However, Merika has a strong military, and before the natural disaster, it was very easy for ordinary people to obtain firearms. It is conceivable that after more than a year in this extremely cold post-apocalyptic world, dealing with the survivors there must be much more difficult than in Great Xia.

Sufficient "cold-weather relief militia" soldiers must accompany the mission to ensure the success of this "cold-weather relief" operation.

However, the distance between Méridien and Bactria is more than 8,000 kilometers. If traditional means of transportation such as sleds were used, it would not only be time-consuming but also difficult to traverse the harsh natural environment.

In the current frigid weather, such a large-scale troop's long march is fraught with unknown risks.

While long-distance flights by aircraft could significantly shorten travel time, Tianyu Base currently only has a little over 30 fighter jets and around 70 civilian and armed helicopters.

Moreover, with such a long flight distance, there's no way to refuel. Chen Yu can't possibly refuel these planes halfway through the flight, can he? Wouldn't that reveal the secret of his other-dimensional space to the public?

Furthermore, with just over 100 aircraft, they can't transport more than a few people at a time, and they simply don't have the capacity for large-scale personnel transport.

As for transport planes and passenger planes, Chen Yu had considered them, but in this extremely cold weather, they were all in a semi-scrap condition due to lack of maintenance.

Even if a few transport or passenger planes that can still take off are found, their fuel efficiency and flight safety will be greatly reduced, which will undoubtedly bring huge uncertainty and risks to the entire operation.

Most importantly, these large aircraft have extremely high requirements for runways.

You have to understand that the entire planet Blue Star is currently covered by snow more than 10 meters deep. They can clear a few runways to take off from Great Xia, but what about after they fly to Merika? Where will they land?

It was precisely because of these issues that Chen Yu's trip to Merica was delayed.

Some time ago, when Chen Yu returned to the Tianyu Base headquarters to discuss the base's situation with the base's senior management, the issue of transportation tools was also discussed. Considering that the Tianyu Base now has more and more branch bases and various resources need to be gathered at the headquarters, the traditional sled transportation method is no longer suitable. Not only does it consume a lot of energy, but it can also transport too little at a time. Most importantly, the ground environment is now harsh and accidents are very easy to occur. The Tianyu Base's sled transportation team has accidents of all sizes every day.

It was precisely because of these real dilemmas and challenges that Chen Yu and the base's senior management began to explore new modes of transportation, turning their attention to advanced vehicles that could operate stably in extreme environments.

After numerous discussions and studies, it is generally agreed that utilizing airships as a new mode of transportation may be a feasible solution. Airships, with their unique levitation capabilities and low environmental requirements, have demonstrated enormous potential in extreme weather conditions.

Airships can not only fly at low altitudes, avoiding the impact of severe weather on high altitudes, but their large size and carrying capacity also enable them to transport large quantities of supplies and personnel at once.

More importantly, although airships fly relatively slowly, under the current circumstances, safe and stable transportation is far more important than speed.

Moreover, the extremely cold weather conditions actually provide favorable conditions for the airship's flight.

The helium or hydrogen used in airships increases in density at low temperatures, which helps to increase the airship's lift, enabling it to maintain stable flight even when carrying a larger payload.

At the same time, the low temperature also reduces the thermal expansion of the airship's surface materials, improving the structure's stability and durability.

After discussions among a group of scientific and technological experts, the airship plan was quickly finalized and implemented.

Tianyu Base quickly assembled a group of top-notch scientific and technological personnel to engage in the research and development and manufacturing of airships.

Now, nearly a month has passed, and the first airship designed and built by Tianyu Base has successfully completed its test flight and is now in mass production.

Against this backdrop, using airships as a means of transporting troops to Merica naturally became Chen Yu's preferred option.

The great advantage of airships lies in their ability to maintain stable flight under extreme weather conditions, which is crucial for this blue planet currently covered in ice and snow.

Moreover, the airship's carrying capacity far exceeds that of traditional aircraft, allowing it to carry a large amount of supplies and personnel at once, which is undoubtedly a huge boon for the upcoming trip to Merica.

Of course, airships used for military purposes require a series of military modifications and upgrades.

Chen Yu has instructed the people at Tianyu Base to expedite the military-style modifications and upgrades to the airships to ensure they meet the stringent requirements of the upcoming trip to Merica.

This will take some time, but Chen Yu is not in a hurry.

Sharpening your axe won't delay your work; Chen Yu has always adhered to the principle of doing things only after thorough preparation.

If the airship warships are successful, future "cold relief and disaster relief" efforts across the entire planet will be much easier.

To ensure the airship could handle various emergencies en route to Merica, the engineers carried out a comprehensive modification and upgrade.

Taking advantage of the lull between the modification and construction of the airship warship, Chen Yu planned to deal with a long-standing inner demon that had been lingering in his heart—the Fire Seed Base.