The visiting mission of the Joint Fleet leader led by Yamato, ended his ten-day visit, and then returned to the Longbow Islands on a transport plane the next morning.

During this ten-day visit, the Marshal's Mansion, the base camp, and the joint fleet still operated normally with sufficient personnel.

In accordance with the agreement, the joint fleet continued to transport construction support fleets to the Flying Eagle Islands, and the first batch of ship ladies who took the initiative to join the Marshal's Mansion had appeared.

The power takeover of the base camp has been completely over, and the preliminary system adjustment has been completed. The former core commanders led by Xu Ren were sent to the New Merit Forest of the Flying Eagle Islands.

The Central Archipelago Marshal's Mansion has relatively large movements.

An unprecedented large project, manned spacecraft project, is being continuously organized and developed by Yuanwang 1.

At the same time, the slightly smaller project is the comprehensive surveying and mapping project of the entire archipelago that Xu Xingchen just fought.

Xu Xingchen previously asked the Yuanwang to design a special long-range surveying and mapping aircraft based on the drawings of the KJV 500.

The purpose of Xu Xingchen was asked by Polaris Far-Wang 2. After a brief analysis, it was found that this goal actually does not require a special early warning machine, and the functions are a bit different.

This kind of enemy scanning work actually does not require professional combat command capabilities, nor does it require too strong detection capabilities, but requires longer battery life.

Moreover, the scanning, mapping and scanning directions of the sea and land are all downwards, while the early warning aircraft with a large plate radar on its head has a stronger upward scanning ability than downwards.

In the end, Yuanwang 2 decided that based on the Y9th, it was decided to add special remote sensing and mapping equipment to increase fuel as much as possible.

This transformation is not difficult. With the operation of Yuanwang No. 2, the design was completed in less than three days.

The most important indicator, the range, reaches 9,000 kilometers without manned, so that the area with a farthest distance of more than 4,000 kilometers can be mapped in one round trip.

While designing and producing the aircraft, Polaris organized more than 200 ship girls to conduct simple pre-job training as specialized surveying and mapping recorders.

After the training was completed, more than 200 ship girls were divided into sixteen teams, each taking planes to the military port in the outermost area controlled by the Marshal's Mansion.

With the cooperation of more ship girls, take over the local military airport and arrange the planes to the airport.

Then control these special surveying and mapping aircraft, turn on the implementation equipment and automatic recording equipment, and fly in a single horizontal formation towards the distance.

These data will be summarized into the North Star. After special processing, the cannon will be combined and maps of various types will be generated.

These changes are more intuitive in Xu Xingchen's system.

There is a world map in the system, but just like the strategy, the power or equipment you control has been to display the map.

The area I could see before was basically around the Central Islands, within a range of about 1,000 kilometers.

Now, one thousand kilometers around the three strongholds of the Flying Eagle Islands and hundreds of kilometers around the Longbow Islands.

Now, these observation aircraft, from the edges of these explored areas and towards the unexplored areas, will become the explored areas within hundreds of kilometers of the route they have flew, and the map will slowly appear.

These planes are like Xu Xingchen's eyes. They are flying forward in rows. The area is like a picture with thick dust removed, and it immediately becomes clear.

With the continuous implementation of observation actions, a piece of islands, various archipelago areas of large and small were slowly displayed on Xu Xingchen's complete map.

This process felt so comfortable that after Xu Xingchen sent Yamato away, he did not go to the construction center the next day, but went to the scientific research center to look at the map.

Because of the return of the observation plane flying westward, after the map sent was spliced ​​with the previous few days, Polaris discovered an archipelago that was unique.

Three huge islands, after being squeezed together, formed an inland sea, with only three narrow straits connected to the outside world, making them a natural refuge for civilization.

They are distributed at a latitude close to the Yangtze River to the Pearl River Basin. From here, we can see how huge their area is. It is currently estimated to be around 2 million square meters.

In comparison, the area of ​​the entire southern region is about 2.4 million square kilometers.

What surprised Xu Xingchen even more was that most of the land on these three large islands was very flat, with only a few areas with some low and sparse hills.

Because it is located in the archipelago, the three islands are basically temperate oceans, tropical monsoons, and tropical marine climates, and most areas are covered with dense primeval forests.

Most areas of these three large islands are land that can be reclaimed and cultivated, with at least more than 1.2 million square kilometers.

This number is almost exactly the total amount of the 1.8 billion mu of arable land red line in China.

That is, the lower area of ​​these three islands directly exceeds the entire country. Moreover, the land here is not scattered across the country, but is concentrated in the large plains, with temperatures and precipitation similar to that of the Jiangnan region...

The terrain of the Flying Eagle Islands is far worse than here, and the entrance to the bay is wider than here, and it is a dead end. If you are blocked inside, it may be over.

It was only because it was discovered early because it was relatively close to the two civilizations, and it became the object of competition.

The Flying Eagle Islands are really far behind this place.

Xu Xingchen, who was born into a typical agricultural civilization, had a simple introduction to the archipelago and could not live without him.

I subconsciously thought that all of this place would be cultivated into fertile fields, planting rice, corn and vegetables. These three islands could supply rations for 1.4 billion people across the country.

However, the total population of the world may not be 100 million, and there is no such apprentice at all. In fact, there are many areas to be developed within the Central Islands.

Compared to the earth, this world is really too empty, and there are too many potential space to be developed.

In addition to these three concentrated islands, there is an island with an area of ​​equally large size, mostly humid and hot plains between these three islands and the Central Islands.

In fact, including the Central Islands, there are not too tall mountains in the entire archipelago. There are only the middle position inside the northernmost end of the Central Islands and the evolutionary archipelago outside the southern part. There are some relatively tall mountains, and other areas are mostly low plains. Maybe this is the characteristic of the archipelago terrain.

But now these three large islands have the best conditions, they are connected in large scale, and the warm conditions are the best.

Apart from these four islands, the best conditions are the Longbow Islands and the Flying Eagle Islands, a large triangular archipelago in the north.

There is a larger island to the north of this island, but the terrain of this island is fine and its location is too north, and the temperature is not enough to support two-grade rice a year.

This is the problem in the world of the Marine Islands. Most areas have marine climates. Although places with high latitudes are not too cold, the heat in summer is not as abundant as continental and monsoon climates. This northern environment is more suitable for the development of animal husbandry rather than growing food...

Of course, this place is not impossible to plant. Britain and France have piled up their temperate marine climate areas in the Northeast to the extent of the monsoon climate areas during the rain and heat.

But there is too much land in this world here, and Xu Xingchen's vision has become wide open and he doesn't like these not particularly good fields.

There are still several very large islands discovered at present, but the conditions here can no longer touch Xu Xingchen's eyes.

Xu Xingchen looked around and found the results, and his attention soon returned to the three large islands.

"It would be great if we could recruit people from the earth to open up land and farm... Well, we can only think about it...

"But the Flying Eagle Islands can be given up and left to the joint fleet to be responsible for the construction. The subsequent development focus of the Admiral's Office will become these three large islands..."
Chapter completed!