While Chen Xin was busy with the construction of the new urban area, other domestic departments were not idle either.

The national strategic adjustment brought about by the end of the civil war, the various requirements and controls under the original war model were abolished, and the focus of national construction and development was shifted back to people's livelihood, which has really improved the country's situation in the past few months.

There is no need to maintain the high-intensity combat and consumption of the army. A large amount of steel does not need to be used to make shells, but can be used to manufacture various machinery and production tools to improve production conditions...

The precious railway transportation capacity was liberated and there was no need to transport materials to the front line every day, which brought a significant rebound in the domestic supply level...

The factory does not need to produce military products day and night, but can be transferred back to the production of civilian products, which also increases the types of domestic material supply...

In short, although the country still has to bear the assistance to Europe and support the construction of the Middle East defense line, the overall situation is gradually improving, and various constructions that have been suspended due to the war have also resumed, which has made the lives of the Yan people significantly better in the past few months.

Even the aid to Europe has been greatly improved due to the adjustment of domestic productivity, which has enabled Europe to gain many advantages on the battlefield.

Judging from the current situation of war, if alien creatures do not cause any other trouble, it is unlikely that they will break through the European defense line in terms of the current situation of human beings, and the possibility that the Eastern European defense line and the Middle East defense line are now useful is relatively low.

However, Yan Kingdom and Lucia did not intend to abandon the construction of these two lines of defense. On the contrary, the two countries accelerated the two lines of defense currently under construction, intending to take advantage of the opportunity when Yan Kingdom's current productivity was liberated from the civil war to complete the defense line that was enough to be called the New Great Wall as soon as possible.

Of course, this is not because the two countries have paranoia of being victimized, want to waste domestic resources, or simply want to build a wonder, but because the countries that have fought with alien creatures clearly know that there is no reason to say with these alien creatures, and they cannot have any luck mentality.

It is better to spend a lot of resources to build a defense line into a useless decoration than to give up the construction of the defense line just because the situation is not at present dangerous.

Instead, we must seize the time with advantages now and improve the defense system as soon as possible. In this way, even if alien creatures can make any trouble, humans will have the capital to resist.

Moreover, not only the construction of defense lines, but also the countries are further strengthening their military production and military construction in their respective domestic countries. The Lucians even proposed to organize the military R&D departments of various countries to cooperate and take out the technologies of each company so that they can develop military equipment that can learn from the strengths of many families and better adapt to the needs of the current war.

European countries are very supportive of this proposal. After all, there is often technical cooperation among European countries, so there is no problem. Moreover, the technical equipment used by countries to fight alien creatures now comes from the assistance of the Yan Kingdom, so they are not stingy with their own technology.

As for Lucia, they had actually opened their own technology database to Yan State as early as when they first received assistance from Yan State.

Moreover, due to some grudges and entanglements between Yan Kingdom and Lucia, the technologies of the two countries are actually very interconnected, and there is no problem with technical cooperation.

However, it is obvious that Yan Country's technology is the strongest among the three parties. Rather than joint research, it is actually a large part of the advantage of Yan Country.

However, the Yan Kingdom agreed to the joint research proposal proposed by Lucia for the sake of uniting all parties and for the purpose of fighting against alien creatures.

After all, the military equipment of the three parties now relies on Yan Kingdom to provide it. Although Yan Kingdom has advanced military technology, from another perspective, the military equipment production capacity of Lucia and European countries has also been wasted in this way.

If the Yan Kingdom does not give them technology, they can only produce old-fashioned equipment, and how much of these equipment can play in the battle against alien creatures has obviously been tested in actual combat.

Anyone who can play a satisfactory role will not be equipped with all the equipment of the Yan Kingdom.

Therefore, the joint research plan was approved, and the Yan Kingdom opened technical information on the foreign trade version of the main equipment for power armor, exoskeleton electromagnetic rifles, Titans, etc. to European countries and Lucia.

And countries obviously cannot be stingy, and they have taken out all the technologies they can produce.

After all, before the technical disasters of various countries, everyone knew each other clearly. Although they were not forcing them to take out their old foundation, they could still distinguish whether the things they took out were good or bad.

So even if some countries want to cherish their own treasures, other countries will not let them do this.

However, although all countries have developed their own advantages in their hands, it is obvious that the development of new equipment cannot be said to be done by combining various technologies.

Before the disaster, Ah San studied the main battle tank and obtained the most advanced mainstream technology in various countries at that time, but the things he produced were just amazingly expensive industrial garbage.

Therefore, this joint research project mainly studies a series of equipment produced by Yan State, trying to apply the technology produced by various countries to these equipment and improve these equipment.

In addition to these improvements, the joint research project naturally needs to develop something and achieve some results to prove that this joint research project is not a project to be viewed.

In order to achieve this goal, there must naturally be a large-scale project that can at least produce some practical results that can play a relatively important role in the battlefield.

But it is not easy to find such a large-scale project, because the series of equipment used by Yan Kingdom now, except for the unopened land ships and mobile bases, other equipment already covers most of the equipment used on the battlefield at present, and it is not easy to develop something new.

So all countries took out some equipment research and development plans before their disaster. Some of them were just the updates of the current equipment of various countries at that time, while others were works with great imagination.

Some of these plans are reasonable, but a considerable number of them are the products of designers to let themselves go. Although the creativity and ideas in them are really good, they are not impossible to be used as research projects, but they are obviously not suitable as the main target of the entire joint research project.

However, among these multiple plans, the joint research project still selected a suitable project as their research project.

This project is the Nantianmen Plan launched by the Yan State military.
Chapter completed!