SH Safe Zone. It has been expanded three times to form three rings that include the Outer Town, the Inner City and the Central District.

The inner city built back then was already overwhelmed and could not accommodate that many people.

A major expansion ensued.

The engineering construction corps led by Lao Tang became the main vanguard. At the same time, there are also several government-invested and privately established construction companies that specialize in the construction of the Corps and are responsible for the maintenance and construction of private buildings.

During this period of population expansion, Lin Chen ordered the establishment of an inner city covering an area of 100 square kilometers and an outer city area covering an area of 500 square kilometers.

In order to defend against possible attacks from the herds, each city district has built a steel wall using high-rise buildings left over from a bygone era.

After the engineering unit completes the basic construction, it will be handed over to the civilian forces to complete the subsequent repair and maintenance.

As a result, these civil society groups have developed extremely rapidly during this time, and the entire SH city has seen a thriving scene.

From this huge three-ring structure, a huge security zone for one million people has gradually been constructed.

People have gradually and spontaneously called this kind of city without the threat of insects and beasts the city of hope.

With the continuous influx of population and the large-scale reconstruction of the entire SH City, the entire City of Hope began to present an extremely prosperous scene.

The most obvious manifestation of this is in terms of science and technology, because human beings have lost too much basic technology, so Lin Chen found another path and used his strengthening ability to come up with another set of black technology systems.

At present, the Blue Earth Organization has the Ministry of Mechanical Science and Technology, the Department of Biotechnology, and the Department of Black Technology Reverse Reduction.

This newly established department is led by Lin Chen, and the other two departments work in synergy.

As a black technology reverse analysis department, a large number of professional technicians have gathered in it.

Unlike all the other departments, this department does not have personnel who specialize in science and technology, but instead trains a large number of technicians.

These technicians are actually Anomalies, or more accurately, simplified alchemists.

These alchemists were all people who originally had very strong spiritual power, and then through Lin Chen's activation, they obtained the projection of the Gate of Truth. The spiritual power in their bodies has been mutated, and they have a certain alchemist ability.

For example, some technicians have the ability to temper materials and can carry out special forging of metal materials to obtain materials with special properties.

Some technicians have perspective skills and can accurately reproduce black technology items, although they can't know the principle, but they can restore the manufacturing method to the greatest extent.

There were also some technicians who even had the same enhancement skills as Lin Chen. Ability to enhance specific components with Enhancement Skills. Of course, these technicians have limited enhancement capabilities, and they are also unable to enhance too many huge objects. But when they gather sand into a tower, they strengthen one part at a time, and then combine them to get a completed body of enhanced equipment.

Almost all of these technicians have some kind of special alchemy ability. If he is placed in another world, such a technician may not even be as good as an alchemy apprentice. But in this technological world, these technicians are simply top craftsmen beyond the ninth level.

With their hands, they can create a variety of high-tech equipment beyond imagination.

For example, the ion engine developed by Bi Yuwei and others recently relied on these technicians to manually build key components in order to create the propulsion engine of the highest technological level of human civilization.

And this large-scale empowerment ability is a new function obtained by Lin Chen after he successfully advanced to the level 4 alchemy form.

Previously, Lin Chen had gained six million gold points at one time. After spending three million gold points, there are three million left.

The remaining three million allowed Lin Chen to scrape together enough materials for his own promotion to the third level at one time.

Level 3 Alchemist costs 100,000 gold points.

But to upgrade a level 4 alchemist, it costs a million gold points, and at the same time, you also need to prepare a ton of adamantite. Since there is no such magical material as pure gold on earth. Therefore, Lin Chen could only rely on gold to make up.

And one meal of pure gold is almost equivalent to twelve tons of gold, so if Lin Chen wants to upgrade to a level 4 alchemist, he needs to collect twenty-two tons of gold.

Originally, he didn't want to upgrade so early, after all, it was a lot of money.

However, due to the rapid expansion of the Blue Earth Organization, it not only collected the population of many other cities, but also obtained a large amount of gold.

Lin Chen's task of exchanging gold for daily necessities has always been hanging in the government hall. Therefore, after joining Lin Chen's organization, many wanderers exchanged the gold on their bodies for daily necessities.

There are even many who see gold as an equivalent again. Collect gold everywhere. Not only did they trade gold privately, but they also exchanged it for the Blue Earth government to obtain a large amount of living supplies.

All this made Lin Chen's gold reserves rise exponentially.

By now, Lin Chen had scraped together twenty-two tons of gold. That's why Lin Chen promoted himself to the fourth level in one go.

However, after Lin Chen was promoted to the fourth level, he realized that he could no longer raise the level. Because the next level of ascension no longer requires gold, but a lot of Adamantite.

The consumption of up to one hundred tons of pure gold almost didn't scare Lin Chen to death. One hundred tons of pure gold is almost equivalent to one thousand two hundred tons of gold.

The only possibility of this amount of gold is the former Commonwealth Bank of Milican, an underground vault.

Or find a gold bonanza.

At this point, Lin Chen did not have hope for the time being. After all, it is a bit of an exaggeration to dig up this amount of gold. Under normal circumstances, it doesn't take more than ten years, even if there is such a big gold mine, you can't dig up so much gold!

Although the level 5 alchemist had no hope for the time being, the level 4 alchemist still gave him a big surprise.

Before level 4 it is called Alchemist, and level 4 is called Alchemist.

One is a scholar, the other is a teacher, the difference between one word and the abyss.

As an alchemist, Lin Chen already has the ability to make an inheritance for ordinary people.

Although the alchemy of this world has been greatly restricted, and even a certain mutation has occurred, this special activation inheritance has not changed.

Like before, Lin Chen did the ability activation for Bi Yuwei. It's just that at that time, Lin Chen could only inspire Bi Yuwei alone.

But now, Lin Chen can already activate the ability for multiple ordinary people.

It costs a few golden dots to be able to project the illusion of the Gate of Truth in the souls of ordinary people.

In this way, these ordinary people can also have talent alchemy, of course, as for what kind of alchemy can be obtained, it depends on personal talent.

For example, Bi Yuwei is very powerful and has gained the ability to reorganize matter.

And after repeated use in the past six months, she has been successfully promoted to the third level, and her ability to reorganize materials has been greatly improved.

Basically, in the blink of an eye, Bi Yuwei can use her spiritual power to change the internal structure of an object and complete an operation like magic.