After explaining everything that needed to be explained, Chu Yuan chose to log off directly.

The construction of the new city was beyond Chu Yuan's imagination.

Originally, when Chu Yuan and Yun Xi were out playing in the wild, they accidentally discovered an S-level city construction blueprint and planned to wait for the right time to build a city.

After all, having a city has unimaginable benefits for future development.

Originally, the plan was to build a city outside the Great Xia Dynasty. On the one hand, it would add some land to the Great Xia Dynasty, and on the other hand, it would also allow the dynasty to have a relatively independent territory.

The blueprint has always been with Chu Yuan. Otherwise, when encountering this situation, the only thing Chu Yuan can do is to use the B-level city construction blueprint given by Su Can.

City construction blueprints are very rare. Even the cities of the Great Xia Dynasty mostly reached their current level through continuous upgrades in the later stages.

An S-class city is a higher-level city than the main city. Even in the Great Xia Dynasty, only the former Elemental City and the current Great Xia Imperial City were initially S-class cities.

An S-level city construction blueprint can be used as a blueprint for the construction of an imperial city of an empire.

Chu Yuan simply chose to use it as the new city of Black Stone City.

As for logging off at this moment, Chu Yuan was waiting for Yunxi.

Yunxi left the mortal world before because Yun Qingfeng discovered an opportunity suitable for Yunxi, and this opportunity underwent some changes after Yunxi infiltrated.

As a result, Yunxi was temporarily unable to return to the mortal world.

At this moment, after Chu Yuan finished making the arrangements for such a big thing, he also planned to discuss it with Yunxi.

Yunxi is better at handling some details than Chu Yuan.

When I came online again, it was already the next morning.

Unlike the situation when he went online before, the place where Chu Yuan appeared at this moment was surrounded by a large number of craftsmen working.

At this moment, the outer walls of the new city have been mostly built. The progress can be said to be very fast.

As for defense, Chu Yuan did not conduct any tests because there was no need.

During the construction of the city walls, a large number of alchemists were running around, some were strengthening the walls through alchemy, and some were testing the strength of the walls.

Even in this new city that is not surrounded by city walls, there are a large number of alchemists and mechanical engineers conducting mechanical experiments on the open space.

The new city was built mainly based on alchemy. As the fief of the divine alchemist Marquis, it would be really embarrassing if the city did not have alchemy.

What's more, Chu Yuan has always liked the power of alchemy.

Otherwise, I wouldn't have collected so many blueprints of special alchemical machines.

When Chu Yuan arrived here, dozens of alchemists and mechanical engineers were surrounding a mechanical cannon that was emitting purple light.

After seeing the appearance of this machine cannon, even Chu Yuan's eyes brightened a little.

Amethyst Demon-Slaying Cannon!

A+ grade alchemical machinery, a type of city warfare weapon, and even a weapon from ancient times.

Many weapons in ancient times were offensive weapons that were powerful but difficult to control in terms of damage. The Amethyst Demon-Slaying Cannon was one of the best.

According to the description on the production diagram, if this Amethyst Demon-Slaying Cannon attacks the enemy head-on, even a third-level strongman can be injured.

Although, a strong person who has reached that level would not be foolish enough to face the damage of the Amethyst Demon-Slaying Cannon head-on.

However, as a city defense weapon, with the existence of the Amethyst Demon-Slaying Cannon, even a large number of enemies can be wiped out with a single shot.

However, this weapon has too many weaknesses.

First, in terms of consumption, the Amethyst Demon-Slaying Cannon can be said to be extremely horrifying. The consumption of one shot, if converted into gold coins, is no less than 50 million gold coins!

Even though Chu Yuan had a lot of assets, he would not dare to use them so extravagantly.

Even the Great Xia Dynasty only used it twice.

It is better to say that it is used to deter rather than attack.

Secondly, in terms of cooling, the Amethyst Demon-Slaying Cannon will enter a half-hour cooling period after each firing.

In addition, there is still half an hour to accumulate energy!

The third point is that this Amethyst Demon-Slaying Cannon cannot be moved. After it is placed, it can only fight in a fixed position.

Fourthly, the Amethyst Demon-Slaying Cannon is not particularly strong. If it is used five times consecutively in one day, there is a fifty percent chance that it will be directly damaged.

This damage process is irreversible.

Fifthly, the cost of maintenance is 50 million gold coins per year!

Chu Yuan only prepared two purple crystal demon-slaying cannons. If there were more, it would not be easy to consume them even with all of Chu Yuan's assets.

But two is not too few.

Even in the Great Xia Imperial City, there are only thirteen purple crystal magic-slaying cannons.

Chu Yuan didn't say much about the situation around him. After summoning Kunpeng, Chu Yuan left.

Before the construction of the new city was completed, Chu Yuan had already decided not to participate in activities such as dungeons that might allow him to leave the mortal world.

Perhaps because of good luck, Chu Yuan had originally planned to upgrade his level during this period of time, and now, taking advantage of this time, Chu Yuan can kill monsters and upgrade at will.

There is no room for error in the new city, and the upgrade can also continue.

My dear, there is more to this chapter. Please click on the next page to continue reading. It will be even more exciting later!