After the city lord of Tianzhu City issued a ban, although the disciples were still quietly using it, it controlled time after all. Most of the time, the disciples regained their previous seriousness and concentration on cultivation and refining.

The disciples of Heavenly Forge City were not mortals after all, and after a period of time, they all realized their mistake of indulging in fun.

The communicator was no longer misused by them, but returned to normal use.

In just one month, Jiang Pre's harvest was extremely exaggerated, and there were millions of spirit stones.

And after having these spirit stones, Jiang Yu also purchased materials for mass manufacturing technology through the channels of Tianzhu City.

And all of this is done by Jiang Pre's robots.

Therefore, after the completion of the production line, Jiang Yu was almost completely let go.

In the small palace, this is no longer the place where the production line is placed, and it has once again become a place where Jiang pre-researches technology.

Level 4 technology is no longer something that can be completed in just a few days, and the scientific principles involved in it are also extremely complex.

In Jiuhang Mountain, Jiang Pre spent a month to complete three fourth-level technologies.

At that time, Jiang Yu only thought about running away, so he chose the technology that could help him escape to the greatest extent.

A flying ship!

An energy attenuator!

A repulsion meter!

The flying ship, needless to say, is Jiang Pre's escape tool; the energy attenuator is a bit complicated, forming a field within a hundred kilometers around it, reducing the energy of this area and weakening the energy attack; the repulsion meter is to form a strong repulsion force with the surrounding things to prevent the enemy from approaching faster than the flying ship.

With these three fourth-level technologies, as long as it is not the existence of the fifth or sixth level of the realm, Jiang Yu is very sure that he will be able to escape.

It's just that his master stonemason broke into Tianzhu City and fought with the old guy of the Three Vein Masters, which attracted the attention of the Third Vein.

Jiang Pre's escape path became simpler, and these technologies were not used much.

The only three fourth-level technologies are all defensive escape shapes, and even if they have nano-titanium hearts, their attack methods are still too monotonous.

The strength of the robot is only in the middle of the terrain.

This doesn't seem bad, but after coming out of the Nine Hanging Mountain, people like Shen Zhuo and the others have all gone into retreat, and when they come out, I'm afraid their strength will increase again.

At that time, the strength of the robot, I am afraid that among the younger generation of disciples of Tianzhu City, the top twenty will not be able to enter.

Jiang Pre's strength should also be improved enough.

And in this month, Jiang Pre also obtained two satisfactory technologies.

Level 4 technology - micromolecular blade.

Level 4 technology - radium cannon.

Micromolecular blades are countless blades composed of micromolecules less than a millimeter, and these blades are naturally not lifted by hand to cut, but float in the air, controlled by wireless waves to attack the enemy in the air.

It's a bit similar to a throwing knife, but it's more weird and changeable than the straight of a flying knife, and the micromolecular blade is more weird and changeable, making people wary of it, and moreover, the penetration is very strong, enough to cut an ordinary terrain triple.

The laser cannon, on the other hand, is a cannon in the traditional sense, which requires a long time to accumulate energy and has a huge capacity.

The Radium Cannon is charged for one minute, for every hundredth of a charge.

However, the lethality of this guy is also quite terrifying, as long as it is full of thirty percent, it is enough to bombard a Realm Triple.

The laser cannon is difficult to use in conventional combat due to the long charging time, but for some enemies that can be predicted in advance, it is difficult to imagine the effect.

Two kinds of fourth-level technology, Jiang Pre is still in development, and some failed products have also been produced, the micromolecular blade is fine, and the test will not cause any consequences.

However, the radium cannon, in Jiang Yu's two failures, exploded, the power was shattering, if he hadn't run fast, it was estimated that he would have successfully dedicated himself to scientific experiments.

The disciples of Tianzhu City were all frightened by this loud noise, and they thought that another enemy had attacked, and they were nervous, and even the city lord of Tianzhu City was alarmed.

When these people solemnly came to Jiang Pre's location, saw the huge pothole, and learned the truth, they were angry with Jiang Pre in their hearts, and they had a big opinion.

"This eighth vein disciple is not restless at all, thanks to me for the sake of his development of the communicator, my image of him has changed, and as a result, it is really easy to change, and his nature is difficult to change, I don't know why the city lord wants to let this murderous demon stay in Tianzhu City. Someone said with a gloomy face.

The city lord of Tianzhu City also had a bad face, this guy couldn't be stable in the city, and it was only a long time before he got into trouble again.

However, hearing the discussion of the disciples, he snorted coldly and looked at the disciples who were talking coldly.

The disciples were sincerely frightened and hurriedly shut up, but their prejudices against Jiang Yu deepened in their hearts.

The City Lord of Heavenly Forge City let all the disciples leave, and then solemnly warned Jiang Yu that these dangerous refining weapons were not allowed to be carried out in Heavenly Forge City.

Get it out of town!

And, let Jiang prep restore this place to its original state within three days, otherwise, punishment is indispensable.

Jiang Yu also knew that he was at a loss, so he could only agree again and again.

The city lord of Tianzhu City left satisfied, and Jiang Yu looked here alone, his residence had completely disappeared.

Only a huge hole is left!

This is still the Heavenly Casting Mountain itself has been refined, and the more it goes underground, the more solid it becomes, otherwise, it will not be the level of a pit.

"Hey, my nest!" Jiang Yu didn't care about the prejudices of those disciples against him, but was very sad that his nest had been blown up.

One by one, the robots were taken out of the Sumeru ring by Jiang Pre and began the great cause of filling in the pits and building houses.

Jiang was under a tree, thinking about the reason for the failure of the micromolecular blade and the laser cannon.

Although the manufacturing process has been comprehensively described in the scientific and technological information, the theory is the theory, and the reality is the reality.

The most important thing is that there are too many theories in it, Jiang Yu doesn't have time to understand them one by one, and many places are painted in the same way, and it is inevitable that some mistakes will occur.

However, mistakes can be smoothed out with time after all, Jiang Yu is now mentally strong, quick to think, and some small problems are quickly solved.

A month later, micromolecular blades and radium cannons were introduced.

The micromolecular blade is a palm-sized small box, this box is foggy white, and it is a collection of micromolecular blades.

As soon as Jiang Yu thought about it, the nano titanium heart in his body resonated, and a burst of ripples emanated, and the small box spread out, becoming countless sharp blades with a size of one millimeter.

Silently, the blades dispersed into the space around Jiang Pre, each of which was under the control of the nano titanium heart.

Suddenly, the blades headed towards a nearby tree, and in an instant, the tree turned to powder.

It's not a burst of energy, it's just an infinite cut.

"It's worthy of a fourth-level technology!" Jiang was pleasantly surprised!

The micromolecular blade turned into a small foggy white box, which was pre-collected into the Sumeru ring by Jiang.