Among the four major steps in making the source box, the condensation is the most important.

Because it is directly related to the formation of this source array structure.

Xia Yu has now mastered almost 5 kinds of temperature-controlled source array structures, all of which he has learned and explored by himself according to some organ source boxes.

Because it was the first time he used these tools, for the sake of safety, he first chose a relatively simple "Fan's structure" with an energy conversion efficiency of about 92% - this is a classic structure created by Fan Rongjie, a generation of 4-star organ magic masters more than 100 years ago, and is known for its simplicity and ease of operation.

Master Fan has created dozens of outstanding source array structures in his lifetime, many of which are high-level structures at the 4-star level, and the effects of various abilities are incredible.

Of course, he can create a better temperature control source array structure, and the best one even exceeds the standard customized by the agency association by more than 30%.

But the structure chosen by Xia Yu is the simplest, and the requirements for materials and production techniques are relatively low, which can be said to be very easy to promote and popularize, bringing benefits to ordinary people, so this structure is directly named "Fan's".

In addition, it has passed the 50-year design property rights protection period, and anyone can directly use and transform it without paying a fee, so it is also the most widely circulated temperature control source array.

Fan's structure told Xia Yukai that he was already familiar with the road, and he quickly adjusted the perception cyclone construction to complete.

Then, he sent out a perceptual tentacle.

The moment the sensing tentacles touched the jade yin jiao, the jade yin jiao suddenly emitted bursts of brilliance, which was the energy brilliance that the crystals inside it were reorganizing according to the "Fan's structure".

Soon, the brilliance gradually dissipated.

Xia Yu confirmed that the "Fan's structure" had stabilized in the jade yin glue, and then controlled the sensing tentacles to shape the shape of this jade yin glue into a small rectangle, then turned off the thermometer and took out the new source box that had been formed with a heat-resistant clip.

Gently wiping the beads of sweat from his forehead, Xia Yu looked up at the table clock on the wall.

The assessment has just passed 16 minutes, of which nearly 11 minutes are used for grinding, and less than 3 minutes for glue making and coagulation respectively.

Xia Yu felt that he was still a little unskilled in his movements, and he was not familiar enough with the characteristics of Yuyin sand, and there was a lot of delay in grinding, so he still had some room for improvement in the future.

"It's finally time for the final step!"

Because it is an assessment, there are time limits and times restrictions, and Xia Yu is still a little nervous.

Every step of his movement is not very familiar, and the operation is cautious, after all, there is very little actual combat practice.

Fortunately, everything is going well so far.

As the name suggests, its nib is actually a specially treated source crystal, because of the sensitivity of the source crystal of materials such as jade yin sand, the portrayal of non-source crystal materials will destroy its crystal structure and destroy its crystal that has been reassembled.

The Yuanzi pen provided here is also quite advanced, Xia Yuluo thought about it as soon as he thought about it, and then drew it one by one with the help of a magnifying glass.

He didn't pay attention to the movement next to him at all, and naturally didn't notice that the white-clothed clerk who was supposed to be in charge of accompanying and supervising his exam throughout the whole process had already run to the next room.

............

The room next to Xia Yu's assessment is an assessment room that is obviously much larger.

There were four or five people gathered in a circle, watching from a distance as a brightly dressed young man was making a source box.

If they had been here, they would have recognized this man at a glance as the young man who had stepped down from the luxury shuttle.

At this moment, the young man looked extremely serious, and was carrying out the key condensation operation in front of the thermometer.

After about three minutes, he gradually stopped and breathed a sigh of relief.

"Mao Gongzi succeeded!"

"Yes, this condensation type to build the source array is the most difficult step, Mao Gongzi only took less than three minutes, it's really amazing!"

"It's really worthy of Mao Gongzi, if I remember correctly, the glue making step that tested the accuracy of perception and control just now, Gongzi only took 4 minutes, right?

The people who spoke were all white-clothed clerks, they didn't actually belong to the Organ Teachers Association, but they were employees who had been recruited through the review conditions, but they were all high-level agency apprentices, and they were responsible for the apprentice assessment here all year round, so their eyesight was good.

Of course, they are better at their legs and mouth than their eyesight.

As soon as he heard that Mao Gongzi was coming, he was not far from the assessment room he was responsible for, so he made a special trip to pat himself.

However, the strength of this Mao Gongzi is indeed quite good among the many assessors.

Generally speaking, the time for ordinary apprentices to make standard source boxes is about the same, grinding for 10 minutes, glue making, and coagulation for 5 minutes, and the final painting pattern is generally 3 to 5 minutes, plus a little preparation and delay time in the middle, the difference is only half an hour.

In the beginner apprentice assessment, the stipulated time is 1 hour, and only a 1-star source box with 80% energy conversion efficiency needs to be made, which can be said to be quite ample.

For the intermediate assessment, to complete 3 1-star source boxes with 90% conversion efficiency, and make an 80% 2-star source box at the same time, the total time given is two and a half hours.

Counting the time of mistakes, it is very tight.

There are many people who have barely reached the level, but because of nervousness or mistakes, they do not complete the required 4 source boxes in 150 minutes, and they will not be able to pass.

Soon, the young man in Chinese costume skillfully completed the painting in one go, which made these clerks compliment.

The clerk in charge of Xia Yu's assessment saw that they had finished saying all the good things, his mind changed, and he said with a smile, "Young Master Mao, you have completed three 1-star organs, and it only took 80 minutes, and the remaining 2-star traps have plenty of time!

"Liu Sheng, you kid is still really good at talking!" The middle-aged man in a black suit smiled, he was the housekeeper of the Mao family, and seeing that Gongzi was indeed a little tired, he hurriedly stepped forward and said, "Childe, why don't we have a cup of tea?"

"Good!" the young man in Chinese costume nodded.

............

Xia Yu has already completed 2 source boxes and is preparing to make a third.

According to his familiarity, he intends to make a regular power structure source box.

The power source array structure is widely used and has many types, and Xia Yu has come into contact with 9 kinds that can be used on a large scale and achieve a conversion efficiency of more than 90%.

"However, the quality of the instruments and materials here is so good, it's a bit of a waste if you don't use it......"

Seeing that there was still enough time, he decided to give up these nine mature structures and try a new structure of his own design first.

The one-star power source box is guaranteed!

Unlike ordinary people who only want to understand and learn to make certain source arrays when they learn mechanical techniques, Xia Yu has used the super resolution of 16 perceptual tentacles to try to modify that structure and further deepen his understanding in almost every time he has studied a structure thoroughly.

The vast majority of such attempts have failed.

Often, a slight change leads to a structural collapse or a significant reduction in interest rates.

However, with his in-depth understanding of some source array structures, he also roughly grasped some basic directions, and finally tossed some successful transformation structures.

The power array structure, which he himself named "Wedge-2", is the one he considers to be the most successful, or unexpectedly successful.

Prior to this, Xia Yu had studied and studied a variety of classical structures, and the wedge-shaped structure was one of his favorites.

The Wedge-shaped Source Crate is also a classic Source Crate of the Federation, which is known for its stable structure and large output power, and is generally crafted into a more lethal weapon, such as a crossbow trap.

It has also passed the 50-year design property protection period, and there are some workshops on the market that produce its improved source box.

On that day, Xia Yu was looking for a way to increase the energy output power of the Mauser pistol's source array, and many attempts failed.

At the moment when he was about to give up, there was a sudden burst of perception in his mind, and a superfluous line appeared in a mysterious and mysterious way—the original wedge-shaped mechanism was already very stable and beautiful, and it seemed that a trace of it would feel blasphemous—and after this line was added, the wedge-shaped structure did not collapse, but looked extremely perfect!

Yes, perfect.

Xia Yu's limited vocabulary and feelings make it difficult to really describe that kind of structure, and he can't remember how he conceived such a perfect structure, so he can only attribute it to an explosion of inspiration.

And it's a two-star source box!

Or maybe you can call a blind cat to meet a dead mouse?

In any case, this new wedge structure has a very peculiar change, and the output efficiency is greatly increased, even a little scary!

Xia Yu found that Mauser couldn't bear it at all, so he didn't mention it to Song Qingyun.

At the same time, the energy conversion efficiency of the source box made of this new structure reaches about 93%, which can be said to be quite high.

With this number guarantee, he didn't worry about failing the assessment, so he moved his mind to try to use better materials and equipment to see what he could achieve.

Grinding, glue making...... Xia Yu was cautious, but the speed was a little faster as he moved skillfully.

Soon came the step of condensation.

The core of the "Wedge No. 2" is still a wedge-shaped structure, but it is slightly more complex than the original structure, and it is actually more troublesome to build.

Xia Yu didn't make a big deal this time, and directly condensed all 17 perceptual tentacles, comprehensively constructing and transforming them from all angles......

Finally, with his delicate operation, the jade Yin Jiao began to burst out with bursts of brilliance, and the duration was much longer than the simple "Fan's structure". It wasn't until three and a half minutes later that the subtle jade yin sand crystal structure was sufficient.

Seeing the brilliance disappearing, Xia Yu did not stay, and directly controlled its shape to shape into a wedge-shaped strip-shaped source box with a thin front and thick back.

Then he took out the source pen and drew wedge-shaped lines on the surface of the source box according to his own ideas......

It took more than 4 minutes to complete the new power source box of this "Wedge-2" structure.

Yes, the source box in front of Xia Yu now belongs to a new type of source box that he created originally!

Looking at this source box, Xia Yu once again had an inexplicable feeling in his heart, as if he had integrated into this world a little more, and was constantly leaving his own traces in this world.

After completing the "Wedge-shaped No. 2" source box, Xia Yu became more and more satisfied the more he looked at it.

He felt that today's new source box was of very high quality, the energy efficiency should be good, and with the magical ability after the addition of that mysterious line, I am afraid that many high-level apprentices will be difficult to complete.

Seeing that there are nearly 100 minutes left, Xia Yu only has a 1-star source box left to complete, and he feels that this assessment time seems to be too long.

At this time, he noticed that the white-clothed clerk who was supposed to be inspecting and supervising him next to him didn't know where he had gone.