Jiutian pointed to the four big characters on the blackboard.

"We're more than Roche structure. ”

"Roche structure?" a few students stared at the blackboard in confusion, apparently unheard of the term.

However, Dong Yongyuan fixed his mind and said: "The Luo structure is a composite structure that gathers the main structures of the nine basic spirit patterns, and it has a very important position in the weaving method. On the standard 4 square decimeters, that is, the area of a piece of paper, the superposition of the Roche structure as much as possible is a basic means to test the level of weaving.

"Well said. Jiutian clapped his hands and encouraged Dong Yongyuan, and added: "Superimposing the Roche structure on the standard area is not a simple superposition, which involves a lot of complex calculations. The distribution, position, and interaction between structures need to be accurate to the millimeter. The slightest mistake can lead to the collapse of the entire Roche structure. ”

It seemed that Jiutian had stolen the limelight from him, and Dong Yongyuan continued to add, not to be outdone: "The limit of the number of superimpositions of the Roche structure in the standard area is nine hundred and ninety-nine. If someone can superimpose the Roche structure to this extent, it means that the person's weaving has reached the end of the state. Even high-level spirit planters, not everyone has the weaving skills of the Great Perfection Realm. ”

"Very good! Dong Yongyuan obviously knows a lot about weaving methods. Jiutian praised again.

"Are you sure you want to compare the Roche structure with me?" Dong Yongyuan was unmoved, instead raised his eyebrows and said, "The senior spirit planter I used to follow to learn the weaving method was able to stack the Roche structure to nine hundred and ninety-nine. It just so happened that the teacher taught me the most was the practice of the Roche structure. ”

Jiutian remained silent, picked up the water cup and poured it, and said, "That's right, it's better than this." ”

In the cabinet under the workbench in the classroom, a large amount of woven material is stored. These materials have been processed and can be stored for a long time. Again, these are provided by the school and are teaching consumables.

When the cabinet was opened, trays of white twine were neatly arranged inside. These twine threads are a kind of spiritual plant called cloud hemp. This kind of spiritual plant is simple to cultivate, can be planted in large quantities, and after simple drying and processing, it becomes white twine, which is one of the most commonly used weaving materials in the spiritual plant world.

Jiu got off the podium, walked to the workbench next to Dong Yongyuan, took out a few trays of cloud hemp from the cabinet, and put them on the platform.

"Wen Zixin, you shout to start. Jiutian said.

"Yes!" Wen Zixin replied excitedly, and then walked to the center of the two workbenches.

"Let's go!"

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

The characteristic of cloud hemp is that it is light and thin, and a plate of twine the size of a human head seems to be held in the hand as if there is nothing to be held. It also feels much smoother than a single twine.

Jiutian unhurriedly opened a plate of cloud hemp, found the thread, and then slowly began to weave it.

Here, Dong Yongyuan's speed is much faster, a pair of hands beat rapidly, the cloud hemp plate rotates rapidly, the twine disappears section by section, and soon the most basic foundation has been done.

To make a Roche structure, you need to weave a square base fabric with a standard area first, and then start to superimpose the Roche structure on this base fabric.

"It's so fast!"

On Dong Yongyuan's side, there was an exclamation from a female classmate.

Jiutian was weaving the foundation, and his eyes had already turned to it.

I saw that Dong Yongyuan had already begun the superposition of the third Roche structure, and the twine was densely wound on the base, forming strange and beautiful lines, which were not independent, but entangled with each other.

Looking at Dong Yongyuan's palm again, it beats frequently, like a thunderstorm in spring, again and again.

The fourth Roche structure is completed!

For Dong Yongyuan, the four-path Luo structure was just a piece of cake, and he still had time to show off: "This is the Thunder Weaving Method, which I learned from that senior spirit planter. The characteristic of this weave is that it is fast and as fast as thunder. ”

After speaking, he also glanced at Jiutian and found that the other party had only started the weaving of the first Roche structure at this moment, and he couldn't help but feel a little proud. At least at this step, he came out on top and took the lead.

Jiutian smiled, his gaze retracted, and focused on what was in his hand.

The clock ticks by.

In about fifteen minutes, Dong Yongyuan had completed the superposition of ninety-seven Roche structures, and there was no blank space on the entire foundation, and the dense lines occupied the area of each thread.

The superposition of Roche structures, as the number increases, the difficulty will increase geometrically. Each new structure has to be accurately calculated before it can be placed in the right place, without affecting the previously completed Roche structure.

Dong Yongyuan's speed was already much slower than at the beginning, and every time he moved, he needed to pause for two or three seconds before he could make a decision. The amount of calculations made him sweat on his forehead.

As for the Nine Heavens, it is still going on unhurriedly, and one structure after another is filled into the foundation to form a completed Roche structure, and then the cycle repeats.

A few students who knew a little bit of weaving were running back and forth twice, informing the others in the classroom about the incident.

When Dong Yongyuan completed the 102nd Roche structure, 58 were completed in nine days.

When Dong Yongyuan completed 104, he completed 97 in nine days.

Going to overtake?

The onlookers listened to the briefing and set their eyes on the young lecturer. They found that the lecturer was still in that leisurely state at the moment, starting from the first Roche structure to the ninety-seventh, and the speed did not change at all.

Dong Yongyuan 105, Jiutian 105.

Flat!

Dong Yongyuan no longer has the energy to listen to these things at the moment, and all his energy, all his brainpower, is put into calculation.

Only by personally participating in the weaving of the Roche structure will you know how much the superposition of the Roche structure after a hundred years will be calculated. Each new structure needs to consider whether all the previous small structures will have an impact, and at the same time it will be entangled with other small structures.

107! Dong Yongyuan looked at the Roche structure in his hand, and was slightly surprised. In fact, he only completed 101 in the most recent test, and this time, perhaps because of the pressure, he actually weaved 107 Roche structures! This can be regarded as a relatively big improvement.

As soon as his mood fluctuated, Dong Yongyuan's hand shook violently.

Syllable!

The whole fabric suddenly collapsed and turned into a pile of fine threads, like snow, falling in a row.

Dong Yongyuan let out a long breath, his face was also a little pale, he had spent too much brain power, causing the whole person to be a little dizzy now.

But at least, he's improved this time.