At this time, Fu Yun's pen tip walked very slowly, for fear of making a little mistake.

He carefully calculates the proportions of each stroke as he draws the standard version.

Soon he calculated that the size of the gap in the miniature version of the spirit pattern was one-twentieth of the standard spirit rune, so the size of the spirit pattern was naturally one-twentieth of the standard spirit rune.

If this pen is one millimeter in length, then it should be twenty millimeters in length on paper.

However, in some places, even if there is a single stroke, it is not simply a straight line, but an arc or even a turn.

Then, after zooming in on the paper, the ratio of the arc and the turn cannot be wrong.

This requires more detailed calculations than millimeters to grasp the arc or the angle of the turn.

After only half of the drawing, Fu Yun stopped writing.

I kept staring, my eyes were swollen and I had to stop and rest.

If you can't see a stroke accurately, you will lose all your efforts if you make a mistake.

Fortunately, his eyesight increased greatly after practicing Luohe Gong, otherwise it would not be easy to see such a small change in strokes.

Not only did his eyesight increase greatly, but the recovery speed of his aura also increased a lot, and after only resting for a while, his eyes returned to his full state, and he picked up the pen and continued to draw spiritual patterns.

The hard work paid off, and when his eyes swelled again, the spirit pattern was already half completed.

After regaining his eyesight again, Fu Yun did not rush to continue drawing, but picked up another piece of grid paper as a ruler and carefully measured the size of the spirit pattern.

While measuring, I made a record, for fear of missing something.

Measure one miniature spirit pattern, and then measure one standard version spirit pattern to ensure that there is no error in one to twenty everywhere.

This kind of measurement record has two functions, one is to make sure that you have not made a mistake in the previous drawing, and the other is to accurately grasp the specific size of the standard spirit rune, and you will know it the next time you draw it.

The reason why Fu Yun mixes better than most outer disciples is that he can deal with things rationally.

The same is true for manufacturing, no matter how accurate it feels, it is not as accurate as the data. If you always draw by feeling, no matter how skilled you are, there will always be times when you make mistakes.

And if you draw strictly according to the data, you can't go wrong.

When the first standard version of the artillery spirit pattern was completed, Fu Yun knew that he had mastered the method.

However, due to the lack of proficiency, it is not possible to draw spirit patterns directly on the medium-grade rune paper, so you must practice on the white paper first. At the beginning of the practice, of course, you need to use grid paper and practice with reference to the grid distance.

After using up dozens of pieces of grid paper, Fu Yun confidently began to draw spirit patterns on the white paper.

This thing is difficult to learn because I haven't touched it, and it's still easier to draw than runes.

After all, spirit patterns are just lines, not as intricate as runes.

When he drew the first spirit rune on the white paper, Fu Yun felt very good, and his writing was smooth and there was no sense of obscurity, so he shouldn't make a mistake.

After finishing the drawing, he put down the pen and compared it with the standard version of the spirit pattern on the grid paper.

It's exactly the same, and there's no difference, so you can draw it on the rune paper.

To draw a spirit pattern on the medium-grade rune paper, Fu Yun became nervous again.

After all, this rune paper is not a strong material, and I don't know if the method I imagined to match the strong charm is feasible. As for whether it will work or not, you will only know if you have tried it.

Fu Yun lifted the talisman pen, lightly dipped it in cinnabar, and began to draw spiritual patterns on the talisman paper.

Once you bring the aura, the feel will be different. Before, it was easy to draw on white paper with charcoal, but now it is still a bit difficult to draw on medium-grade rune paper with a rune pen.

Thanks to the cultivation of Luohe Gong, his physical strength and endurance have increased a lot.

Fu Yun couldn't help but think that Senior Sister Luo's iron scroll was given in too timely, it was simply sending spirit stones.

The spirit pattern is to input the aura evenly in the process of writing, and there is no need to infuse a large amount of aura after the pen is closed, it only plays the function of connection and transmission, and is not the source of the power of the artillery.

However, the process of drawing spirit runes is also quite time-consuming, and Fu Yun began to think about ways to be lazy again.

Since the runes can be printed, why not the spirit patterns?

The only problem that needs to be solved is that it is difficult to find the template material for carving the spirit pattern.

The spirit pattern itself has no attributes, no matter what attribute the aura is infused into, it will be transformed into the most primitive aura, just like the aura that the monk absorbs from heaven and earth.

In this case, it becomes a question of what attribute spirit stone to use as a template.

Is it okay to have a spirit stone with the five element attributes, or not to have a spirit stone with the five element attributes?

I've heard of attributeless spirit stones, but I've never seen anyone use them.

There is also an important problem, that is, if you want to carve a complete spirit pattern template at one time, the spirit stones required are very large. I have never seen such a large piece of medium-grade spirit stones, and even high-grade spirit stones have not had such a large piece.

Fu Yun thought that he had to find a material that could smoothly transmit aura, preferably light and strong, and the area should be large enough.

After such a spirit pattern template is made, it can no longer be called a seal, but more like a simple printing press.

Fu Yun has a lot of bad ideas in his head, but before he finds the right materials, it has not become a reality, and he still has to rely on hand painting for the time being.

After Fu Yun connected the spirit pattern required for the sturdy rune with the spirit rune of the artillery rune, he put the spiritual energy into the test for a while, and there was no problem with running smoothly.

It seems that the spirit pattern is like a pipe, as long as it is not connected in the wrong place, it can be connected to each other.

The spirit patterns are all drawn, and all that remains is to add runes.

The most important thing is the first rune, as long as the first one is successful, it means that the whole structure is okay and can work normally.

As for the runes, of course, Fu Yun has to use a seal to cover them, how tiring it is to draw with a rune pen.

This first seal Fu Yun planned to cover the strong rune first, after all, this safety factor is high, and if it fails, it will not kill himself.

Although there is a guarantee of the mysterious hut, you are not afraid of 10,000, you are afraid of what if, and if you don't have time to throw it out, you will be sacrificed.

Syllable!

Fu Yun raised the sturdy rune seal, aimed at the space between the spirit patterns, and fell down gently.

A little input of some aura, normal operation and no vision.

Very good! Relieved that there was no problem, Fu Yun immediately sat on the futon and began to infuse the aura violently.

After a while, the aura of this first solid rune was filled.

The area of the medium-grade rune paper selected this time is not large, that is, the size of an ordinary desktop.

There weren't many sturdy runes that needed to be covered, leaving a total of twelve gaps. With the assistance of the cake face futon, the kung fu will be completed in a while.

The next space left for the Purple Fire Talisman was even less, only eight.

This means that this paper cannon can fire eight cannons in a row without inputting aura.

Syllable!

Syllable!

......

As the Purple Fire Rune Seal fell eight times, the wood attribute aura was also infused eight times, and the first paper cannon was finally successfully manufactured.