Fine work is what Yuantian is best at, and it can be said that there is no mistake in the slightest adjustment of proportions. As long as it deviates a little bit, the spirit pattern will have no effect.

The nib of the pen walks very slowly, for fear of making a little mistake. Gentian calculates the proportions of each stroke while drawing the standard version.

The size of the miniature spirit pattern is one-twentieth of the standard spirit rune, so the size of the spirit pattern is 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, Gentian stopped writing. My eyes are swollen and I can't stand it, and I have to take a break. If you can't see a stroke accurately, you will lose all your efforts if you make a mistake.

Fortunately, after practicing Xuanyuan Open Heaven Gong, his eyesight has increased greatly, otherwise it is really not easy to see such a small stroke change.

Not only did his eyesight increase greatly, but his recovery power 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 pays off for some people, and when the eyes are swollen and painful again, the spirit pattern has been completed for the most part.

After regaining his eyesight again, Yuan Tian 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 of the spirit pattern, and sure enough, there is nothing wrong with 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 Yuan Tian mixes better than most outer disciples is that he can treat things rationally. The same is true for manufacturing, no matter how accurate it feels, it is not as accurate as the data.

Draw by feeling, and no matter how skilled you are, there will always be times when you make mistakes. However, if you draw according to the data, as long as you deviate from the standard, you will hardly be wrong.

By the time the first standard version of the artillery spirit pattern was completed, Yuan Tianzhi Dao had already mastered the method.

Due to the lack of proficiency, I can't draw spirit patterns on medium-grade rune paper, so I have to practice on 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, Yuan Tian confidently began to draw spirit patterns on the white paper. This thing is difficult to learn because I have never touched it, and it is still easier to draw than runes. After all, spirit patterns are just lines, and they don't want to be as intricate as runes.

The first hand of drawing a talisman on the white paper is very good, and the pen is smooth and there is no obscurity, so you should not go wrong. After finishing the drawing, he put down the pen, and Yuan Tian picked it up 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, Yuan Tian 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 sturdy talisman is feasible.

If it doesn't work, you have to try it before you know it, and you don't hesitate anymore! The rib source lifted the talisman pen, lightly dipped it in cinnabar, and began to draw spiritual patterns on the talisman paper.

Once you bring spiritual power, the feel will be different. Before, I used to draw on white paper with charcoal, and I felt very relaxed. But nowadays, drawing on medium-grade rune paper with a rune pen still feels difficult.

Thanks to the cultivation of Xuanyuan Kaitian Gong, his physical strength and endurance have increased a lot. It is a coincidence that there is no book, and Senior Sister Xuanyuan's iron scroll is too timely, it is simply sending spirit stones.

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

The process of drawing spirit runes is also quite time-consuming, and Yuan Tian 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 the template material for the restraint spirit pattern is not easy to find.

The spirit pattern itself has no attributes, no matter what attribute the spiritual power is infused into it, it will be transformed into the most primitive spiritual power, just like the spiritual power 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 five element attributes, or not a spirit stone with five element attributes? I've heard of spirit stones without attributes, but I've never seen anyone use them.

There is another problem, if you want to carve out a complete spirit pattern template at one time, the spirit stone required is very large. It is very rare to see such a large piece of medium-grade spirit stones, even high-grade spirit stones are not such a large piece.

You have to find a material that can smoothly transmit spiritual power, 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.

There are a lot of bad ideas in the little head of the pork rib source, but before you can find the right ingredients, you still have to draw them by hand.

After connecting the spirit pattern required for the solid rune and the spirit rune of the artillery rune, the input spirit power was tested 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.

Of course, the runes have to be stamped with a seal, and how tiring it is to draw with a rune pen. This first seal Yuantian plans to cover the sturdy rune first, after all, this safety factor is high, and if it fails, it won't blow himself up.

Although there is a guarantee of the mysterious hut, I am afraid that if I don't have time to throw it out, I will really turn into braised pork ribs.

"Smack", Yuan Tian raised the sturdy rune seal, aimed at the space between the spirit patterns, and fell gently.

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

It's good! It's okay to be relieved. Yuan Tianyi's ass is on top of the futon, and he can violently infuse spiritual power. After a while, the spiritual power 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, and there were a total of twelve empty spaces. With the assistance of the biscuit face futon, a total of effort was completed.

There are even fewer vacancies left for the Purple Fire Talisman, only eight. This means that this paper cannon can fire eight cannons in a row without inputting spiritual power.

"Smack." The purple fire rune seal fell eight times, the wood attribute spiritual power was also injected eight times, and the first paper cannon was successfully manufactured.