On the same day, Long Yuan went to the stone chamber early, and Chihong was already waiting for him there.

"In the next half month, you don't need to refine a weapon completely, think about the details of so many refining, and do special training on these details. Now I'm going to teach you how to know length, and then I'm going to test your eyesight, which is your ability to visualize. Three days later, I estimated the length of all the weapons here in various parts, and I was wrong, and I will knock you to death. Chihong said.

Long Yuan looked at the round stick in the teacher's hand, touched his head involuntarily, and responded, "Yes, teacher." ”

Chi Hong then picked up a long stick that was one person high, with dense scales on it.

"One foot ten inches, one inch ten, one minute and ten cents, one centimeter and ten millimeters, one millimeter and ten silks, one trace of ten cents, one flicker of ten micro. Rulers, inches, minutes, centimeters, millimeters, silks, sudden, micro, how many of these lengths do you know?" Chi Hong asked.

"Teacher, I only know the size and the points. Long Yuan replied.

"The words are exactly the same, and that's where they come from. Now you only need to master the points, and in the future, after your refining attainments improve, you will find that the accuracy required to refine weapons is getting higher and higher. Sometimes, the slightest gap in the refining of weapons can be a grade gap. "Chihong is colorful.

"It seems that refining weapons really isn't something that anyone can refine. Long Yuan sighed.

"Do you still have to say that?"

"This rod is reserved for you to measure, to test your ability to visualize. Chihong threw the ruler to Long Yuan.

"I'll talk to you about the angle. Speaking of angles, it is related to circles, and one is a circle with the same length. Chihong took out another plate that looked like a compass and a sundial, and there were still dense scales on it.

"A circle is divided from the center to three hundred and sixty degrees in a circle, and one time is sixty minutes, one minute and sixty seconds. This is the dial on which the angle is measured. {In ancient times, there were more than 365 degrees a week, and it was not used here.} }

"These students haven't heard of it. ”

"Give you a few math books to explore on your own, that's not what I need to teach. If it weren't for your lack of experience, I wouldn't have taught you this. Who can make perfect, like your master and me, I didn't come into contact with these maths when I started refining weapons, but I can still do it without bias for a second. ”

"Teacher Niu Ben!"

"Niu, your second uncle, this is the basic operation. Listen well. ”

Long Yuan touched his nose, patted his ass and was scolded, his temper was really stinky.

"There's nothing more to talk about. In the future, you will eat, drink, and sleep here, and you don't have to go back. When you are tired of refining weapons, you will rest, and after resting, you will continue to refine. I used to give you enough time to rest and digest every day you were asked to refine weapons, and now you can catch ducks on the shelves. One of the two short needles is one minute long and the other is an inch long. When you can engrave these two lengths in your mind, you can go and refine the watercutter again. Chihong said that, and lay down on the rattan chair to make up for sleep.

Long Yuan looked at the two short needles in his palm, and looked at them for half an hour, and then he used his nails to mark the scale on the ground, comparing it with the short needle in his hand.

"It's long. ”

"It's short. ”

"It's long again. ”

"This time it was just right. ”

"It's still long. ”

......

Half a day later, the entire floor in the stone chamber was marked by Long Yuan.

"Alas, no, let's continue tomorrow, refining weapons first. Long Yuan felt that memorizing the scale was not an overnight thing, it was enough to stop, and perseverance was the right way, so he put away the short needle and refined the handle of the masonry hammer.

After the hammer handle was refined, Long Yuan used a ruler and a dial to measure, but the result was still biased and not straight.

"Come again. ”

For a whole afternoon, Long Yuan was refining the hammer handle, but it still didn't work. Long Yuan knew that this was because he was too inexperienced and unskilled, so he was not discouraged, and trained repeatedly.

In the evening, the descendants of the Huomian clan brought the food, and after Long Yuan finished eating, he opened the "Nine Chapters of Arithmetic".

"A temple on the top of the mountain has a pot of wine, Erle is bitter, eat the wine, the wine kills, you can't kill it, Le Erle. This homophonic notation of pi is really interesting. ”

......

Two days later, the true qi in Long Yuan's body was exhausted, and he could no longer refine weapons, so he went to Chimeng to practice. Although Long Yuan couldn't use True Qi, it was not necessary to distinguish between him and Chimeng, and Chimeng also knew Long Yuan's situation, so he gave him as a sparring partner.

Long Yuan still needs to be familiar with the use of the Qi Blade, and it is indispensable to fight with Chimeng, and in the process of training, he can also run the Fire Crown to Burn the Sky and replenish the Qi Sea.

Another day later, Long Yuan was knocked all over the head by Chihong, and there were a lot of mistakes in his estimating the size of his weapon.

Because he had long known that the teacher's teaching method was very bad, Long Yuan did not say anything, and continued to take the steps that were not done well in the process of training the refining weapon.

Although Chihong was lying on the rattan chair, his old eyes were confused, but once Long Yuan made any mistakes, he would remind him loudly.

Long Yuan stayed in the stone chamber for another ten days, and at this time he was sitting cross-legged on the ground, refining the blade of the stone axe. After his own exploration, Long Yuan finally found the trick to make the weapon strike.

It was still to let the flame rotate and squeeze the True Qi material, but Long Yuan no longer controlled the flame to rotate around the material, it was the method of polishing the handle of the cylinder.

Long Yuan attached a small ball of unquenchable flame to the blade of the axe and rotated it to achieve the effect of polishing. It's like placing a handkerchief on the table, pressing it with your hands, and twisting your wrists. On the other side of the blade, there is also a small ball of unquenchable flame doing the same.

"Tut-tut, this kid. It's good to accept this kid as a disciple, but it's still me, the master, who teaches him well. Chihong looked at the image on the wall, grinning lightly, revealing a mouthful of old teeth.

"Huh......" Long Yuan turned the axe into his hand after refining it, and a smile appeared on the corner of his mouth.

The axe blade is fully open, and it is comparable to a kitchen knife.

"Teacher, tomorrow I should be able to refine the masonry hammer and the stone axe. Long Yuan said with a smile.

"Hmm, how's the visual inspection ability, how many of those weapons can be estimated within a certain range of errors?"

Listening to Chihong's words, Long Yuan subconsciously touched his head, he was about to be knocked into a Buddha during this time.

"I'll give you a few more blueprints the day after tomorrow. Let's go back and rest. ”

Long Yuan knew that Chihong had asked him to rest, and now his forehead was indeed a little sore.

"Go back and get some sleep. Long Yuan also breathed a sigh of relief, he was really tired during this time.

In half a month, he refined weapons nearly a hundred times, and one day he couldn't refine well, and finally when he got up, he slept for an hour and refined more than ten times.

After returning to the room, Long Yuan fell asleep directly, even if his mental strength was stronger than that of ordinary people, he couldn't withstand such fatigue.

After a good night's sleep, Long Yuan woke up feeling refreshed.

"I have to replenish the true qi in the sea of qi. Long Yuan looked at the sea of qi inside, and the true qi inside had bottomed out.

Sitting cross-legged on the bed, Long Yuan began to run the Fire Crown and Burning the Heavens, absorbing the fire attribute clear qi in the cave.

"Whew. ”

Half a day later, Long Yuan exhaled a breath of white qi, and the sea of qi in his body filled up again, and the clear water at the bottom of the sea of qi seemed to be a little more.

"The true qi seems to be a little more condensed than before. Long Yuan felt the true qi in his body and muttered to himself.

"Huh?"

There was movement in the sea of qi, and Long Yuan was startled.

"It's time to break through. ”

It had been nearly two months since Long Yuan broke through the realm last time, and when he was refining his weapon, the temperature of the furnace fire was transmitted to the sea of qi, accelerating the flow of true qi in the sea of qi, and at the same time, the true qi that was swollen by heat had been squeezing the four walls of the sea of qi.

Now the walls of the sea of qi are finally starting to loosen.

Long Yuan kept his heart and concentrated, absorbing the Qing Qi into the sea of qi again, and at the same time trying to break through. A moment later, the four walls of the sea of qi collapsed, expanding its capacity again.

The corners of his mouth were slightly raised, and Long Yuan's mind did not relax, and a large amount of clear qi formed a miniature tornado that connected to the sea eye on Long Yuan's chest.

After passing through the meridians, these pure qi turned into pure true qi, and at the same time, the turbid qi in the sea of qi was also expelled from the body under the operation of martial arts.

"The realm of the transformer is extreme. ”

Feeling the power in his body, Long Yuan smiled.

"It seems that learning to refine weapons is really the right choice, if this is not the case, the air blade must be tempered by itself, and it is also necessary to be familiar with its use and combat methods. That's not going to be able to break through so quickly. Long Yuan muttered.

To refine the Qi Blade, you must use the clear water at the bottom of the Qi Sea, and once you use it, you don't know how long it will take to cultivate back.

Breaking through to the Transformation Weapon Realm, Long Yuan was in a good mood and went directly to the stone room. If he progresses a little further, he will be able to refine his natal weapon.

"Yo, it's so quick to break through to the Transformation Weapon Realm?" Chi Hong was also taken aback when he saw Long Yuan.

"Teacher, it's already very slow, I still want to break through to the Aura Realm before I find the Mountain and Sea Treasure Book. Long Yuan said.

"Do you think that breaking through the realm is an arch cabbage?" Chi Hong glanced at Long Yuan, and then said, "I didn't expect you to break through so quickly, in that case, you should refine the natal qi blade first." This process is best done in the Transformer Realm. What realm and what realm tasks, too early or too late is not good. ”

"Teacher, do you need to pay attention to any problems?" Long Yuan sat down directly, since the teacher said so, Long Yuan did so, even if it took the clear water at the bottom of his qi sea to make him feel a little painful.

"First confirm what your natal qi blade is, a knife, a sword, an axe or a hammer? Because the natal qi blade will have a life-saving effect in the future, so don't think about whips and the like, the simpler the better. ”

Long Yuan thought for a while, his current weapon has a ruler or a moment for the sky, which is extremely competent, and the ruler form can be used as a heavy sword, and the martial arts of Long Yinliu are displayed, and the moment form is wide open and closed, which is the most suitable for his strength.

And in the future, he will be able to refine weapons by himself, and after some consideration, Long Yuan decided that his qi blade is a short sword, which is simple and direct, extremely flexible, and can cooperate with his hand-to-hand combat and jiu-jitsu grappling.

"If you decide, you can take nine-tenths of the clear water at the bottom of the Qi Sea and a drop of blood from your heart into the Qi refining furnace, and then fill it with true qi. It must not be calcined over a low fire, and finally placed in a puddle at the bottom of the sea of gas after the tire is formed, and wait for it to take root. ”

After learning these details, Long Yuan began to refine the Natal Qi Blade, which was not difficult for him now.

"There is only a tenth left...... the corners of Long Yuan's mouth twitched slightly, refining the Natal Qi Blade actually consumed so much True Qi, and it still consumed the purest liquid True Qi in the sea of Qi.

"There's nothing to feel sorry for, you've broken through to the Transformation Realm, and the realm won't fall. The amount of these True Qi is not worth mentioning at all compared to the amount of True Qi you need to break through to the Qi Flame Realm. Chihong saw Long Yuan's expression and smiled.

"The Arrogant Realm is a big pass. "Long Yuan now knows that when a martial artist enters the Aura Realm, he is expected to catch up with the top and peerless masters in the world, and this process will definitely not be easy.

After reining in his mind, Long Yuan began to refine his natal qi blade, and this process was not difficult for him now.

Two hours later, Long Yuan grabbed it with one hand, and a two-foot-long qi blade appeared in his hand.

"Hey!"

Long Yuan used enough true qi to wrap his true qi around the qi blade, directly extending it to one zhang.

Brush!

Long Yuan's wrist moved, and a corner of the table in the distance was cut off, and there were still five corners left on the four-corner table.

"Although it can extend the qi blade with true qi, it is too consuming true qi. Long Yuan muttered to himself.

"The air blade fetus hasn't taken root yet, you transform it again, what you did today is in vain. ”

Listening to Chihong's words, Long Yuan hurriedly put away the qi blade in his hand, and he couldn't use it for the time being.

"After a day of rest, I also broke through to the Transformation Realm, and I also had an air blade. For the next month or so, you need to be mentally prepared. You only have one hour a day to eat, drink, and rest. Chi Hong smiled at Long Yuan, seemingly very satisfied with his own arrangement.