Dong Zhanyun predicted that he was not far from the real grandmaster! It is estimated that it was because the breakthrough was too fast before and the foundation was unstable, so it once caused Dong Zhanyun's cultivation speed to drop sharply!

The old man didn't care so much, and pulled Dong Zhanyun and ran to the refining room. Dong Zhanyun was also very curious about how the real refining weapon was made, so Dong Zhanyun asked the old man questions along the way. Dong Zhanyun's first question was: "Master, what is the most important thing in refining?"

The old man replied: "The mastery of drawing design, mold matching, opening and heat~!" Dong Zhanyun then asked: "Is the mastery of heat really so important?" The old man nodded and said: "A good grasp of the heat is equivalent to increasing the success rate several times out of thin air~!"

Dong Zhanyun also knew a little, so he asked another question: "Is the design of the mold difficult?" The old man did not reply: "Let's follow the study first, otherwise even if I answer more questions, it will be in vain~!"

Dong Zhanyun nodded and said, "Well, I know." Without further ado, after a while, the two of them came to the refining room located in one of the side halls of the main hall. The old man pushed open the door of the room, and Dong Zhanyun saw the thick stack of design drawings on the table at first glance.

Then Dong Zhanyun saw some neatly stacked molds on the ground, one by one emitting a pale silver metallic light. A silver-gray refining furnace hung in the center of the refining room, and a pile of refined swords and other dry weapons hung all over the refining room.

In addition, there is a pile of refined carbon that has been used a lot near the refining furnace. There was still a faint smell of charcoal wafting in the refining room. The refining pool on the side was also dazzling, and Dong Zhanyun couldn't take his eyes off it for a while.

The old man didn't care so much, the first thing he did when he went in was to ask Dong Zhanyun to refer to the thick stack of design drawings on the table. "From the simplest. The old man instructed as soon as he came. Dong Zhanyun then began to slowly look at the initial volume on the desktop, and a simple sword-shaped mold design began.

Dong Zhanyun looked at the drawings in front of him, which not only contained the sword embryo but also a detailed explanation of the entire module. It includes the blade, tip, edge, end, spine, blade, lattice, hilt, head, scabbard and spike. Dong Zhanyun started to look at the sword body until he saw everything.

Dong Zhanyun tried to copy some of the delicate details first, but after several attempts, he always failed. It's not his problem, it's mainly because the details are really too exquisite, so Dong Zhanyun can't depict it clearly.

The old man looked at Dong Zhanyun's seriousness, and couldn't help but nod and said, "Well, not arrogant or impatient, step by step, a good seedling~!" Seeing Dong Zhanyun copying on the paper, the old man couldn't help but say: "You are still too anxious, you have to draw a scoop according to the gourd first." ”

Dong Zhanyun took out a charcoal pen and began to draw. In this way, while watching and drawing, Dong Zhanyun also ate something during the break, and then began to draw quickly. Dong Zhanyun worked on it for five days and four nights, and finally traced a drawing exactly like the design on the morning of the fifth day.

Seeing Dong Zhanyun fighting so hard, the old man didn't say anything, so he left Dong Zhanyun alone to practice on his own in the refining room. Dong Zhanyun then drew several sketches, and roughly understood the basic structure and construction principles of nearly 30 kinds of weapons, such as swords, knives, halberds, guns, and meteor hammers.

After about eight or nine days, the old man finally brought that sturdy young man, Qin Guanhu, over. Seeing that Dong Zhanyun had roughly mastered the know-how, he gave Dong Zhanyun a jade slip. There are hundreds of common metal materials recorded in detail, and Dong Zhanyun is required to be familiar with them.

Dong Zhanyun's whole person continued to be immersed in crazy study, because in two months, Dong Zhanyun would go to the Blood Black Shadow to study. Right now, he's the least of time. Regarding the cast iron technology, Dong Zhanyun was the first to start practicing, and those refined carbon and a lot of graphite happened to be the most common methods for controlling insufficient firepower.

After about eleven days, Dong Zhanyun finally refined some fine steel from pig iron. After sleeping for three days, Dong Zhanyun began to try different kinds of refining methods, among which Hundred Steel, Finger Wrapping, Heaven and Earth Together, White Water Cold, and Black Ball Toughness were repeated by Dong Zhanyun over and over again.

In the end, Dong Zhanyun finally began to operate the entire refining process in person under the guidance of the old man! At this time, Dong Zhanyun's firepower was already above the seven-star rating, reaching the point of seven and a half stars. The old man couldn't help but praise this diligent and hardworking disciple.

Strictly speaking, the previous one was not Dong Zhanyun's first refining, that time with the help of all the women, and the refining was the most ordinary low-grade refining furnace, which was naturally not as professional as it is now. Dong Zhanyun himself knew how important this time would be for the future, so he prepared and practiced for nearly half a month.

With Dong Zhanyun's current cultivation, he could only support Dong Zhanyun to refine some weapons and alchemy furnaces, refining furnaces, and some pills and weapons at the peak of the lower grades. The top priority was to improve his cultivation, so Dong Zhanyun watched the old man on the side personally refine a Heaven Carrying Pill for himself.

These are the two fist-sized wind attribute and earth attribute inner pills that Dong Zhanyun obtained after killing the jungle leopard, Dong Zhanyun didn't use them for a while, and he can't refine the medium-grade pill now. So although the attributes were very in line with the exercises he practiced, Dong Zhanyun was not in a hurry to use them.

The old man made a list of some of the necessary medicinal prescriptions for refining Neidan—clover, Jiuyang Tianchi, eight ginseng medicines, and flower water. "Such a big inner pill is enough for me to refine a furnace and more than twenty Heavenly Carrying Pills, and these pills are enough for you to be promoted to the middle stage of the Grandmaster~!" the old man couldn't help but say.

Dong Zhanyun was not hypocritical: "Then Zhanyun thanked the master." The old man waved his hand and said, "It's okay, everyone is ready." Old man, I'll give you all a low-grade peak storage bag. Dong Zhanyun nodded when he heard this: "Then trouble your old man, master." ”

”

"Well, you don't have to be too polite. This is for the sake of the teacher. The old man sacrificed the flames of the Nine Blue Lands, slowly sketched a ring of fire on the alchemy furnace, and then said: "Any kind of mixed pill must remember the nine-character formula: 'Slow and stabilize the situation, try to calm and relax. ”

Dong Zhanyun silently wrote it down, and the old man said it again. Then the old man began to follow the above steps without saying a word, began to melt the two inner pills, and then said: "Slow melting, the flower water should be added half and half at this time." ”

"Hiss~!" A strong smell of saltpeter wafted from the stove, and Dong Zhanyun was so smoked that he couldn't open his eyes. At this time, the old man's voice came from his ear: "If the Qi Anger Technique has not been practiced to the seventh layer, add an appropriate amount of bezoar and nitric acid, so that the hard shell on the outside of the Inner Pill can be broken and turned into the purest medicine." ”

"Of course, if you practice to the point of becoming a teacher, you can purify the medicinal power to an extreme~!The rest of the materials are ripe and you can add them in one go~!" The old man didn't wait for it, so he added it in one go.

"Puff~!" Dong Zhanyun vaguely saw that the pills inside began to blend with fire and water, becoming more than twenty bulging pills. A strong medicinal fragrance to the extreme came to his nose, smelling the medicinal fragrance, Dong Zhanyun not only felt that the power in his body sprouted quickly like a spring sprout~!

At the same time, the spiritual power in his body began to be agitated, and Dong Zhanyun only felt that his body was inexplicably hot. Dong Zhanyun had no choice but to stabilize the restlessness in his body first, and asked carefully: "Master, does the strength of the flame also determine the efficacy of the medicine?"

The old man nodded, "That's right, it's a crucial point. Dong Zhanyun couldn't help asking, "What is the number one flame on the different fire list that the master surrendered?" The old man said with a little embarrassment: "Ninety-eighth." ”

Dong Zhanyun couldn't help but ask: "Then is the success rate of each promotion increased a lot?" The old man said: "This is natural, each promotion will increase the success rate by dozens of times." The efficacy of the medicine is increased by eighty~!"

Dong Zhanyun said "um" and then asked, "Then where is the alien fire?" The old man replied unexpectedly: "Although the alien fire has life, you can also choose not to look for it, but to fuse a variety of weak mortal fires. Of course, the success rate is not so high. ”