Early the next morning, Han Chen quit his cultivation early, opened the door, and walked out.

In the small courtyard, the aura was surging, and Han Qian was still cultivating with his eyes closed, obviously without rest, he just practiced all night.

"This little guy is so persevering!" Han Chen's eyes showed a hint of surprise.

This cultivation is not a one-time achievement, especially in the early stage of this cultivation, and it requires a combination of work and rest.

Ordinary people are new to cultivation, because the meridians in the body have not been tempered, they are still fragile, and in a short period of time, they can still withstand the washing of the aura, but after a long time, they will not work.

The cultivation in the early stage of "Naling Nine Styles" is the same, the pain is so severe that ordinary people can't bear it for a long time.

Han Qian was only a thirteen or fourteen-year-old boy, and his body had not yet grown and shaped, and the pain was even worse. But even so, to be able to practice penance all night without rest, this perseverance is far beyond ordinary people.

Shaking his head, Han Chen raised his hand to form a seal, dispersed the Thousand Heavy Array, and blew away the rich spiritual energy.

"Huh?"

Han Qian's eyelids moved slightly, and he opened his eyes.

"Young Master" saw Han Chen, and Han Qian hurriedly got up and saluted.

"Martial artists don't have so much etiquette, so they don't have to be so restrained in the future!" Han Chen waved his hand.

"Well, young master, wait a minute, Han Qian will go and prepare a meal!" Han Qian responded, and then went out.

"No need!" Stopping him, Han Chen said, "I have something to tell you!"

"Young Master, please speak!"

"I'm going to Danlou, the time is uncertain, you can go to Ling'er and them to inform them later, so that they don't have to look for me!" Han Chen instructed: "During this time, you don't have to do anything else, just guard the courtyard and concentrate on cultivation!"

"Yes!" Han Chen replied respectfully.

"But" nodded, and Han Chen's gaze fell on Han Qian. He also said: "Freezing three feet is not a day's cold, and cultivation is the same, there is a degree of relaxation, a combination of work and rest, you can get twice the result with half the effort, you should remember!"

Hear the words. Han Qian knew that Han Chen was referring to his all-night cultivation.

"Han Qianding should be remembered!"

Han Chen didn't say anything more, turned around and walked out of the courtyard, leaving.

And Han Qian followed closely behind, and also went out of the courtyard and went to the courtyard where Han Ling'er and the others were to inform them

There are eight courtyards of Dongling Academy, each of which has a Dan Building, which is specially used by some alchemist students.

The Danlou of Zhentianfeng is located at about 2,000 zhang. The mountain wall was hollowed out to form a huge hollowed-out mountain, built in it.

As its name suggests, Danlou is a huge attic, wooden building, only ten zhang high, but the vertical and horizontal radius is enough to be two hundred zhang.

The shape is simple and has a strong sense of vicissitudes. Apparently some years.

Han Chen paused in front of the gate for a moment, and then walked in.

There are not many people in the lobby of the Dan Building. After all, even if it is Dongling Academy, the alchemist will not be as valuable as the cabbage on the roadside.

"Little guy, are you here for alchemy?" On the side of the lobby, a gray-robed old man sitting on a futon looked at Han Chen and said lightly.

Han Chen understood. This gray-robed old man should be the person in charge of the Danlou, and he didn't dare to slack off.

"Yes!" walked over, and Han Chen nodded in response.

"Do you know the rules?" the gray-robed old man nodded and asked.

"Human-level Danfang, a month!" Han Chen nodded. He took out a silver sword order from the empty ring and handed it over.

The rules of Danlou, he had already heard from Han Xuan and a few others.

The building of this Dan Tower is not just a simple building, but the power of the academy has attracted the fire from the center of the earth and divided it into this Dan Tower.

With the help of the fire in the center of the earth, not only can the students reduce their consumption when refining the medicine, but also purify the medicinal power of the pill to make it of better quality.

The three hundred Dan rooms are divided into three grades, the three levels of heaven, earth and man, the fire in the center of the earth is the strongest in the heaven-level Dan room, and the human-level Dan room is the weakest.

Of course, there is no free lunch in the world, and if you want to use this Danlou, you need to pay a certain copper sword seal.

The heaven-level Danfang needs five hundred copper sword seals a day, the earth-level Danfang needs three hundred copper sword seals a day, and the human-level Danfang only needs one hundred copper sword seals a day.

Han Chen came over this time, just to refine some five-grade pills and practice his hands, he didn't need a high-level Danfang, the human level was enough.

As for his bronze sword order, it was the last time he bought Bai Han Blood Zhi, what was leftover, plus the bronze sword seal on Han Qingcang and the others, had already been given to Han Chen, so it added up to more than four thousand, and renting a human-level Dan room for a month was more than enough.

"The bronze sword seal will be deducted from three thousand, if you come out earlier, the excess copper sword seal will be returned. And if it exceeds the time, you need to make up for it all, you should know this!" As he spoke, the gray-robed old man returned the Silver Sword Order to Han Chen.

"Hmm!" Han Chen nodded after taking the Silver Sword Order.

"Human-level Danfang No. 67, this is your door number!" Then the gray-robed old man took out another jade plaque and threw it to Han Chen.

The door number is equivalent to the key, and each Dan room has its corresponding door number, and a door number can only open one Dan room.

When the alchemy is over, you need to return the door number when you leave, and of course, you can't take it with you.

Because the gray-robed old man left a breath mark on every door plate, he could sense it at any time, and it was a fool's dream to take the door number away from under his nose.

Han Chen grabbed the jade plaque, clasped his fists and saluted, then turned to leave.

At the same time, he looked down at the jade plate in his hand, the jade card was not big, only half a palm, it looked more like a pendant, the front was embossed with the words 'sixty-nine', and the others had nothing, not even some decorative moire, which was extremely simple.

Han Chen didn't care, put away the jade plate, and walked along the corridor towards the human-level No. 69 Danfang.

After a while, Han Chen stopped, looked at the wooden door in front of him, raised his eyebrows, and took out the jade plaque, which was printed in a gravure on the wooden door.

With a 'crunch', the wooden door opened a gap, Han Chen raised his hand to push it open, then put away the jade plaque and walked in.

Closing the wooden door with his backhand, Han Chen looked around and looked slightly.

This Danfang is seven or eight zhang long, about 20 meters, and the area is not small. There is a futon and a bed inside. It is used for meditation and rest.

In the center of the Danfang, there is a shallow pit with a square circumference of one zhang and a square circle, and there are three-legged imprints in it, which should be the place where the medicine tripod is placed. In the center of the shallow pit, there is a hole more than 30 centimeters in size, and there is a faint fire coming out. It made the temperature in the Dan room a little hotter.

Come to think of it, this is the fire in the center of the earth.

Retracting his gaze, Han Chen walked over, circled around the shallow pit, and then raised his hand and took out the Five Peerless Ding.

With a sound of 'bell', the heavy Wujue Ding fell into the shallow pit, and the thick three-legged ones fell into the three-legged imprint.

"What kind of elixir are you refining?" sat down cross-legged in front of the medicine pod. Han Chen asked in his heart, "Teacher, what do you have to say?"

There were ripples in the air, and Guiguzi slowly appeared.

"With the amount of medicinal materials you have collected in the space now, there are many choices for the five-grade pills that you can refine!" Guiguzi said with a smile: "But after all, you are only just entering the five-grade intermediate alchemist level, so it is better to start from the simple and slowly rise up again!"

With a slight groan, he continued: "Mu Yuandan." Five grades of the next level, for you. It's not that difficult!"

Mu Yuan Dan is an absolute wood attribute healing pill, which is the lower level of the five grades, and the effect is extremely strong, especially for those who practice wood attribute exercises, it is even more miraculous. It is not inferior to the six-grade pill.

Han Chen nodded, and then his mind sank into the empty ring, and he took out all the medicinal materials needed to refine Mu Yuan Dan.

Qingyuan fruit, nine sections of purple incense root, green ginseng, hundred leaf fruit, etc., a total of 58 kinds of medicinal materials. Set aside neatly.

"Let's get started!"

Guiguzi stepped aside, sat cross-legged on the futon, and looked at Han Chendao.

With a slight tap of his chin, Han Chen's palm was raised, and with a 'peng' sound, the dark cyan samadhi true fire burst into flames.

Looking at the dark cyan flames that jumped like elves in his palms. The Samadhi True Fire of the Wood Fire Realm Eight Heavens Peak Realm, refining the Five Rank Pill, I don't know what kind of surprise there will be.

Raising his hand and pressing on the fire mouth of the Five Peerless Ding, the true yuan in his body surged, and the dark cyan flame poured into the medicine tripod like a stream of water, and with a sound of 'Peng', it burst into flames.

When the medicine tripod was warming up, Han Chen quickly recalled the refining method of the Namu Yuan Dan in his heart.

After a while, the inner wall of the medicine pod was burned red, and after the preheating was completed, Han Chen withdrew his left hand, and with a slight wave, one by one, the medicinal herbs flew up from the jade box and fell into the medicine pod.

There are twenty-four kinds of medicinal herbs, exactly half.

Wrapped in flames, distracted and multi-purpose, it quickly refined.

For finding the best hot spots, Han Chen had already been familiar with it, and he found it lightly, and then slowly refined it.

In the past, when Han Chen was still a fourth-grade alchemist, refining twenty-four kinds of medicinal materials at the same time was his limit, not only was it extremely difficult, but it was easier to be distracted, and if he didn't pay attention to it, some medicinal materials would be burned.

However, now, twenty-four medicinal materials were being refined at the same time, and he felt extremely relaxed and without pressure at all.

"Hey, since that's the case, let's refine them all together!"

Smiling, Han Chen directly raised his hand and waved his hand, and put all the remaining twenty-four medicinal materials into the medicine tripod.

The dark cyan flames in the medicine pod surged, and the fifty-eight Chinese medicinal materials were completely wrapped, and the high temperature was pervasive, but it was completely different, which happened to be the best hot spot for each medicinal material.

The refining proceeded slowly.

Two hours later, the essence of the medicinal power of the fifty-eight medicinal materials was completely refined, and the impurities were completely removed, and the essence was extremely pure.

Without hesitation, he pinched the seal knot in his left hand and began to slowly fuse the essence of medicinal power.

The refining of pills mainly depends on the fusion of the essence of medicinal power, and the order of this fusion and the fit of fusion have strict requirements, and there is no room for sloppiness.

Just as the first essence of medicinal power can only be fused with the second essence of medicinal power, the essence of new medicinal power formed after fusion can be fused with the essence of third medicinal power, and so on!

And the integration in the meantime, there are also risks, the slightest carelessness will fail, the more times the fusion, the more difficult it will be to the back.

This is also the reason why the higher the grade of the elixir, the more difficult it is to refine, and the success rate is not high. (To be continued......)