Chapter 4494: Perfect control

On the top of the Nadan furnace, there are a total of thirty-six transparent beads, and these beads are colorless and transparent under normal circumstances. And once the fire starts to make alchemy, when the temperature in the alchemy furnace rises to a certain height, a bead will light up. The higher the temperature in the furnace, the more beads will light up!

This is equivalent to having a thermometer with only thirty-six graduations in the pill furnace.

Although there are only thirty-six scales, it is basically enough for most alchemists!

Because...when a bead is lighted up to the extreme and then lighted up the next bead, you can also divide it into 10% to 10% by the brightness of the bead. If it is subdivided in this way, then the "thermometer" on the pill furnace is equivalent to three hundred and sixty graduations, which is already quite fine.

Of course, it is still quite difficult to distinguish whether a bead is 30% bright or 40% bright. This still requires a certain amount of experience.

And if this subtle temperature identification is not very clear, it may not cause the failure of alchemy, but... the quality of the refined pill will probably not be very high!

Lu Shan didn't have any experience before, and naturally he couldn't tell exactly what a bead looked like.

Therefore... he didn't rush to put in medicinal materials, but when the fifth bead on the pill furnace lighted up, he began to carefully adjust the temperature of the pill furnace.

He repeatedly allowed the fifth bead to light up, and kept warming it slowly until it was so bright that even when the sixth bead began to light up slightly, he began to lower the temperature of the flame again to make the fifth bead. The beads dimmed slowly again!

After doing this over and over six times, he could finally accurately determine the brightness difference of a bead, and then the temperature of the pill furnace was firmly fixed to the level of four beads and seven.

The so-called four beads and seven, that is, the first four beads must all be lit, but the fifth bead can only be lit up to 70%!

For the newcomer alchemist...controlling the temperature is the most difficult, even if you can find the temperature at the beginning, but you want to control the ground fire to stabilize at the same temperature, so that the temperature of the pill furnace will not change again. That's not so easy to do!

After all... after the pill furnace temperature reaches a certain level, it does not mean that you can keep the flame at this level... If you continue to maintain the existing flame temperature, it will only continue to increase the temperature in the pill furnace! So after the temperature reaches the standard, it is necessary to slowly reduce the temperature of the flame!

But the temperature of the flame cannot drop too fast. Once the temperature of the flame drops too fast, the temperature in the pill furnace may also drop too much, which will also affect the purification effect of the medicinal materials. How about... Alchemy masters above the alchemy master, basically, can not completely purify the effective ingredients in the medicinal materials, and must add 30% more to the materials of the elixir!

However, Lu Shan's control of the flames can be said to have truly reached the level of an arm's length. Although he is not using his own true essence fire, but with his affinity and understanding of the elements of the fire attribute, he can perfectly control the flames generated in the void by relying on the Void Regeneration Method alone!

And let this void flame burn completely according to his will, which is much more obedient than the true essence fire, and does not need to consume his own true essence, let alone this kind of refining time does not need to be too long His low-level pill, even if it is the kind of pill that can only be successfully refined for a few days and nights, he can completely use the ground fire and only use the trick of creating flames in the void!

Of course, the premise is that he must have a sufficient and continuous supply of heaven and earth aura around his alchemy environment!

After all, even in this different world, the law of conservation of energy still needs to be obeyed. Even if he can create the effect of the void flame by using magical means, the flame will continue to burn, it must be It consumes energy!

And this energy is not provided by Lu Shan's own true essence, it can only automatically absorb the aura of the surrounding heaven and earth! If it is in a place where spiritual energy is poor, then his Void Life Flame will not be able to play at all!

Of course, if it is really in a place where the aura is exhausted and needs to maintain the void flame for a long time, he can also throw in the spiritual stone to consume it. Even if there is no formation method to extract, the general spirit stone will not emit aura on its own... Even if there is aura, it is an extremely slow process, but... Lu Shan can let the flames directly burn the spirit stone, so that it can be completely According to his wishes, energy was continuously extracted from the spirit stone.

But now, the place where this alchemy hall is located is naturally quite aura, and... Lu Shan is used to refine the first-level pill at this moment, and the flame needed does not need to be too strong, and the aura that consumes not much, just depends on the surrounding area. The free spirit is enough to support.

Feeling that the temperature in the pill furnace had been completely stabilized, and there was no slight fluctuation, Lu Shan only gently pinched the technique... Then he saw the beast head carved on the top of the pill furnace cauldron suddenly open his mouth. At the same time... Lu Shan's heart moved, and a breeze blew by, and the six and a half medicinal materials named Dongqianzi on the case table next to him have already volleyed into the air, flying into the beast's head accurately. In his mouth, he fell into the pill furnace.

"brush-"

After the Dongqianzi fell into the pill furnace, the beast heads on the pill furnace automatically closed their mouths, and no trace of heat would escape. Then after a few short breaths, I saw the other end of the tripod cover carved The head of another strange beast opened his mouth in the same way... with a "poof", a burst of black smoke came out!

It was surprisingly that after the essence of the six and a half Dongqianzi was extracted, the remaining impurities and residues were removed from the furnace in this form!

Soon after... I saw that the color of the flame under the pill furnace changed slightly, and the blue gradually became deeper, and the beads on the pill furnace had four beads and seven that were originally lit, becoming five beads and three.

Then the head of the beast in front of the pill furnace spoke again, and at the same time there was a breeze that lifted up seven green grasses and flew over and plunged into the beast's mouth...

In this way, Lu Shan carefully purified a variety of different medicinal materials with flames of different temperatures. The process was neither fast nor slow, as rigid as an old-fashioned clock.

However, in a short period of time, all the 12 medicinal materials needed for the Qingxin Pill had been purified by him, and then he began to enter the next link... fusion!

According to the records in the pill code, every mature pill prescription has been tempered and tempered, and when every medicinal material is put in and how to extract its essence, there is a strict and accurate model. Of course... if you want to achieve the effect in the Dandian, you need to pinch the temperature of the flame and the time to be extremely accurate, and there can be no deviation of the slightest, otherwise it will be the result of a slight difference and a loss of thousands of miles!

And as long as the purification of each medicinal material is perfect, you can just get the perfect fusion ratio of the various medicinal essences in the pill! This point is quite critical...