After listening to Lei Xiaotian's words, after listening to Lei Xiaotian's prompt, Clark fell directly into deep thought, and after thinking for a long time, Clark suddenly stood up, and said to Lei Xiaotian with some excitement: "Master...... Master, I know, the most important thing in alchemy is not the flame, but the temperature, whether it is refining medicinal materials or purifying medicinal liquids, the most important thing is the temperature, the flame is just a tool for us to provide temperature, right, master!" After finishing speaking, Clark looked at Lei Xiaotian with a glint of expectation in his eyes, wanting to hear what Lei Xiaotian had to say.

Finally hearing the result he wanted, Lei Xiaotian smiled slightly, took out his medicine tripod directly from the space ring and then said: "You're right, when we refine medicine, the most critical thing is the temperature, if the temperature is too high, the medicinal materials will be directly destroyed, and if the temperature is too low, it will not meet the requirements of alchemy, so controlling the temperature in the medicine tripod is the most important, but what kind of temperature is appropriate?" This point is the most difficult to grasp, different medicinal materials require different temperatures, and even the same medicinal materials of different years, the required temperature is different, and even, in the whole process of refining medicine, the temperature has to change constantly, which requires you to control, think about how you judge when you are refining medicine, whether you should increase the firepower to increase the temperature, or reduce the firepower to reduce the temperature?" Saying this, Lei Xiaotian raised his eyes again and looked at Clark with a smile.

After listening to Lei Xiaotian's question, Clark lowered his head again and thought for a while, frowned and said, "This...... Master, I use my soul power to control the temperature of the flame, and according to the degree of refining of the medicinal materials, I try to adjust the temperature of the flame so that the temperature in the Ding reaches the level I need. When he said this, Clark was very confident, because every alchemist knew to do this, so he was very relieved about this, and he was absolutely confident that he would not say anything wrong.

After listening to Clark's words, Lei Xiaotian nodded and said: "You have a good look, the four-grade pill Wen Shen Pill, I think you are definitely not a stranger! I will now refine it in front of you, you can see what is the difference between it and when you refined, you were able to complete the fusion, but failed in the final purification, I think I should have guessed the reason!" After finishing speaking, Lei Xiaotian directly took out a lot of medicinal materials from the space ring again, and began to refine the medicine in front of Clark.

This kind of four-rank elixir is actually the eight-rank elixir refined by Lei Xiaotian in the material plane, and with Lei Xiaotian's current strength, if he wants to refine such an elixir, it can be said that he can do it at will, and he can refine it successfully.

And the refining time is very short, so Lei Xiaotian directly opened the furnace in the courtyard to refine the medicine, after Lei Xiaotian started refining the medicine, although the refining was only a low-level pill in the god realm, but Clark still looked at Lei Xiaotian refining without blinking, and even the soul power has been monitoring the refining pill of Lei Xiaotian.

Lei Xiaotian first put the medicinal materials into the medicine pod, and then began to refine, all of this is normal, and at this time, Clark's expression is relatively normal, but after Lei Xiaotian has refined all the medicinal materials into medicinal liquid, and after the purification is completed, Clark's expression suddenly changed, and a feeling of sudden realization appeared on his face.

Then there was no wave, Lei Xiaotian successfully refined this furnace of pills very smoothly, and then Lei Xiaotian put away the pills, looked at Clark and smiled slightly and said: "Do you understand, I think this is the reason why your refining always fails!"

After taking the elixir thrown by Lei Xiaotian, Clark came to his senses, and then excitedly looked at Lei Xiaotian's back, knelt on the ground and said respectfully: "Thank you, master, for your advice, I understand, master, I don't think it will be long before I can refine more than five grade pills! I can even refine six grade pills!" After finishing speaking, Clark also kowtowed to Lei Xiaotian.

At this time, Lei Xiaotian had already gone away, and after listening to Clark's words, Lei Xiaotian's voice came, just understand, go find a cultivation room and try it!

It turned out that although Claire had a talent for alchemy, Claire's parents were not alchemists at the beginning, and Claire did not have an alchemist as a master, so she could only rely on a certain alchemist's notes that his father got to teach herself alchemy, and this is the divine realm, and there will be no books that introduce alchemy, so many alchemy skills are unknown, and everything is explored by himself.

Claire didn't know that after the first purification of the liquid medicine, each medicinal material had to continue to be controlled in the best state of its own adaptation, and knew that after the fusion was completed, the next step of purification was carried out.

Therefore, Claire has always been, after purifying according to the relative question, it will cool down and make it the same, so as a result, the viscosity of the various medicinal liquids that have been refined is different, so how can the fusion be complete, so when it is purified for the second time, it will directly lead to the failure of alchemy.

Although it has been tens of thousands of years, Claire has also successfully refined countless pills, of course, more failures, but he still hasn't figured out this truth, so his son Clark is the same.

After listening to Clark's narration, and after learning that Claire was self-taught, Lei Xiaotian guessed the reason why Claire's success rate in refining medicine was not high, so he demonstrated a stool of alchemy in front of Clark.

Clark was too stupid, so he understood the key after reading it, so he confidently said that it wouldn't be long before he could refine the six-grade pill.

And the reason why Lei Xiaotian hurriedly ran to retreat was because when he was demonstrating alchemy to Clark just now, a flash of inspiration suddenly flashed in his mind, as if he had a trace of understanding! And during this period of time, Lei Xiaotian had been uncomfortable for a long time because he had no inspiration, so he felt a trace of inspiration, and Lei Xiaotian immediately chose to retreat, wanting to seize this inspiration and seek an opportunity to break through.

But although there was a trace of inspiration just now, but this inspiration was only fleeting, so Lei Xiaotian actually didn't understand what this inspiration was, so Lei Xiaotian had to retreat immediately, because only in this way could it be possible to grasp this trace of cultivation inspiration that had not easily appeared, so after Lei Xiaotian finished teaching Clark, he went straight to the cultivation room.