Between the words, Zong Cao also pointed his hand in a certain direction of the treasury, thinking that destroying a good foundation building treasure was also quite impressive to the great elder.

Retracting his gaze from the direction Zong Cao was pointing, Du Rong's attention was more focused on the few mud-like objects in front of him, and he lightly touched the index finger of his right hand, and his intuition felt cold and very flexible.

Poking in with a slight force, his fingers effortlessly pressed a hole into it and didn't get in, it looked like the plasticine he played with when he was a child in his previous life, but the color was more indescribable.

As the finger was pulled out, the dimple under the dot clearly began to rebound, and it didn't take long for the effort to become flat again.

At the same time, Du Rong took out the small knife he carried with him for cutting herbs, the blade was very small, and it was not a magic weapon used by monks. But judging from the blade that shimmered with cold light and was as thin as a cicada's wings, the sharpness of this knife made of ordinary steel should not be underestimated.

He pressed the piece in front of him with one hand, and the whole thing collapsed into a cake under the pressure he had given.

At the same time, his other hand only pinched a small part of it and pulled it outwards vigorously. It's just that this thing that looks soft and collapses to the touch has incredible flexibility.

Now Du Rong's body is nourished by the aura, and the strength of his body is far stronger than the so-called innate martial artist of mortals, even if he does not use the spiritual power to exert the pulling force on the object in his hand at this moment, it is not trivial.

It's just that now if he makes more effort, the limit of this piece of soft object being pulled is only three inches, and it can't be extended in the slightest.

Seeing that there was no way to enter, the knife in his hand was not idle, and cut down the thinnest part that had been stretched.

It's just that this is a soft thing, and the feel of the knife is completely different, Du Rong only feels that the knife in his hand seems to be cut on a smooth crystal surface, and this strange strength is also slid away as long as the blade touches it, and it can't cut half a point at all.

Zong Cao, who was standing behind him, watched with amusement as this disciple was destroying this object in vain, but he couldn't see the smile on Du Rong's face that was gradually forming from his angle.

"Don't waste your efforts, back then, even Uncle Feng tried to slash it with all his might, and with his high-level magic weapon and the derived sword qi, he couldn't help it, let alone the rotten iron in your hand. Zong Ke reminded lightly.

When Du Rong looked back at him, the smile on his face had disappeared, and instead he had a curious face, pointing to all eight mud-like objects in front of him and said, "Uncle Shi, I want all of this thing, I think only the things in this shelf are not marked with value, how much does this piece cost?"

"What, you can't look down on so many treasures in this big treasury, but you want this thing that you don't even know what to use? Master and nephew, I can tell you, it's a good thing that you have a lot of ideas about alchemy on weekdays, but if you don't refine your brain in the right way, the gains outweigh the losses. Zong Cao listened to Du Rong's request in surprise, and in a blink of an eye, he still taught him seriously.

"I want this thing to be useful, you can always tell me frankly, how much do you want to deduct these things from my 50,000 quota, or is my quota not enough? Du Rong replied with a look of course.

Zong Cao didn't answer immediately, but looked at him with a suspicious expression, and the scrutiny on his face became more and more intense. "Tell me first, what do you want to do with this useless thing that we are all trying?"

"Uncle Shi, did you say that this thing is difficult to destroy by any means?" Du Rong was not flustered, and asked him rhetorically first.

I don't know why the kid in front of me still asked about himself, but Zong Cao had no choice but to answer truthfully: "Yes, I said this." ”

"And it will become liquid under long-term high-temperature calcination, and can it be combined with other substances?"

Zong Cao had no choice but to nod his head again to confirm, but he didn't know what kind of medicine was sold in Durong's gourd.

"That's right!" Du Rong's voice suddenly rose a few points, which startled Zong Cao a little, and continued without leaving a gap: "Uncle Shi, do you know where the greatest difficulty of alchemy is?"

Zong Cao was asked one after another, but he also wanted to know what kind of medicine was sold in this kid's gourd, so he simply replied according to his words: "I heard Senior Brother Feng about it, one is to master the proportion of medicinal materials before entering the furnace, and the other is to grasp the heat. Hehe, back then, I just saw that this little guy of yours had two spiritual roots of fire and wood to lead you into the alchemy hall, hehe. ”

"It's still the master who knows all kinds of skills and has a good eye like a torch, so that the kid has today's opportunity, and everything is your credit. Du Rong humbly complimented him, and the old man laughed heartily at his long beard.

Then he said: "Yes, this amount of medicine is one of them, but the focus is still on the control of the flames. Alchemy is a time-consuming and labor-intensive work, and the concentration of divine consciousness for a long time can easily make the Dan master exhausted, as long as an accidentally controlled Dan Fire or Earth Vein Flame flicker, there is a great risk that the pill in this furnace will be scrapped. ”

Zong Cao, who nodded frequently after listening to Du Rong's words, frowned suddenly: "No, I was led astray by your kid, and now you are ready to ask me for this soft strange thing, but now what does it have to do with alchemy?"

A calm smile appeared on Du Rong's face, and he said unhurriedly: "Master don't worry, and listen to my explanation." You said that this thing can turn into a liquid state after being burned at high temperatures and will not be lost, so I have an idea. If this liquid-like substance has a lagging and delaying effect on the transfer of heat, if it is laid on the bottom of the furnace and melted into a liquid form when the bottom of the furnace is heated, will it become a stable barrier, and provide a very high tolerance for the failure of flame manipulation in alchemy?"

This seemingly well-founded remark made Zong Cao suddenly realize, and he vigorously slapped his fist with his hands and said, "What does the master and nephew mean is that if you put this thing at the bottom of the Dan furnace, it is possible to increase the Dan rate of the pill?!"

"Yes, as long as this substance does not volatilize at high temperatures, there are no impurities that affect the composition of the elixir. For example, refining Tsukidan should be able to increase the odds I originally mentioned by another three percent, and it will be under long-term uninterrupted labor. Du Rong said this sentence quite firmly, which undoubtedly dropped a bombshell in Zong Cao's heart.

He dared to say that he had his own grasp, and he already had the blessing of spiritual power, and this Cheng Dan rate was greatly said. Although this idea is indeed worth trying, but the current thing is to take down the thing is the first thing, the big deal is to hone the ability to take the ordinary way of alchemy when refining in the future, and cheating to meet the seventy percent success rate.

But for Zong Cao, the shock to him was incomparable, and the idea that he accidentally thought of could nearly double the yield of this pill that was not a simple refining process, even if Feng Zizhen stopped closing at this time, I am afraid it would be nothing more than that.

His mouth trembled a few times because of the shock in his heart, Zong Cao looked at the face of the young man in front of him who was indifferent, at most a little expectant, sighed, and sighed: "Master Du, I have seen a lot of genius disciples, but with your ability to see the subtleties, you are really a ghost! Alas, if your spiritual root is not so complicated, the path of cultivation will definitely be a prosperous future." ”

"Uncle Shi has an overreputation, it is because he has broken his thoughts all the way to practice that he can have these dissonant opinions on alchemy. Du Rong responded in a low-key manner, but he was amused in his heart, the skin of the physical and chemical theories he learned in his previous life could bluff the old men who had lived for many years in this life.

Although I didn't learn well in my previous life, I don't know if what I said is right or not, but there is no risk of being exposed to it if it is arranged casually here.

The iron needs to be struck while it is hot, and the Baiyang Sect needs a large amount of Zhuji Dan and it will not be able to run, thinking that he threw out this temptation For the elders in the sect, there is no reason to refuse.