Heat-etched leaves are a very rare material, although they are still a little less rare than the extremely precious natural treasures of the devil's bite gold, but its difficulty in finding them is quite famous.

It's just that hot etching leaves are basically difficult to use for both Dan masters and instrument masters, so although they are difficult to find, their value is not very large.

The hot-etched leaves that were now taken out by "Lu Xin" were asked for by him from Guihou Jiang. And the reason why he wants to take out the heat etched leaf now is because he has to use the heat etched leaf to melt the devil's bite gold.

Heat-etched leaves have a very strange feature, that is, in ordinary conditions, whether it is blistered with water, chopped with a knife or axe, or iced, it is no different from ordinary leaves, almost like ordinary things.

However, if the heat-etched leaf encounters flames or high temperatures, it will quickly burst out with extremely terrifying power. This kind of power is faintly similar to the scorching power of flames, but it is not really scorching, but a kind of corrosion.

This kind of corrosion, for the first period of time, can be regarded as pure corrosion, and does not cause the corrosion of the object to deteriorate, except for its strength. However, if it takes a long time, the corrosive power will deepen, and the corroded thing will no longer be able to maintain its original properties.

"I'm glad I brought this with me, but it's a real hassle to use it. Looking at the leaves in his hand, "Lu Xin" was a little helpless.

Originally, he brought hot etching leaves, which he specially prepared for smelting ghost bite gold. However, this preparation was just in case, and he thought that he should not be able to use it. Who would have thought that it would be used directly now, which is really a bit dramatic.

However, as "Lu Xin" said, it is definitely not a simple matter to use heat etching leaves. Because of the strange characteristics of the heat-etched leaves, "Lu Xin" can only rely on its power for a short time. During that time, as long as the Devil's Bite Gold was successfully melted, the next step he had to do was to find a way to separate the corrosive liquid from the Devil's Bite Gold liquid. Because if you don't do this, once the corrosive power of the heat etching leaves deepens, the devil's bite gold will deteriorate.

This is an extremely delicate manipulation. But if you want to cross the primary stage of the instrument immortal and learn to be so fine, it is also a matter of course.

Without hesitation, after "Lu Xin" took out a lot of hot etching leaves, he calmed down, and then threw three pieces into the Dingzhong.

The green leaves entered the ding, and they were immediately roasted by the high temperature of the outflow fire in the middle of the ding. Instantly, the scarlet dots on the green leaves began to glow slightly, and then gradually grew larger.

This kind of growth is quite strange, as if a drop of ink is dotted on the rice paper and then begins to infect. As a result, we saw that the little scarlet dots were getting bigger and bigger, and the more scarlet there was on the leaves, the less green they were.

It wasn't until the whole green leaf had turned scarlet that there was a soft "bang" sound, and the heat-etched leaf could no longer maintain its original shape, but turned into a puddle of scarlet liquid.

"Lu Xin", who was standing next to the ding, saw all this in his eyes, knowing that now was the time when the power of heat erosion leaves should be used, so without the slightest hesitation, he guided those scarlet liquids towards the ghost bite gold.

The scarlet liquid rushed to the reddening places on the surface of the Ghost Bite Gold, and this time, even with the hardness of the Ghost Bite Gold, it finally could no longer maintain its original state.

As a result, I saw that on the parts of the surface of the ghost bite gold that were stained with scarlet liquid, drops of red liquid began to condense and form, and then dripped into the fire outside the sky.

"It really works!" Looking at the dripping liquid, "Lu Xin" finally breathed a sigh of relief in his heart. If he couldn't even handle this initial step, how could he still cultivate the Heavenly Stone Sword?

Only, soon, the next problem came again. The red liquid that drips and is suspended in the Dingqi Ding certainly contains a considerable amount of ghost bite gold, but it also contains some liquid from hot etching leaves. And now, if "Lu Xin" doesn't separate these two red liquids as soon as possible, once the power of the hot etching leaf liquid deepens, the ghost bite gold liquid will inevitably be truly corroded and deteriorated.

As a mature refining master, "Lu Xin" naturally took this into account a long time ago. I saw him pointing at the very small ball of red liquid in the ding, and immediately the red liquid jumped up from the ding, and it was also free from the scorching fire outside the sky.

At the moment when the red liquid flew into the air, "Lu Xin" sent out a blast of cold air and attacked it. Suddenly, the temperature above the liquid plummeted, and it was seen that green and gold soon appeared, which was a sign that the ghost bite gold and heat etched leaves were about to return to their original state after getting rid of the heat.

Of course, as the color changes, the liquid also has the meaning of returning to a solid state. It's just that "Lu Xin" can make the liquid turn back into a solid? So in this extremely short period of time, his spiritual power was everywhere, and he completely eliminated the green part of the liquid, leaving only the golden part. Then, before the liquid could be transformed into a solid, the golden liquid fell back into the Monkey Dome.

As soon as the high temperature arrived, the pure golden liquid began to slowly turn red again, and naturally it was impossible to turn solid again.

"It's done!" Looking at the pure golden liquid in Dingzhong, "Lu Xin" knew that it was the pure ghost bite gold liquid that he had managed to get out with great difficulty, and it was also what he really needed.

Wiping the sweat from his forehead, "Lu Xin" was slightly panting. And when he looked at the ghost bite gold liquid in Dingzhong again, which was probably only four or five drops in total, the excitement on his face couldn't help but turn into a bitter smile again.

In the previous series of operations, "Lu Xin" can be said to have made a lot of effort. At that moment, not only was his energy highly concentrated, but the control of spiritual power and flames had to be meticulous step by step, and he could not make the slightest mistake. In this way, the consumption and burden brought to him are really not small.

And after all he tried, all he got was such a small amount of ghost bite gold liquid, which was probably not even one percent less than what he needed to forge a sword. So how many times does he need to repeat the series of actions he just had?

"At least you have to melt off a third of the whole ghost bite gold, otherwise when the time comes to actually forge the sword, the main ingredient is not enough, so won't it be over?" This time, casting a sword is probably much more difficult than letting him fight. If he continues like this, he will have to spend more than a month just smelting the ghost biting gold.

After rummaging through the storage bag for a while, a pile of small jade bottles soon appeared on the ground beside "Lu Xin". These jade bottles look exactly the same, and the number is no less than three hundred.

Picking up a jade bottle, "Lu Xin" poured out a warm jade-like yellow pill from the inside, and took it down. Suddenly, his slightly tired face eased a lot, and his spirit improved a lot.

There is actually only one kind of elixir contained in so many jade bottles, and that is the kind that can quickly restore spiritual power and refresh the spirit.

This time, "Lu Xin" prepared so many of these pills because he had already anticipated the worst. Therefore, he prepared a large number of recovery pills, which was to fight a protracted battle in this fierce ghost forest.

Moreover, after all, this elixir is a good thing that has been refined, and it contains much less impurities and unclean things. Therefore, not only is the energy inside it more powerful than that of the magic crystal, but also the risk is smaller, and it is not so easy to produce magic obstacles.

After all, for such a thing as a magic barrier, the current "Lu Xin" must attract twelve points of attention. Otherwise, if he hadn't finished forging the sword, he would have fallen into the illusion first, and if the sword was destroyed, more accidents would follow.

In this way, as soon as "Lu Xin" stayed in the center of the Fierce Ghost Forest, he easily consumed a whole month's time. During this month, although he was not disturbed in any way, he continued to repeat the action of melting and refining the Devil's Biting Gold Liquid every day. If this continued, he was not only extremely consumed, but also mentally weakened.

Fortunately, he persevered and did not make a single mistake. Therefore, after this month, the ghost bite gold has been reduced by about three or four percent, which is a lot thinner than the original. The ghost bite gold liquid suspended in the Fox Ding is already the size of a baby's head.

Such a number, according to the estimation of "Lu Xin", should be basically enough.

wiped the sweat from his forehead, but "Lu Xin" couldn't shake off the embarrassment and fatigue all over his body. He stretched out his hand, and the thinned ghost-biting gold flew out of the fox. After a little trick to lower the temperature, "Lu Xin" put it away.

Then, "Lu Xin" let the ghost bite gold liquid be suspended in the fire outside the sky, and began to meditate cross-legged regardless of it.

"Lu Xin" had to rest for a while this time, because the ghost bite gold had been smelted, and he needed to carry out the second step of cultivating the Heavenly Sword.

As the saying goes, if you want to hurry, you can't reach it, "Lu Xin" understands this truth. So if he didn't take a good rest after a month of hard smelting, he couldn't guarantee that the second step would go without any deviations.