Hearing Chief Shi's command, the guards didn't say much, they all took a few steps back, and then quickly disappeared into the darkness, no different from Chief Shi when they first came, if they didn't use their divine sense, they wouldn't have been able to find out where this group of guards was hiding.

In short, there is a heavy security here, there is a stone manager by his side, the entrance of the cave is sealed with a protective formation, there is a team of guards next to the formation, and there is the ancestor of the Shi family outside.

Chief Shi re-sacrificed the array plate in his hand, closed the protective formation, and then led everyone to continue to fly into the depths of the cave.

They didn't feel it until they went deep into the interior of this cave and felt the surprise of this cave, and Chief Shi took the five Dan Masters and flew for more than half an hour to reach the destination. The distracted monk flew continuously for more than half an hour, although it was not flying at full speed, but the distance was at least two or three thousand kilometers, which showed how deep this cave was, and it was not an exaggeration to say that this location was the center of the earth. Such a deep cave cannot be seen by manpower, it should be the creation of nature.

Maybe it's because it's close to the earth fire, and the temperature around them is extremely high, but fortunately, everyone is a distracted monk, and they are experts in playing with fire like Danshi, and the surrounding heat doesn't have much impact on them.

At the end of the cave was a huge stone gate, and when the stone door was opened, a wave of heat immediately hit the face, pushing everyone back several steps involuntarily. Wait for the heat wave to dissipate, revealing a large empty hall inside.

On the stone wall on the side of the hall, there are many rooms excavated, which should be places where the stone family places materials, utensils, or temporary rest. In the middle of the hall is a huge Dan furnace. The Dan furnace is brilliant, the clouds are steaming, it is not ordinary at first glance, and what is even more peculiar is that the Shi family does not know what method is used, and the Dan furnace is always floating in mid-air, motionless.

Under the Dan furnace, according to the direction of the five elements, five holes with a square circle of one zhang were excavated, and in each hole, the earth fire rose, scorching the Dan furnace above all the time. And among the five earth fires, there is a purple flame in each, and everyone who is a Dan master knows that this purple flame in the earth fire is the polar spirit fire.

Polar Essence Fire is a kind of natural flame comparable to the Dan Fire of the Divine Monk, if it is used for alchemy, it will be of great help to the Dan Master, saving the steps of the Dan Master to output the Dan Fire, allowing the Dan Master to devote more energy to refining the Dan Fire and improving the quality of the Dan Medicine. A cave mansion with polar essence fire is the dream of many Dan masters, and they can't imagine that the Shi family has such a treasure land.

Originally, Qingfeng was the same as everyone else, and after entering the hall, he was attracted by the Dan furnace and the polar spirit fire, and was about to take a closer look, but he suddenly felt a trace of anxiety in his heart, which made him a little uneasy. Qingfeng turned his head and looked around, but he couldn't see anything special, and several other Dan masters were also observing the Dan Furnace and the Polar Spirit Fire, and there was nothing abnormal.

What's going on? Could it be that there is some unknown danger in this underground cave? It seems a little impossible, this is the important place of the Shi family, the Shi family doesn't know how many times they have sent people to explore, and the source of any danger has already been dealt with; could it be that he has been refining pills too tired some time ago? It is also unlikely, the little pill he refined in the Medicine King Pavilion is nothing at all, not to mention that he only spends a little time refining pills every month, and spends the rest of his time resting and cultivating; or is it that his relatives are in danger? Then it is even more impossible, whether it is Qinglong Mountain on the earth or the amount of mountain on the Yellowstone Star, they have always been calm, how could it be that there was an accident as soon as they left? Not to mention that the distance between the two places is so far, even if there is danger, it is impossible for him to sense it.

Qingfeng shook his head and expelled the trace of uneasiness in his heart, maybe it was because the security here was too tight, which caused a trace of anxiety in his heart, he had always been free and easy, and suddenly came to the depths of the earth, which made him uneasy, right?

After everyone got used to the environment in the hall, Chief Shi raised his hand, and the five jade slips flew into the hands of the five Dan masters. Shi Zongguan: "What is recorded in this jade slip is the steps of refining the five-color mending pill, our Shi family only found three kinds of heaven and earth spirit roots, namely ambergris grass, phoenix blood flower and unicorn wood, and the other two materials are slightly inferior substitutes." Therefore, we decided to use those three kinds of Heaven and Earth Spirit Roots to refine the Three-color Replenishing Heaven Pill first, and then add the other two alternative materials after the refining is completed, so as to improve the quality of the Three-color Replenishing Heaven Pill to five colors. ”

Ambergris, phoenix blood flowers, and unicorn wood? This is a legendary fairy grass, and I didn't expect to be able to see it with my own eyes today. Not only Qingfeng, but even the other four Dan Masters who were already accustomed to seeing all kinds of spirit grasses couldn't help but gasp, this Shi family really deserved to be the super family of Huangshi Xing. When they heard that the Shi family had found the three kinds of heaven and earth spirit roots, the five Dan masters were already fully mentally prepared, but they didn't expect that what the Shi family finally found was ambergris grass, phoenix blood flower, and unicorn wood, which were three extremely high-ranking immortal grass-level elixirs.

Ambergris is said to only grow in the dragon's den, in the place where the dragon sleeps, because of the perennial infiltration of ambergris, a kind of fairy grass that eventually grows. It's very simple to say, but what is a dragon? It is an ancient divine beast, that is a species that only exists in the fairy world, and now the cultivation realm is not a dragon, not even a demon beast with a trace of dragon blood has never heard of it, let alone ambergris.

The situation of the phoenix blood flower is similar to that of ambergris, when the phoenix is injured or nirvana, a large amount of phoenix blood drops on the ground, and then absorbs the aura of heaven and earth, and finally a small flower is generated by chance. The real phoenix blood flower has the effect of the flesh and bones of the living dead and the rebirth of nirvana, and I can't imagine that the Shi family actually used it to refine a three-color mending pill.

As for the unicorn wood, it is even rarer, it is a kind of spiritual wood that grows on the corpse of the unicorn, that is to say, a unicorn must die first, and after his corpse is corrupted, the unicorn wood can be slowly derived.

In terms of the current ability of the cultivation realm, it is impossible to obtain the immortal grass generated by the real ancient divine beasts, and these three heaven and earth spirit roots of the Shi family are at most produced by the spirit beasts containing the bloodlines of the three divine beasts. But even so, these three kinds of heaven and earth spirit roots are rare treasures, and any one released can make the monks grab their heads.

But no matter how good the thing is, it's not your own, so let's take a look at how this three-color mending pill is refined. Qingfeng took out the jade slip given by the stone manager, and used his divine sense to sweep all the contents of the jade slip, and soon became familiar with the steps of refining the five-color mending pill.