After picking the poisonous comfrey, Li Feng immediately found a place without poisonous mist and began to develop an antidote.

Master Poison Xi's alchemy notes recorded a lot of methods for dealing with highly poisonous medicinal materials, and Li Feng had long memorized this notebook and knew how to deal with them

Feng Wu Shuangling stood not far from Li Feng, holding the Purple Flame Phoenix Blood Sword, her eyes swept around, on alert, sometimes several undead monsters appeared, all of them were killed by her sharp.

The tomb was lifeless and old, littered with rotting bones, and the air smelled musty, and one could feel a great deal of oppression when moving around in such an environment.

However, although the tomb door of this ancient tomb has been damaged, there has been no damage to the inside of the ancient tomb, everything is still the same as before, and treasures may be found here, Li Feng is full of expectations for this.

Time passed slowly in the busyness, Li Feng took various alchemy tools and carried out potion experiments, during which he failed many times, but he never gave up.

More than two hours later, with the sound of an explosion, Li Feng walked out of the billowing purple mist, with a victorious glow on his face, "The antidote has been successfully refined!" ”

"Yes, faster than I thought." Feng Wushuang Ling nodded, and finally praised Li Feng.

"This is a top-level potion, trade for a top-level potion." Li Feng said that the antidote to this purple poisonous mist was the top elixir he developed after dozens of failures, it was very precious, and after taking it, he could have immunity to this purple poisonous mist, and he would not be too threatening if he encountered it again in the future.

Feng Wu Shuangling didn't say anything, and traded with Li Feng with a top-grade potion.

The poisoning on his body was finally cleared. The health of the two people finally did not drop again. This saves a lot of healing potions.

"Hey, hey. In addition to the antidote, I also accidentally refined a top-level and killed the top-level boss in the future. Li Feng said with a smile, holding a purple light circulating elixir in his hand, which was a special highly toxic [Extreme Purple Killing Elixir] that he had refined with the poisonous comfrey, and the effect was very terrifying.

This flask poisons the target, stacking a stack of poison every 10 seconds, up to a maximum of 20 stacks. The effect of each stack is to reduce blood by 2000 points per second, and it will continue to exist after death and respawn, and the duration is 20 minutes, and only the antidote in his hand can be removed.

After seeing the introduction of this potion, Feng Wushuang Ling asked, "Can you exchange two for me?" ”

"No, I'm going to keep this potion for my own use, and whoever dares to mess with me in the future, I'll use this potion to deal with him." Li Feng said, putting away the extremely powerful purple killing elixir.

Feng Wushuang Ling glanced at Li Feng coldly, as if she was a little angry. When she was with Li Feng, she was quite emotional. And in front of others, she will always be that emotionally stable and awesome female martial arts idiot.

"Senior Sister Frost Ling, you have to understand that I don't have many extremely powerful purple killing elixirs myself, and there is a competitive relationship between you and me, so it is impossible for me to exchange this elixir for you." Li Feng said,.

Feng Wu Shuangling ignored Li Feng, she walked forward briskly and began to explore the entire ancient tomb.

This tomb is very large, and there are several passages around this circular burial chamber, and I am afraid that there are other burial chambers.

"Let's split up, don't follow me!" Feng Wushuang Ling coldly dropped a sentence, and her body turned into a flame phoenix, flying towards one of the passages.

Li Feng didn't follow, he decided to look for treasures by himself, and whether he could find good things or not depended on their luck.

He first took a closer look at the circular burial chamber, there were some images of demon gods painted on the walls, because the time was too ancient, it looked a little blurry, but the aura was still there.

The tomb was full of piles, I don't know what happened back then, maybe it was fighting for some peerless treasure, the battle was extremely fierce, and none of the bones were intact.

A large amount of purple poisonous mist emerged from the earthen hole in the center of the burial chamber, and it looked deep for some reason.

Li Feng thought about it for a while, and decided to enter this earth cave to explore, find the source of the purple poisonous mist, and maybe be able to find a large number of materials for refining [Extreme Purple Elixir], in that case, it will be much sharper to kill the boss in the future!

He took a high-grade vacating potion, and his body slowly floated down into this soil cave, the diameter of this soil hole is more than two meters, the space is not small, he has now taken the antidote, and has a strong resistance to these purple poisonous mist, a bottle of high-grade healing medicine can last for more than two minutes.

The inner wall of the earth cave is very rough, as if it was directly opened by some kind of violence, and judging from the depth of the earth cave, I don't know how strong the strength is!

"Whoa!" Some vampire bats were alarmed and flew out of the depths of the cavern, and in the darkness, their eyes emitted a strange blood-red glow, which was very terrifying.

These vampire bats live in a purple poisonous mist all year round, and have mutated, not only have strong blood-sucking ability, but also have the ability to release poison, and are a kind of monster that is difficult to entangle.

Li Feng didn't fight these vampire bats, he used the top-level concealment effect to dodge the attacks of these vampire bats, and his body continued to move down.

He noticed that on the inner wall of the earth cave, there were a large number of dried blood stains, which could be preserved for so long, which was enough to show the strength of the blood owner, but judging from the traces, the owner of these blood was probably killed, and there were no bones, and he didn't know what kind of super master had a big battle here.

The further down he went, the thicker the purple poisonous mist became, and his vision was obstructed, producing an extremely powerful poison, and Li Feng had to turn on the Abyss Demon Fire to resist it.

The Abyssal Flame cannot remove these purple poisonous mists, but it can weaken them, burning a portion of them into nothingness.

After drifting down for nearly two hundred meters, Li Feng finally saw the place of the earth cave, and also found the source of the purple poisonous mist.

It was a small pile of broken purple bone pieces, about a dozen pieces, the big ones were the size of a palm, and the small ones were only the size of fingernails, they were like pieces of amethyst, crystal clear, blooming with purple brilliance, constantly releasing purple poisonous mist, and even the surrounding stone walls were dyed purple.

Li Feng landed next to the pile of purple bones and began to study them carefully, this should be a part of the bones of some kind of creature, which was hit by extremely strong violence and shattered.

Based on the analysis of various information, the owner of this pile of purple bones is the leader of a group of powerful monsters, in the ancient war, it was used by some kind of super existence to use a shocking spell, bombarded more than two hundred meters underground, and immediately perished, leaving only a small pile of bones.

This earth cave should be the trace created by that earth-shattering spell, and the purple skeleton is probably an existence with super poisonous attribute power, and it has been dead for such a long time, and it is really terrifying to be able to release such a terrifying purple poisonous mist.

Being able to kill this one, the strength will naturally be even stronger, and Li Feng is now full of curiosity about this powerful existence.

These purple bones are all treasures, a small piece can refine a [Extreme Purple Killing Elixir] potion, Li Feng did not hesitate, and began to use the top-level collection technique on these purple bones.

He looked at the collection progress bar, and was speechless for a moment, it took five minutes to collect the smallest piece of purple bones, and he really didn't know how long it would take for the largest piece.

Of course, these purple bones are of great value, and a little time is deserved.

The space at the bottom of the cavern is very large, and there was nothing else but this pile of purple broken bones.

After more than an hour, Li Feng finally collected these purple broken bones on the ground, a total of fifteen pieces, and it is estimated that he can refine nearly fifty [Extreme Purple Killing Elixirs], which are of considerable value, and can be exchanged for good things with those guild bosses.

Li Feng carefully searched for the side in this bottom space, and found nothing valuable, he took a high-grade vacant again,

This harvest is very large, and in other parts of this mysterious tomb, there may be good treasures that must be found!

Returning to the circular tomb before, Li Feng walked towards one of the passages, Feng Wushuang Ling had taken a passage on the left before, and he had chosen the one on the right.

"What is the origin of this ancient tomb, what happened here back then, and why are so many powerful beings dying here?" Li Feng's heart was full of doubts, this ancient tomb was extremely strong, and there were all kinds of fierce battles in it, but they couldn't make this place collapse, at most, there were some large and small potholes, and they didn't suffer serious damage.

Judging from the traces that remained, the strongest strength was the existence that hit the two-hundred-meter-deep earth hole, Li Feng judged that the strength of this existence should have reached the level of Feng Tiannu, and it might even be a little stronger!

The passage that Li Feng is walking on now is very clean and spacious, no bones have been found, and the purple poisonous mist has not drifted into here, the air is quite fresh, there is a fresh breeze flowing, it seems that in other places, there are exits.

The entire mausoleum was made of a cyan rock, which was incomparably hard, and Li Feng could only leave a shallow trace on it when he struck the Scythe of Death with all his might.

In this way, even if it is a top-level boss, it can only cause minor damage to these cyan rocks, and the ones he saw before are likely to be made by some super bosses.

After walking for about fifty meters, bones finally began to appear in front of me, and there were not many of them, but judging from the quality of these bones, the owners of these bones were very strong in their lifetimes and had the strength of the top boss level.

Among them, there are several humanoid skeletons, all of which are in a broken state, as if they have been smashed by someone with a palm, and the scene is extremely amazing. (To be continued......)