Chu Feng was captured by Elder Yin Taishang, and after leaving the Holy Land, he quickly headed towards the Great Mountain Range in the distance, and was finally taken to a hidden cave mansion in the Mountain Range.

The inside of this cave is very spacious, and the entrance of the cave is covered with formations, which are difficult for ordinary people to find. There are many wooden shelves on the side of the cave wall in the cave mansion, on which there are many alchemy books, and in the center of the cave are nine alchemy furnaces.

Eight of the nine alchemy furnaces are placed in a ring, enclosing the largest furnace in the center, and there is a metal pipe connecting the eight furnaces to the central furnace, and Chu Feng smelled the fragrance of medicine as soon as he came here.

"Good nephew, this is the place where Uncle Shi has been preparing for decades, isn't it very good?" Elder Yin Taishang pointed to the Nine Ding Furnaces in the Cave Mansion and said, "Back then, Uncle Shi didn't have much life, so he thought of using people to refine the pill to prolong his life. After searching for decades, he finally found eight people with strong flesh spirit and a large number of cherished elixirs for refining pills, but unfortunately in the end, he failed to succeed in the lack of a major medicine. ”

"Now with your most important medicine, Uncle Shi's decades of hard work can finally have a result, you have made such a big contribution to Uncle Shi, Uncle Shi will remember you after you die, and Uncle Shi will go to the Ding Furnace in the middle now." ”

Elder Yin Taishang's face was full of excitement, the green light flashed in his eyes, he grabbed Chu Feng and walked to the big Ding furnace in the middle, opened the lid of the furnace with a "clang", and then threw Chu Feng into the furnace full of medicinal liquid.

Immediately afterwards, Elder Yin Taishang took out rare medicinal herbs, including 100-year-old Ganoderma lucidum, 100-year-old Tai Sui, 100-year-old snow lotus seeds, 100-year-old ginseng, etc., and kept putting them in the furnace.

After doing this, he pointed at Chu Feng's body, like the fingers of a knife were extremely sharp, and dozens of cuts were made on Chu Feng's body in a "poof" sound, and purple-gold blood flowed out, staining all the medicinal liquid in the furnace.

"Old Bangzi, you use people to refine the pill, you are crazy, even if you succeed in prolonging your life, you will not die well in the future!" Chu Feng gritted his teeth, he had been guarding against Elder Yin Taishang, but he still couldn't escape this catastrophe, and now that he was in the Ding Furnace, he was about to be refined into an elixir.

"Hey, hey, hey, you can scold as much as you like, after seventy-seven and forty-nine days, Uncle Shi's elixir will be completed, and it will be able to increase the lifespan by hundreds of years at that time!" Elder Yin's face was full of excitement, and he closed the furnace lid with a "clang", and made a divine pattern, reinforcing the seal around the furnace lid, and then lifted the stone slabs under the nine Ding furnaces, and the raging flames rose from the ground.

This cave is very special, because it contains earth fire, and it is precisely when Elder Yin Taishang discovered the earth fire here, he dug a cave here and used it for alchemy. Earth Fire Alchemy can increase the success rate of alchemy, and it is also possible to refine a better grade elixir.

"Goo-goo-goo......"

Under the boiling of the earth fire, the medicinal liquid in the nine major Ding furnaces all boiled, especially the Ding furnace where Chu Feng was, the medicinal liquid in it boiled the loudest, and all the medicine in it was the rarest elixir.

Elder Yin Taishang sat in front of the Ding Furnace, closed his eyes and waited quietly, thinking that he would be able to refine the coveted Life Extension Pill in seventy-seven hundred and forty-nine days, and his mood was so excited that he couldn't help himself.

The medicinal liquid in the Ding furnace was boiling, Chu Feng was trapped in it, the purple-golden blood kept flowing out, he wanted to stop the bleeding and repair the wound, but found that under the erosion of these medicinal liquids, the wound was actually difficult to heal.

"What should I do, am I really going to die here?" Chu Feng was very anxious in his heart, he couldn't die, there were still many things waiting for him to do, let alone make his mother and Qingxue sad.

The temperature of the medicinal liquid in the Ding Furnace was extremely high, it was as hot as boiling molten iron, that is, Chu Feng's body was strong enough, and if he was replaced by someone else, he would soon be melted away.

The wounds on his body kept flowing purple gold blood, which could not be healed, and the blood was lost too much, making Chu Feng feel that he was gradually becoming weak, and if he continued like this, he would definitely die, and he was almost desperate.

Just when Chu Feng's mind began to be a little confused, a flash of inspiration suddenly flashed in his mind, and the whole person suddenly sobered up. Looking at the boiling liquid and the rare elixirs that floated, he thought of a way to survive.

Chu Feng opened his mouth and drank the medicinal liquid, and the essence contained in the medicinal liquid immediately filled his body, and he hurriedly ran the "Hedao Immortal Sutra", and while frantically refining the essence, one hundred and eight acupuncture points were also absorbing the essence.

"Boom!"

Chu Feng's divine sea erupted with a sound like a long river, which shook the furnace ding slightly, which made Elder Yin Taishang, who was sitting in front of the furnace ding, suddenly open his eyes, and the light in his green eyes burst out, and the wrinkles on his face trembled.

"If it is really a peerless medicine, the old man is fortunate to get a powerful ancient blood physique, and in just two days, there is a strange sound!" Elder Yin Taishang rubbed his hands together excitedly, and said to himself: "I heard that many magical things will happen when the superb elixir is refined, there will be abnormal noises, and there will even be thunder, it seems that the old man has the hope of refining the superb longevity pill this time, and its effect will be doubled!"

When Elder Yin Taishang was excited, Chu Feng drank the medicinal liquid in the furnace and frantically refining at the same time. The essence in these medicinal liquids was even purer than the spiritual liquid supplied in the Holy Land, and the essence contained in the medicinal liquid of most of the furnaces was enough for Chu Feng to break through to a realm!

However, Chu Feng was still very careful and tried his best to suppress the voice in the Divine Sea, so as not to make Elder Yin Taishang suspicious. Although he could hear Elder Yin Taishang talking to himself, if this kind of movement continued, I was afraid that it would be counterproductive, and if Elder Yin Taishang opened the furnace lid out of doubt, everything would be over.

The time for refining the elixir was only seven hundred and forty-nine days, and during this time, the time was still a little tight if you wanted to refine the liquid medicine and all the precious elixirs. In the face of a strong person like Elder Yin Taishang, even if he takes advantage of his surprise and sneaks attack, he may not be able to kill him, so the higher the realm, the easier it is to succeed, if he can't kill it with one blow, the consequences will inevitably be unimaginable.

The time of ten days passed quickly, and every once in a while, there would be a sound like a long river rushing in the furnace, which made Elder Yin Taishang more and more excited, and he felt that this time there was hope to refine the best elixir, even the best elixir.

Half of the medicinal liquid in the furnace was drunk by Chu Feng, refined into his own essence, and condensed the fifth divine sea, the yin and yang gossip diagram was manifested in the one hundred and eight big holes, and the fifth ancient seal on the metal plate was also shining.

The Yin and Yang Bagua diagram continued to rotate, and the seven directions began to dim, and finally the remaining Xun position still flashed with light, and many ancient talismans appeared, constantly flying towards the Dantian Shenhai, and rising and falling in the sky above the Shenhai.

The ups and downs of Chu Feng's Divine Sea began to interweave and evolve, and a verdant desolate forest gradually appeared, with green grass and ancient trees, with a thin layer of vitality.

In the Divine Sea Vision World, the branches of those ancient trees could stretch and change at will, waving like long whips, under Chu Feng's mind control, they were simply like arm-commands, and the most important thing was that those branches had divine patterns entangled, making them extremely tough.

After the evolution of the fifth Divine Sea Vision, this Yimu Divine Sea has majestic vitality, which can show a variety of means when facing the enemy, and can also replenish Chu Feng's life essence.

In this way, a few more days passed, and the fifth fountain of life at the bottom of the Divine Sea was completely derived, and the whole body was connected to the Divine Sea through the guò spring, and the sound of a landslide and earth cracking erupted, shaking the furnace and trembling.

"Vision! Another vision!" Elder Yin Taishang trembled with excitement, and almost couldn't help but want to open the lid of the furnace to take a look, but he didn't do it in the end, and said to himself: "No, I have to hold back, don't open the lid when refining, otherwise I will lose all my efforts, it seems that this time I can really refine a superb elixir!"

Listening to Elder Yin's words, Chu Feng in the furnace couldn't help but sneer, this old man thought it was a vision during alchemy, but he didn't know that it was the movement that occurred when he was cultivating. Anyway, even if he couldn't attack and kill Lao Bangzi in the end, at least he failed to refine the medicine, and Chu Feng felt a bad breath in his heart.

From the fourth heaven to the fifth heaven of the Divine Sea Secret Realm, Chu Feng needed at least six hundred bottles of spiritual liquid, which was a huge amount of resources for him, and it was difficult to get hold of it in a short time. But in this Ding furnace, it broke through so lightly.

Next, Chu Feng began to take those rare elixirs, first of all, Ganoderma lucidum, and then people participated in snow lotus seeds, etc., as long as it was elixir, he ate it into his stomach.

These spiritual liquids were very rare, all of them were more than a hundred years old, and the essence contained in them was very pure and majestic, which was simply a cultivation resource that Chu Feng sent to his mouth.

If Chu Feng wanted to break through from the Fifth Heaven of the Divine Sea Secret Realm to the Sixth Heaven of the Divine Sea Secret Realm, the resources needed were three times as many as before, that is, nearly two thousand bottles of spiritual liquid, such resources could scare ordinary cultivators to death, and under ordinary circumstances, it was almost impossible to get so many resources in a short period of time.

But now it is different, these lingzhi, ginseng, snow lotus seeds, etc. together are enough to be worth two thousand bottles of spiritual liquid, after all, these medicinal materials are very old, and they are very rare, they are collected by Elder Yin Taishang for many years.

Under the massive elixir resources, the essence in Chu Feng's dantian continued to increase, but in just twenty days, the sixth divine sea was condensed, and the yin and yang gossip diagram in the big cave rotated, and the seven directions were dimmed one after another, and in the end, only the shock position was still flashing.

The earthquake is thunder, and Lei Gang is righteous and domineering. When the sixth divine spirit ancient seal appeared in Chu Feng's primordial spirit, many talismans on the earthquake position were manifested, imprinted in the sky above the divine sea, and constantly intertwined and evolved, gradually emerging a boundless thunder sea, the silver thunder sea crackled and flickered, emitting a huge roar.

"Boom!"

There was a terrifying sound of thunder and lightning intertwined in the furnace, and the entire furnace was shaking violently. When Elder Yin Taishang saw such a picture, he was so shocked that he almost jumped.

"Vision! Another vision! Now that nearly forty days have passed, and the time for alchemy is about to come, the sound of lightning and thunder sounded in the Ding Furnace, this must be the prelude to the imminent refining of the superb elixir! I didn't expect that the old man would be able to refine the superb longevity pill in his lifetime, it is really a heavenly old man!"

Elder Yin Taishang was full of excitement and excitement, crying and laughing, like crazy, he stared at the furnace ding, if it weren't for the alchemy time had not yet reached seventy-seven forty-nine days, I am afraid that he would have been unable to lift the furnace lid long ago.