"Boom —"

The moment the Earth Spiritual Fire entered the red cloud pill furnace, it was like igniting a thousand tons of explosives. The entire pill furnace began to boil, like a primordial beast roaring in the eternal wilderness.

"The Earth Spirit Fire is indeed overbearing. Fortunately, this Red Cloud Pill Furnace is a low-grade treasure; otherwise, just the impact of the flames from the Earth Spirit Fire would have been enough to shatter it." Chen Feng instructed in his heart, but his eyes never left the Red Cloud Pill Furnace.

Within the span of a few breaths, the red cloud pill furnace had finished heating up. The entire pill furnace was like a miniature sun, emitting a tremendous amount of heat. All sorts of fire elements filled the room, causing the temperature in the room to rise by a lot.

Shen Chen, who was in the midst of comprehending, frowned. Even though his eyes were closed, he could vaguely feel the joy in his expression. The fire energy from the Divine Flame of the Earth's Core gave him, who had just started reading the world, a feeling of satisfaction.

Chen Feng did not have the time to care about the progress of his alchemist. At this moment, he was solemnly looking at the various medicinal ingredients floating in the air.

"With my current strength, refining a Rank three Great Recovery Pill is still somewhat difficult. However, with the Earth Spiritual Flame, I believe that there shouldn't be any mishaps." Chen Feng muttered to himself.

"Stupid …"

With a light shout, Chen Feng suppressed his emotions and his thoughts became extremely clear. This was a habit that he had maintained throughout the ten thousand years of refining pills. Only with an extremely clear mind could there be no mistakes in this tiny process, greatly increasing the success rate of concocting pills. From time immemorial, there have been countless examples of a single misstep.

Under the control of Chen Feng's Quintessential Essence, the lid of the Red Cloud Pill Furnace opened with a loud bang. A crimson flame shot out like a demon made of fire, jumping around inside the pill cauldron while baring its fangs and brandishing its claws.

"Red Maple Grass, go —"

Chen Feng extended his finger and a crimson herb was thrown into the Red Cloud Pill Furnace. In the blink of an eye, the original body of the medicinal plant turned into a scarlet red liquid. This was the essence of the medicinal plant.

The scarlet red juice was produced, and a faint stench emanated from it, as if it was a rotten fish that had rotted for ten days to half a month.

However, Chen Feng's expression did not change in the slightest. It was as if he did not smell this aroma at all. His mind was completely immersed in the medicinal ingredients before him.

"Moon Breaking Grass, go!"

Under Chen Feng's control, a silver-white herb shot out rapidly and turned into a liquid medicine within the Ground Spirit Fire in an instant, fusing together with the scarlet red liquid.

A strange thing happened. When the two streams of medicinal liquid fused together, the originally stinky smell actually disappeared. Instead, it gave off a faint fragrance, making Chen Feng feel as if he was strolling in a garden in spring.

Chen Feng's eyes inadvertently glanced at the windowsill, then he controlled the medicinal herbs one after another and flew them into the crucible.

Outside the window, Master Lu and Master Zhu were watching Chen Feng concoct pills with rapt attention. Their eyes had long since become round, filled with deep astonishment and admiration. They were attracted by the earlier stench, but were then attracted by Chen Feng's skill of concocting pills. Be it Chen Feng's purification of the herbs or his control over the temperature of the fire, they were deeply impressed. Although Chen Feng had inadvertently glanced at them just now, letting them understand that Chen Feng already knew that they were peeping from the outside. However, his obsession with alchemy made these two old men want to continue peeping even if it meant that they would rather be peeping from the outside.

Time passed second by second. More than half of the pills floating in front of Chen Feng had disappeared, leaving behind only a blackish-purple herb.

"Mysterious Yin Grass. When I obtained you that day, I originally wanted to use you to refine a batch of Mystic Yin Pills to assist me in breaking through to the Origin Condensation stage. However, by chance, it didn't work. At this moment, you can be considered to be at the best location to refine the Three Revolving Great Pill. " While Chen Feng was in his thoughts, he waved his hand and the purple black Profound Yin Grass entered the pill furnace. Finally, it turned into a stream of medicinal juice and entered the essence within the pill furnace.

With the addition of the Profound Yin Grass' juice, the juice seemed to have sublimated. Its color suddenly became bright, and a faintly discernible energy began to ripple within the juice.

At this point, the purification and fusion of the medicinal ingredients had already been completed. Chen Feng waved his hand and the lid of the Red Cloud Pill Furnace closed with a loud bang.

Chen Feng sat cross-legged to the side with his eyes closed. It was as if he had entered a state of selflessness. However, every once in a while, he would send a surge of primeval essence into the Red Cloud Pill Furnace, causing the fire inside to become even fiercer.

Master Lu and Master Zhu stared unblinkingly at Chen Feng, afraid that they would miss a single movement. If one were to say that the feeling of respect that Chen Feng initially gave them was now transformed into admiration.

All of Chen Feng's movements were smooth, as if he was an art form. The two old men watched with infatuation.

In the blink of an eye, more than an hour had passed.

Suddenly, the red cloud pill furnace rumbled loudly. Master Lu and Master Zhu's hearts trembled, "Could it be that they have failed to produce such a loud noise?" However, when they saw that Chen Feng was still unhurried, the two of them immediately relaxed.

The next moment, Chen Feng made a hand sign. The two masters recognized this hand seal. It was the hand seal that Chen Feng made when he was collecting the Crossing Disaster Pills. It seemed that he did not fail this time.

With a "weng" sound, the lid of the red cloud pill furnace suddenly opened. Seven dark brown colored pills shot out, and a medicinal fragrance wafted out. With just a slight sniff, the two masters felt their hearts tremble. Just what kind of pill was this? Just a slight sniff of it was enough to make their cultivations feel like they were improving.

These seven pills were not as hard to obtain as the top-grade Crossing Disaster Pills. Under Chen Feng's hand seal, these seven pills obediently flew into his palm, spinning around.

"Three Revolving Great Revitalizing Pellet, success!" Furthermore, thanks to the Spiritual Flames of the Earth, these seven elixirs have all reached the high-grade, and their effects are purer! " Chen Feng let out a long sigh, his face somewhat pale. Even though it was easy to refine, the consumption of true essence was enormous.

"I wonder what level these seven Three Revolving Great Revolving Pills can help me reach." Chen Feng carefully placed the seven pills into a jade bottle. Then, he raised his head and saw that Shen Chen was still in the midst of comprehending, so he slowly walked out of the alchemy room.

"Masters, is there a place for me to go into seclusion here?" Chen Feng chuckled and did not put on any airs.