Cultivation of immortality begins with an eighty-year-old eunuch.

The afterglow of the revelry gradually dissipated in the cold wind of the wasteland, replaced by the busy figures of the Blackrock tribe.

After conquering the Bloodrock tribe's territory, the Blackrock tribe's territory more than doubled in size. The mining of the veins, the transport of spoils, and the redeployment of the defensive lines made the already short-handed tribe even more compact.

However, these disturbances had little to do with Chen Fan.

Back at the Black Rock Tribe's campsite, Chen Fan refused the two-story stone building that Chief Tiegu had specially prepared for him, and instead returned to the simple stone house that was drafty on all sides and located near the Netherworld Beast's mud pit.

For him, no matter how good the stone building was, it couldn't compare to this wasteland where he could quietly study herbs.

"Brother Chen, your skill in preparing herbs is something I've never heard of in my three hundred years of life."

In front of the stone house, the old shaman Mugu watched Chen Fan sort and dry several kinds of herbs that had just been transported from the Blood Rock Tribe's medicine storehouse, marveling at the sight.

After this battle, Mu Gu's attitude towards Chen Fan had completely changed. If before he was seeking guidance with a touch of awe, now he was treating him with the complete respect due to a disciple.

Chen Fan carefully placed a bright red "Crimson Flame Grass" with a faint glow on the stone slab, cut off the root with a bone knife, and replied without looking up, "It's just some rudimentary medicinal combination, Brother Mu, you flatter me. The body-refining methods of the Ancient Demon Clan are powerful, but they rarely treat hidden injuries to the body. Although this Crimson Flame Grass is extremely poisonous, if combined with the juice of this 'Ice Flower,' it can be transformed into a gentle medicinal power, specifically for treating the meridian burns left by warriors when tempering their qi and blood."

Mu Gu stepped forward, carefully examining the two herbs, his brows furrowed, as if he were mentally rehearsing the process of their fusion.

A moment later, he slapped his thigh, somewhat annoyed, and said, "Oh dear! How could I not have thought of that before? Crimson Flame Grass and Ice Flower are everywhere here, but we only knew to use Crimson Flame Grass to temper our skin and flesh, and every time we ended up with our skin torn and bleeding. We never knew it could be used to harmonize our bodies like this. Brother Chen, what's wrong with your brain?"

Chen Fan smiled slightly, touched the slightly blackened horns on his forehead, and said calmly, "It's just from reading a few more ancient books and practicing until I'm proficient. Brother Mu, here are a few batches of 'blood-activating ointment' that have been prepared. Take them back and distribute them to the soldiers who have broken their bones on the battlefield. Apply it three times a day, and they'll be able to get out of bed in less than half a month."

Mu Gu carefully accepted the rough earthenware jars Chen Fan handed him, clutching them to his chest as if they were precious treasures, and repeatedly expressed his gratitude: "Thank you, Brother Chen, thank you, Brother Chen. Those rough men have been nagging in my ear every day, it's so annoying. With this medicine, I can have a few days of peace and quiet. Then I won't disturb your cultivation any longer."

After seeing Mugu off, Chen Fan stood up and slowly walked to the muddy pool beside him.

The Netherworld Beast he had saved was lying in the muddy water. When it saw Chen Fan approaching, its massive body moved slightly, creating a murky wave on the surface of the water.

Having survived the baptism of this battle, the beast has grown considerably, now reaching nearly seven zhang in length. The spines on its back gleam with a chilling luster under the firelight, and it is beginning to exude the aura of a lord-level demon beast.

It swam to the shore and gently touched Chen Fan's calf with its huge mouth full of backward teeth, making a submissive "gurgling" sound in its throat.

Chen Fan kicked its cold, sticky forehead and laughed, "You beast, you're a bit more obedient than before. Today I'll reward you with a few more pieces of demon beast meat."

After saying that, he picked up a half-rotten beast carcass from the animal pen next to him and casually threw it into the mud.

The giant beast suddenly opened its huge mouth, bit into the remains, and dragged them to the bottom of the water. The few small Nether Beasts around it were so frightened that they all retreated, only daring to pick up some pieces of meat that had fallen a few feet away.

Seeing this harmonious scene, Chen Fan patted the dirt off his hands and returned to sit cross-legged in front of the stone house.

Time flies...

He looked up at the gray-yellow sky and muttered something to himself.

Since arriving at this third level, he has been living in this ancient demon's body for over a year.

Despite experiencing a tribal war, it did not disrupt his rhythm.

For a Nascent Soul cultivator like him, who has lived for hundreds of years and whose will is as firm as a rock, a year is but a drop in the ocean.

Since this "demon heart" test is about identification, he gradually integrated himself into it.

In spiritual practice, time knows no bounds; one is unaware of the changing seasons.

The days passed peacefully like this.

Spring goes and autumn comes, flowers bloom and wither.

On this ancient planet of demons, where there are no distinct seasons and only endless cycles of sandstorms and scorching heat, time flows by in an extremely subtle yet unstoppable manner.

One year.

Three years.

Five years.

Ten years have passed in the blink of an eye.

Many changes have taken place in the Black Rock Tribe over the past decade.

Because of the annexation of the Blood Rock Tribe, the Black Rock Tribe's strength increased significantly. It then successively annexed several smaller nearby tribes, completely unifying the wasteland and mineral veins within a radius of thousands of miles.

What was once a small tribe with only a few thousand people has now developed into a powerful tribe with tens of thousands of people and nearly a thousand soldiers.

Over the course of those ten years, Chen Fan transformed from a lowly "beast slave" whom everyone avoided into a highly respected and universally revered "pharmacist" within the entire Black Rock Tribe.

Whether they are ordinary quarry workers, low-level miners, or the most powerful warriors in the tribe, they will all bow respectfully and call Chen Fan "Pharmacist".

Even the clan chief, Tiegu, would personally come to Chen Fan's stone house to discuss important matters with him.

Over the past ten years, Chen Fan has transformed the once desolate open space in front of his stone house into a medicinal herb field spanning several acres.

The medicinal field was filled with all sorts of ancient demon star herbs, lush and green, forming a stark contrast with the surrounding gray-yellow wasteland.

The Netherworld Beast he saved has now grown to over ten zhang long, becoming the undisputed "Netherworld Beast King" of this region.

Besides treating patients and preparing medicines for his clansmen on a daily basis, Chen Fan spent most of his time cultivating and deducing the "Blood Tempering Technique".

This ancient demonic body has undergone tremendous changes after ten years of refinement.

In the early morning, sunlight pierced through the sand and dust, shining on the open space in front of the stone house.

Chen Fan sat cross-legged on a large rock, shirtless.

He was twice as tall as he was ten years ago, and the scales on his body were no longer the dull gray they used to be, but had turned into a deep, dark ink color, with the edges faintly revealing a layer of cold, metallic luster.

Beneath the skin, thick, dragon-like veins undulated slightly, and the dark red bloodline power could be faintly seen flowing steadily and slowly within them.

The pair of curved horns on its head had grown to about a foot long, as black as ink, and were covered with fine and ancient blood-red patterns.

That was the natural manifestation of the power of his bloodline after he cultivated the "Blood Tempering Technique" to an extremely high level.