Fang Chen took out the three low-grade, profound-rank spiritual treasures and tossed them to Little Sword, but Little Sword's eyes were fixated on the Heaven Profound Mirror in his hand, drooling with desire.

Little Sword said, "Little Chen, I have a premonition that if I swallow this mirror along with those three spiritual treasures, I might be able to break into the fifth rank!"

Fang Chen shook his head. "You can’t have the Heaven Profound Mirror."

Although he hadn’t inquired in detail, he could guess that a mid-grade, profound-rank Heaven Profound Mirror had to be quite rare on the market. Otherwise, why would a Dao Union Realm expert like Langya Xing Zhou carry it with him?

Little Sword was somewhat disappointed but did not insist. It went on to enjoy the other three exquisite items.

"Little Brother, make sure to focus on cultivating the Heavenly Supreme Pill Technique," Little Mirror reminded.

Fang Chen nodded slightly and began to quietly mobilize the blood and qi within his body. The turbulent blood, like flowing lava, surged through his body like a mighty river.

Using the method taught by Jiang Tian'ai, he finally captured a trace of the inherited technique. Jiang Tian'ai had not set any barriers for him, so Fang Chen could access the inheritance at any time. It was fortunate that the outside world was unaware of this.

They only knew that Jiang Tian'ai likely possessed the Heavenly Supreme Pill Technique but had to wait until she reached a certain level of cultivation to unlock it. Otherwise, Jiang Tian'ai wouldn’t have been able to protect herself all those years.

As the inheritance was activated, a golden light surged out from Fang Chen’s body. This golden light transformed into ancient, ornate characters, forming a series of special tomes.

"Is this the Heavenly Supreme Pill Technique?

Fang Chen gazed quietly at the contents of the tomes, which were divided into four volumes. Heaven, Earth, Profound, and Yellow. Each volume was filled with nearly a million characters, and to fully understand and master them would take an incredibly long time.

𝕗𝐫𝚎𝗲𝘄𝐞𝕓𝐧𝕠𝘃𝕖𝐥.𝐜𝚘𝚖

He chose to start with the Yellow rank introductory volume.

He activated his Primordial Immortal Eyes. Golden veins extended within his eyes, and his comprehension of these characters significantly increased.

In the Three Thousand Dao Realm, there was no sense of time or shifts in seasons. Fang Chen remained motionless for a full two years. During these two years, he neither practiced cultivation nor performed any techniques; all his focus was immersed in the introductory text of the Yellow rank tome.

This volume covered 4,800 types of pills, ranging from low-grade, yellow-rank to top-grade, yellow-rank. Each pill came with a detailed recipe. There were even pills with multiple alternative recipes. The sources of the spiritual materials, their characteristics, and the effects of the pills were all complex.

Just memorizing these recipes, understanding the names and forms of various spiritual materials, and other detailed information took him a full two years.

***

Fang Chen slowly opened his eyes and let out a deep breath.

After two years, he had only managed to grasp the most basic aspects of the technique. The Heavenly Supreme Pill Technique was indeed remarkable. Unlike how alchemy usually was, it did not emphasize the heat applied but rather the pill fire.

Some pill fires could only be used to make one type of pill, while others could create dozens. There were 286 methods for refining pill fires alone.

"There are 286 methods for refining pill fires, which are closely related to the power of fire. Fortunately, compared to the previous step, this one is somewhat easier."

After another year, Fang Chen finally mastered the 286 methods for refining pill fires. This step had the benefit of consuming spiritual energy, so he was effectively also practicing during this time.

With both steps completed, the third was to find the corresponding materials, set up the furnace, and practice alchemy. However, since Fang Chen did not have the materials, he skipped this step and moved directly to the Profound rank tome.

The Profound rank tome contained 721 types of pills, ranging from low-grade, profound-rank to top-grade, profound rank. Additionally, it recorded forty-nine methods for refining pill fires. Fortunately, many of the spiritual materials overlapped with those in the Yellow rank tome, saving him a lot of effort.

This time, Fang Chen only took six months to memorize everything thoroughly. However, he struggled significantly with the pill fire refining step. Even the simplest pill fire required immense effort for him to barely refine, making it difficult to sustain even for a short while.

"Brother, don’t force it," Mirror of the Universe advised. "The Profound rank tome is meant for cultivators at the Middle Three Realms. If you can barely refine the simplest of them, even if it only lasts for a few breaths, it means you have outstanding talent and a solid foundation. To reach a level where you can use it for alchemy, you would need to at least reach the Nascent Soul Realm."

"These pill fire methods seem quite formidable. If used in battle... each one is among the strongest fire techniques of the same grade…" Fang Chen contemplated thoughtfully.

"Hehe… You're right. Not only is the Yellow rank introductory tome valuable, but even any one of the 49 pill fires in the Profound rank tome is at the peak of its level within the same realm and possesses terrifying power," the Mirror of the Universe said with a hint of pride.

"Nowadays, it's quite rare to find someone who can master two or three of them at the same time. After all, in the past era, only the Heavenly Supreme Pill Technique used this approach, making it unique among pill masters’ techniques."

"So, how is the Heavenly Supreme Pill Technique different from other techniques? What are the differences in the finished pills?" Fang Chen asked.

Both the Yellow rank introductory tome and the Profound rank tome focused solely on teaching him the process of refining pills, without addressing these crucial details.

"Difference? There are differences in the quantity and quality of the pills produced," the Mirror of the Universe explained. "Additionally, the Heavenly Supreme Pill Technique might teach several different recipes for the same pill. All of them can produce the pill, but their efficacy may vary. This allows for the substitution of hard-to-find spiritual materials with alternatives.

"In contrast, ordinary pill masters typically only know one recipe. If certain spiritual materials are completely unattainable, the recipe could essentially become lost."

Fang Chen nodded lightly and started to study the Earth rank tome.

"Brother, you can't practice this now anyway," the Mirror of the Universe noted.

"I’m just going to memorize the pills and the pill fire refining methods for now, so I don't make mistakes in the future," Fang Chen casually responded.

"Alright…."

The Earth rank tome contained only 99 pill recipes, so memorizing them was relatively straightforward. It also only had nine methods for refining pill fires. However, the pills in this section were designed for experts in the Upper Three Realms, meaning the required spiritual treasures were rare and the requirements were very strict.

If the Yellow rank tome required spiritual materials to be aged for hundreds of years and the Profound rank tome for thousands, the Earth rank tome demanded spiritual materials tens of thousands of years of age. Finding those treasures could take an immense amount of time and effort.

After memorizing the pills and refining methods, Fang Chen's gaze fell on the final section, titled the Heavenly Supreme Tome.

Use the heavens and earth as the furnace, the Five Elements as the flame, to refine the Heavenly Supreme Pill.

The Heavenly Supreme Tome contained only one recipe: the Heavenly Supreme Pill.

The core ingredient for this pill wasn’t a herb or a material, but the cultivator themselves.

If successfully refined, a supreme being would be born.