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Han Cai murmured, "Elder Du." The moment he spoke, Elder Du appeared out of thin air in front of him. Han Cai spoke again, "Go to the library, find me all books and scrolls that mention purple ginseng, spirit mushrooms, beast marrow, and all the materials needed for the Longevity Pill." He spoke once more, "Blacky, go out and find whatever books and scrolls you can. Bring me everything related to these materials." Blacky, sitting on his bald head, yawned and disappeared.

Han Cai went back to concocting. He made normal medium-grade pills. Besides wasting his time on making Longevity Pills, he made sure to practice normal medium-grade and high-grade pills. His clan had made some good money and hired some low-grade alchemists to create pills, but those pills were only low-level pills. The clan heavily depended on him for medium-grade and high-grade pills. These pills were the reason the clan was flourishing day by day.

Elder Du arrived with all the books on the same day, while Blacky took a few weeks. Han Cai studied the properties of each ingredient deeply. After understanding their properties, he went deeper and studied their chemistry.

Chemistry was his Eureka moment. On Earth, there was an elements table; almost all beings and everything on Earth was made of those elements. He wondered if he could figure out the elements and the chemistry, he might not have to depend on these expensive materials. If you wanted water, you could get it from hydrogen and oxygen, but sometimes if you couldn\'t find just hydrogen and oxygen, you could take hydrochloric acid and sulfuric acid, extract the hydrogen and oxygen from them, and make water from two harmful acids. It was all about understanding the elements.

But to do this, he had to set up a modern lab as normal alchemy concoction wouldn\'t help him. Han Cai was prepared when he decided that he would not use the system in his next life. He had prepared and stored all the knowledge regarding physics, chemistry, math, and other subjects in storage, taking it from the system in case such a requirement arose. He had a grand library of knowledge in one of the Earth-grade rings in system storage. Be it trigonometry or theory of relativity, he had used exchange points to obtain every knowledge. If he wanted, he could create anything from a normal gun to a nuclear bomb. He did not think he would be setting up a chemistry lab in the future, but nevertheless, he was prepared.

But before setting up the lab, Han Cai had to make sure that no one should be able to find it. This led to him working on arrays first before he could start with alchemy.

The array Han Cai decided to create was a form of concealment array, designed to hide the lab from prying eyes, even those of Venerate Realm cultivators. He decided to call this the "Veil of Obscurity Array". Creating this array was a complex process that needed careful planning and execution.

First, Han Cai laid out the design of the array on a parchment, marking key points and channels where the spiritual Qi needed to flow. The array was intricate, filled with countless interconnections and carefully planned nodes. Each line and dot had to be drawn accurately, as even a small mistake could render the array useless or worse, backfire on activation.

After finishing the design, Han Cai started the process of inscribing the array. He chose a spot in the room where the lab was going to be. That spot would serve as the array\'s core. He then used Yongnian\'s cultivation base to channel Qi through a high-grade spirit stone. Yongnian directed this Qi-charged spirit stone to carve the array\'s complex pattern onto the floor of the lab. The stone, acting as a precise tool, etched the design into the very foundation of the building, imbuing it with potent spiritual energy.

Inscribing the array took several months due to the complexity of the design and the level of detail required. This array was so demanding that even Yongnian sweated and had to maintain a steady flow of Qi through the spirit stone during the whole process, ensuring that the inscriptions were carved correctly and uniformly. But still, they failed. However, Han Cai did not give up; they continued trying again and again.

Finally, after countless failures, they succeeded. Once the array was carved, Han Cai began the activation process. He placed additional high-grade spirit stones at key points around the array, using their energy to \'fuel\' the array. As he channeled his Qi into the array, it began to glow, the carved patterns lighting up and spiraling outwards from the core.

Finally, when the array was fully activated, the room disappeared from view, hidden behind a veil of spiritual energy that would mask its existence even from Venerate Realm cultivators. The Veil of Obscurity Array was complete. Han Cai felt a massive movement inside his soul. When he looked at his abilities, the system showed his array grandmaster ability had moved from dormant to semi-dormant. Han Cai laughed out loud; this was a pleasant surprise.

This was a perfect example of how this world worked for him. Here he was, working hard to awaken his alchemy ability, and he ended up almost awakening his array grandmaster ability.

Even if his array ability was semi-dormant now, there was no change in his plans. Han Cai decided it was now time to set up his lab.

Setting up a chemistry lab was a task unlike anything Han Cai had done before. The new approach required a blend of his cultivation knowledge and his understanding of earthly chemistry. He decided to begin with beakers, flasks, test tubes, and other tools.

Han Cai faced another challenge in carving these materials. When he used his flame Qi to shape them, he was not getting the precise results he wanted - the materials would break down. He tried combining it with freezing Qi, but it was still not good enough. Han Cai had a hard time believing he could not carve modern world materials; he had potent rich flame Qi in his veins.

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Gifts are always appreciated, but golden tickets and power stones matter a lot too. 

If we reach 2000 power stones, I will release two supplementary chapters. 

If we reach 1000 golden tickets, I will release five supplementary chapters.

Thank You