As night fell, on a certain street in Greenwood City, Gu Heng and another person sat around a table, drinking and chatting merrily. Their hearty laughter occasionally drew the attention of passersby.

Gu Heng looked at the money pouch pushed in front of him. Without opening it, just by weighing it in his hand, he knew that Brother Wu had definitely given him more than enough.

"Oh, this is too much."

"Doctor Gu, don't refuse. You've taken such good care of everyone. If I give you too little, never mind others, my wife would beat me with her shoe when I get home!"

"In that case... alright, thank you, Brother Wu!"

"Haha, Doctor Gu, you're a straightforward person. Let's not talk about money anymore. Come, let's drink and eat!"

"Alright! Let's do it!"

Gu Heng was in high spirits, having finally sold his Medicine Hall after spending some time on it. This Brother Wu was a well-known local tycoon, never short on silver when buying medicine from Gu Heng. Tonight, he had spent a hefty sum to buy Gu Heng's Medicine Hall, naturally making Gu Heng overjoyed.

Since he was entertaining his benefactor, he couldn't refuse his hospitality, so he drank along. Although this wine was considered top-notch by ordinary people, Gu Heng found it bland and not intoxicating.

Of course, Gu Heng kindly reminded Brother Wu that Greenwood City would soon be in chaos and mentioned his intention to leave. However, Brother Wu didn't seem to care much. He was a merchant, well-traveled and knowledgeable, and though an ordinary person, he often hired cultivators.

To him, cultivators were just like that.

Although Gu Heng admired Brother Wu's courage, he still couldn't shake his desire to leave.

After several rounds of drinks, the two parted ways and went home. Gu Heng pushed open the door of the Medicine Hall, where Little Xi was lying on a nearby wicker chair, eyes half-closed. He couldn't tell if the cat was tired or sleepy.

He petted Little Xi's fur and began packing his things.

Gu Heng searched through every drawer in the medicine cabinet, storing the herbs in the "System Backpack."

This System wasn't entirely useless. Although it only allowed Gu Heng to practice "skills" that couldn't earn money and were unrelated to cultivation, it had other functions. For example, the "System Backpack"—Gu Heng still hadn't figured out how much it could hold, but it was certainly vast.

It was akin to the "Mysterious Ring" used by cultivators, but Gu Heng couldn't afford such expensive treasures, nor did he need them.

After a short while, Gu Heng took out some herbs he planned to use up and placed them on the table.

There weren't many herbs left, so he decided not to take them. He would use them to brew a medicinal soup later.

Just as Gu Heng was about to head to the back room to pack more things, he paused at the door, then turned back to the table where he dispensed medicine and pried open a stone block to retrieve a book from underneath.

The book was old, like an ancient artifact, but not damaged. The cover was intact, though covered in dust.

"The Grand Medicine Compendium."

This book was a gift from the System after Gu Heng's "medical skills" reached a "masterful" level.

The name was grand and mysterious, but after flipping through the not-so-thick book, Gu Heng found its content unrelated to its title.

Because the book taught how to refine medicine, and the names of the herbs inside... Gu Heng compared them with those in the System mall, and then—

They were the same!

All that mystery, and it was just something that matched the System mall. If he showed this book to others, Gu Heng was sure they wouldn't understand it, or even if they did, they wouldn't take it seriously.

Gu Heng used to chat with other ordinary doctors in Greenwood City, but he soon stopped. His herbs all came from the System mall, while others gathered theirs from the mountains or bought them from elsewhere, with completely different names!

But following the instructions in "The Grand Medicine Compendium" and using herbs from the System mall, Gu Heng could refine medicine and cure illnesses. Yet, from herbs to refining methods, others were entirely different from him... or rather, only he was the "odd one out."

Gu Heng worried that if his "odd" method of refining medicine was discovered, people would accuse him of being a quack doctor, causing harm, which would be a big problem.

"Sigh, I'm tired of flipping through it. It's useless to keep, but... well, it's a unique item, so I'll hold onto it."

Gu Heng muttered to himself, tossing the book on the table.

He had memorized the book's content, but he couldn't bring himself to throw it away.

Because such a System gift was one of a kind. If he discarded it, it would be gone forever. Gu Heng valued such items, even if they were worthless to others. Since "The Grand Medicine Compendium" was the only one in the world, it was worth keeping.

The System had given him other things, but Gu Heng hadn't paid much attention to them.

"Let's keep packing. It's getting late, and I need to leave early tomorrow..."

Gu Heng grumbled, heading to the back room.

The back room and the small courtyard had a lot of things, which would take quite a while to pack.

"...Hmm?"

Su Jinxi looked at the book tossed on the table, her cat eyes narrowing. She slowly jumped down from the wicker chair, her short legs pushing off as she leaped onto the table.

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Next to her were several herbs, exuding a rich spiritual aura. With a glance, she recognized them.

"Tsk, Senior Gu really doesn't care about these things."

The Hundred Spirit Sacred Fruit could repair damaged souls, a treasure sought by all the world's strong, as it could prevent the soul from shattering, extremely rare.

The Dragon Claw Flower, a body-refining item, could grant cultivators the temporary power and physique of a dragon after being made into a pill.

There were other herbs too, all extremely rare treasures of heaven and earth.

Su Jinxi was no longer surprised.

Senior Gu's wealth far exceeded her imagination. She had once managed the Medicine Pavilion of the King of Ten Thousand Demons, but the treasures there were not as abundant as those on Senior Gu's medicine cabinet.

But what caught her attention was the book.

Because the book emitted an unfathomable aura, a profound presence, as if it contained the ultimate truths of the universe!

"The Grand Medicine Compendium..."

"This... could it be real..."

Judging by Senior Gu's attitude toward the book, he probably... wouldn't mind if she took a look, right?

Meow!

Su Jinxi glanced at the back room, which was quiet. She gently lifted her furry paw and slowly opened the cover.

Then, in an instant, her cat eyes were engulfed by a blinding light!

Bang!

With a crisp sound, Su Jinxi was sent flying, crashing into the wall and sliding down.