Trading system, I exchanged vegetables for golden pills.

"You don't even understand this? Looks like you haven't gotten any smarter!" Ye Chen stroked his chin.

"Woof woof!" the dog barked twice in protest.

Ye Chen patted its head and said, "Wrong answer, the answer is 3. You missed barking!"

The dog was completely speechless; if it could speak, it would definitely unleash its trolling prowess.

I haven't learned this, okay!

Ye Chen then asked Gouzi a few more questions, as if he were quite serious.

What is 3 + 3? What is 5 + 5?

Unsurprisingly, the dog still looked completely bewildered.

Of course, Ye Chen was just having fun; it would be a miracle if the dog understood anything.

Ye Chen was actually carefully observing the dog's micro-expressions and physical reactions.

The dog's expressions and subconscious movements are indeed more intelligent than before.

Of course, it's also possible that Ye Chen hadn't observed the dog closely before.

My eyesight is better now than before, so I can see details that I couldn't see before.

Whether the dog has truly developed intelligence remains to be seen.

Ye Chen played with the dog for a while and then ignored it.

It's common knowledge that you shouldn't waste your time on a simp.

He went straight to his grandfather's former study.

The door was locked with an old-fashioned padlock, and it looked like it hadn't been opened in a long time.

This room faces the sun, so it's less likely to get moldy or damp.

Otherwise, Ye Chen was worried that the room might be covered in mold after being closed for so long.

Ye Chen opened the door and pushed it in; a stale, complex smell immediately wafted out.

It's been a long time since anyone has come in.

Ye Chen's eyes immediately fell on the bookshelf, where the books were covered in dust!

This bookshelf was specially made by my grandfather to prevent insects, so there shouldn't be any problems.

However, Ye Chen was still a little worried.

He strode forward, took out a book and flipped through it. He found that it was still quite well preserved, and he breathed a sigh of relief!

Normally, if books are left lying around like this, they'd probably be almost completely eaten by insects.

This is the wisdom of the older generation!

Looking at the shelves full of traditional Chinese medicine books, Ye Chen couldn't help but sigh, "These are the crystallization of human wisdom!"

There are so many medical books, and quite a few of them are thread-bound books.

If they were sold, they could probably fetch a lot of money, but of course Ye Chen wouldn't do something so short-sighted as to kill the goose that lays the golden eggs.

Ye Chen picked up a feather duster made of real chicken feathers and began to sweep away the dust.

In no time, the entire study was filled with smoke and dust.

Ye Chen held his breath the whole time, and ended up holding it for quite a long time, a full three or four minutes.

After sweeping the dust off the bookshelf, Ye Chen ran outside to get some fresh air.

It seems his cardiopulmonary function has improved; he was able to hold his breath for so long on his first try, whereas before he would feel dizzy after 30 seconds.

After the smoke cleared, Ye Chen went back inside and casually picked up a book from the bookshelf to start reading.

He was completely absorbed in watching it, as if he had returned to the time when his grandfather taught him when he was a child.

Things I didn't understand before, I now have new insights when I revisit them.

And so, Ye Chen began his immersive reading mode.

Rural life is peaceful and undisturbed, with only the occasional barking of chickens and dogs.

The next day, Ye Chen got up early as usual and practiced Tai Chi in the yard for a while before going to his grandfather's study to read.

Around 2 PM, the system notification sounded again, breaking Ye Chen's quiet reading session.

[Ding— Items required for a special trade have been detected. Temporary trade item list unlocked. Do you wish to trade now?]

Hearing the system's notification, Ye Chen was slightly taken aback.

Goodness, why does this sound different again?

What special items are required for this transaction?

Ye Chen put down his book and hurriedly opened the system panel.

Trading System

[Currently tradable items: Gold, Healing Pills, Nine Forms of Mystic Needles, Sumeru Needle Bag.]

Items required for the transaction: *Huangdi Neijing* (The Yellow Emperor's Inner Classic) and *Zhenjiu Dacheng* (The Great Compendium of Acupuncture and Moxibustion)

[Unlock new items after completing 200 transactions!]

[Current total number of transactions: 111]

Ye Chen blinked as he looked at the newly added [Nine Forms of Mystic Needles] and [Sumeru Needle Bag] among the tradable items.

They all looked quite good, but they required specific medical books to exchange for them. Ye Chen hesitated as he looked at the shelves full of medical books.

These were all left by his grandfather, and to be honest, he didn't really want to take them out to exchange.

Ye Chen searched the bookshelf and finally found the "Huangdi Neijing" and "Zhenjiu Dacheng" in two wooden boxes.

As luck would have it, both books are thick, thread-bound books, and they look quite old.

These are the only two books that Grandpa stored in a box.

Putting aside the content of the book, the book itself is probably an old item.

This damn system has a really sharp eye; it picked out two antique books right away. That's outrageous!

There are similar books on the market, but many of them are compiled by later authors and include their subjective opinions.

It's a mixed bag, and Ye Chen can't really make a judgment on it.

However, his grandfather still liked to read these old books, and perhaps influenced by his grandfather, Ye Chen also had a different kind of feeling towards these old books.

Ancient books are good, but systematic things also seem very tempting. The Nine Styles of Mysterious Needle sounds amazing. How should I choose?

In the end, Ye Chen silently took out his phone and downloaded a scanning app!

Then Ye Chen spent half an hour scanning the two books.

"System, system, how about a scanned version? Electronic versions are so much more convenient to read, and I'll even throw in a cell phone!" Ye Chen said in a dog-like tone.

"Sorry, Master, this system cannot change the rules!"

The system's emotionless voice rang in Ye Chen's mind.

Ye Chen was helpless; this damn system was completely unreasonable.

Since the content is the same, why can't it be done?

He kindly offered to give her a phone, but she still doesn't appreciate it.

Well, in that case, he'll have to keep the electronic version himself.

Ye Chen went out and brought back three bags of flour, then placed the two books together.

Having made up his mind, Ye Chen no longer hesitated and directly exchanged for 3 disease-curing pills, the Nine Forms of Mysterious Needles, and the Sumeru Needle Bag.

After he finished exchanging them, the exchange options for the Nine Forms of Mysterious Needles and the Sumeru Needle Bag disappeared from the system.

In the next instant, three disease-curing pills and an inconspicuous small gray-white sachet appeared in Ye Chen's hand.

Ye Chen was slightly taken aback. Was this little sachet a needle pouch?

The small bag is about the size of an egg; it is indeed quite small, but...

Don't lie to him, okay? He's seen it on TV too. Needle bag, it, is it really that small?

You probably can't even fit a needle in there, right?

Could it be a miniature version of a needle?

Ye Chen looked at the Sumeru Needle Pouch suspiciously, and even opened it to peek inside, but he didn't see any needles!

Where's the needle pouch? Where are the needles? Oh, just one pouch?

And what about that, the Nine Forms of Mysterious Needle?

Ye Chen felt like he had been tricked.

"Hey, System, you forgot something, didn't you? Where's the Nine Forms of Mystic Needles? And what about the needle pouch and the needles?"