Trading system, I exchanged vegetables for golden pills.

Although the silver sword is not as heavy as the black gold longsword, it is still a bit heavier than a regular metal longsword.

Its hardness is incomparable to gold and silver, and its sharpness is equally unparalleled after being infused with spiritual power.

Its overall performance is not much different from that of the Black Gold Longsword. Although it is somewhat inferior, it is still very outstanding.

It's mainly a longsword with a very attractive appearance.

Those who like to show off and act cool probably like this kind of silver sword, it's so cool and stylish!

Of course, girls probably also prefer weapons with a high aesthetic appeal.

Ye Chen put away the two swords and picked up the horn of some unknown creature.

This horn is dark red all over, with spiral patterns, and it gives you a slight tingling sensation when you hold it in your hand.

Ye Chen couldn't find any similar items online.

If it weren't for the fact that this corner contained some lightning-attribute energy and spiritual energy, Ye Chen would easily have mistaken it for an ordinary object.

Ye Chen had never seen anything containing lightning attributes before. If it really was the horn of some kind of creature, what could it be?

Could it be an electric eel?

Forget it, Ye Chen couldn't think of anything either. Whether it was useful or not, he would keep it for now. Maybe it could be used for foundation building in the underground passage?

Ahem, Ye Chen plans to give it a try when Da Huang reaches Foundation Establishment!

After consuming the inner elixir, Dahuang should be close to reaching the Foundation Establishment stage.

If a proper foundation cannot be built...

Let's just pretend he didn't say anything and keep it as a lighter!

If possible, then get a Foundation Establishment cultivator from the Underground Cave for free; it's a win-win situation!

Ye Chen picked up another item; it was a sandalwood box. Whether it was genuine sandalwood or not was unimportant!

Inside the sandalwood box was a jade plaque. The front of the plaque had two characters, "Guardian," and the back had some intricate patterns and a hint of spiritual energy. I don't know what it's for.

It looks like an old item; it might be some kind of keepsake or keepsake.

Putting everything else aside, the box and jade plaque alone are clearly antiques and could be passed down through generations.

Ye Chen looked at it over and over again, but couldn't figure it out. In the end, he just put it away as a souvenir.

Ye Chen picked up a wooden box from the ground, inside which was a seven-colored feather "craft".

This thing is called a feather because it looks like a feather, and it's about 30 centimeters long.

But it's also very hard, like some kind of metal. No feather has that kind of hardness, so it's also like a "work of art".

Most people would probably think this is just a work of art.

However, Ye Chen sensed a certain aura and energy from these seven-colored feathers.

It felt the same as the dragon scales, but the aura was completely different.

It might have been left by some kind of large bird and hardened over time.

Since dragon scales can be used for foundation building in underground tunnels, perhaps bird feathers can be used as well.

Ye Chen thought it would be good to find someone else to try it out...

Let's see who achieves the foundation first, Dongzi or Lao Lu.

If that doesn't work... then just pretend he didn't say anything, anyway he has Foundation Establishment Pills.

Ye Chen thought he was a really good person, always thinking of his brothers, even taking care of their foundation building.

In the end, only one piece of ice jade remained on the floor. It was quite large, about half a meter in length, width, and height.

Ye Chen froze the moment his gaze fell on the ice jade.

Huh? What's going on?

Ye Chen squatted down next to the ice jade to observe it and found that a thin layer of frost had formed on the part of the ice jade that was in contact with the floor of his room.

As Ye Chen approached, the surrounding temperature noticeably decreased.

Ye Chen touched the ground with his hand to confirm that it was indeed frost, and it felt icy cold.

Although it's January, the temperature in his room is still over ten degrees Celsius. Where would frost come from at that temperature?

Ye Chen touched the surface of the ice jade with his hand and then realized that the surface of the ice jade was ice.

He had previously stored the ice jade directly into his storage ring without carefully examining its condition, but now it seems that this ice jade is no ordinary piece.

Ye Chen recalled the scene when he was digging the hole. At that time, there were still ice crystals in the soil, and the temperature inside the hole was much lower than outside.

At that time, he thought it was just that the frost from last night hadn't completely melted away.

It's winter, so this is quite normal.

Now that I think about it, it must be because of this piece of ice jade.

Woo—

Did they find a huge block of ice? Or is it a refrigerator?

I must say, this thing is actually quite suitable as a natural refrigerator.

Ye Chen looked the ice jade up and down and immediately became interested. Could there be some kind of mysterious ice inside?

Ye Chen immediately took another X-ray vision pill, wanting to see what was inside the stone, just like looking at jade.

At first glance, the internal texture is very pure, just like when he extracted the dark green chalcedony.

It's too difficult to see clearly now; it needs to be cut open to examine it.

Ye Chen thought of something and felt a surge of excitement, an urge to cut it open immediately, but he ultimately restrained himself.

He took a deep breath and put the ice jade away; now was not the best time to cut it open.

If it were really as he suspected, it would be a terrible waste.

Ye Chen calmed himself down a bit and began to sort through the things he had looted from Master He's cave.

As for the gold, silver, and jade artifacts, Ye Chen didn't even bother to glance at them, leaving them in a corner of his storage ring.

Those ancient books were what Ye Chen was interested in.

Because you can exploit the system by reading ancient books! Oh no, I mean, it's called an equivalent exchange!

Ye Chen took out all the books and stacked them on the ground, then opened the trading system panel.

As it turned out, there were indeed items available for temporary trading, and quite a few of them!

For him, these traded items were what he was most looking forward to.

The "Humble Sword Technique" can be traded for the "Mysterious Heaven Sword Manual".

Exchanging sword techniques for sword manuals seems like a win-win situation for everyone.

Ye Chen curled his lip. "A poor family really dares to come up with a name, and even boasts about its swordsmanship. The name is quite impressive."

But he went to their doorstep to wipe them out, so why didn't we see them? Nobody even showed any arrogance...

It seems that after all these years, it has finally fallen into ruin!

The sword technique itself must be quite good, otherwise it wouldn't have been given this name, nor would it have been passed down for so long.

It may not be suitable for everyone to cultivate, or rather, not everyone can cultivate it.

Ye Chen turned to the first page. Fortunately, there was nothing that needed to be cut.

It probably requires certain qualifications to master its essence.

As always, keep a copy before making a transaction.

With so many ancient books to be traded, it seems we'll have to print a lot of money again.

We can't let Zhang Qian, the apprentice, copy so many books; that's a bit inhumane...

Ye Chen decided to just pay for the job; he wouldn't let the printing shop owner miss out on the money he was supposed to make.

Zhang Qian, who was busy at the traditional Chinese medicine clinic, couldn't help but sneeze.

"Who's talking about me!" Zhang Qian muttered, rubbing her nose.

The "Humble Abode Qi Refining Technique" can be traded for the "Nine Steps of Mysterious Heaven".

Since it's just exchanging cultivation techniques, no one loses out.

The Nine Steps of Xuantian sounds like a movement technique, but with only nine steps, isn't that a bit too few?

What if the enemy is ten steps away?