Under normal circumstances, the treasure hall in the outer courtyard sells treasure-level weapons and elixirs, and as for spirit stones, they are relatively rare.

After all, the cultivation of students in the outer courtyard can only be in the body refining realm, and they don't need spirit stones at all.

However, there are also some students in the outer courtyard who need to use spirit stones because of some special circumstances, such as opening a certain formation, using a certain treasure, and so on.

Therefore, in the treasure hall of the outer courtyard, there are still some spirit stones for sale, but ordinary students in the outer courtyard don't know about it.

About half an hour later, Xiao Yi came to the treasure hall.

As usual, there was an endless flow of people here, and many students from the outer courtyard were here to buy treasures and elixirs.

"May I ask this elder, are there any spirit stones for sale in the Treasure Hall?" Xiao Yi came to an elder and asked him.

"Yes, however, spirit stones cannot be exchanged for academy contribution points, they must be purchased with cash, and only in the treasure hall of the inner courtyard can they be exchanged for spirit stones with academy contribution points, which is the rule of Tianshui Academy. "The elder seemed extremely easy-going, without a hint of arrogance, yes

Xiao Yi patiently explained.

"Hmm!" Xiao Yi nodded, indicating understanding.

Soon, he was led by this elder into an extremely luxurious room.

The floor of this room is paved with white jade everywhere, and even the walls are the same, looking like a royal palace.

"Is this the legendary spirit stone?" Xiao Yi had just stepped into here, and his eyes couldn't help but be attracted by a shop window in the corner.

Because, in this window, there are crystal clear stones.

They are about the size of pigeon eggs, and their bodies emit a pale green glow, like the most beautiful emeralds in the world

"Young man, these are spirit stones, according to the regulations of the academy, the price of a spirit stone is 10,000 taels of gold, how much do you need?" the elder couldn't help but ask Xiao Yi.

"I need a hundred. Xiao Yi replied almost without the slightest hesitation.

Although a hundred spirit stones are worth as much as one million taels of gold, the use of spirit stones is too wide, not only can they improve the cultivation of true qi realm martial artists, but they can also be used to stimulate formations, treasures, and so on.

Therefore, no one will think that there are many spirit stones on their bodies.

"What? a hundred dollars?" the elder couldn't help but be taken aback.

You must know that a hundred spirit stones is an unimaginable wealth for the vast majority of students in the outer courtyard.

But the young man in front of him actually bought so much at once.

Could it be that young people are so rich now?

However, the elder was only surprised, and did not ask much.

A moment later, he took out a hundred spirit stones from the window, put them in a leather bag, and handed them to Xiao Yi.

Xiao Yi didn't count it, he directly put the animal skin bag into his arms, and then took out a large stack of golden tickets and handed them to the elder.

Originally, he had 1.5 million taels of golden tickets on him.

But now, it is suddenly a million taels less.

However, Xiao Yi didn't feel any pain, because the spirit stone was really worth the money.

"With these spirit stones, I should be able to urge the Hundred Dragons Diagram, I don't know how powerful that drop of bronze sword dragon blood can be?" Xiao Yi's eyes couldn't help but flash a hint of excitement, and he couldn't help but secretly say in his heart.

According to Long Ling, although the Hundred Dragons Diagram on Xiao Yi's body was broken, it was able to exert extremely powerful power.

In particular, the more dragon blood it absorbs, the more powerful it becomes.

Although, the Hundred Dragons Diagram has only absorbed a drop of Bronze Stegosaurus blood now, and it should not be a problem to use it to deal with some powerful True Qi Realm martial artists.

An hour later, Xiao Yi returned to his residence.

To be on the safe side, Xiao Yi decided to test the power of the Hundred Dragons Diagram first.

As soon as his mind moved, he took out the Hundred Dragons Diagram from the Dragon Emperor's scales, and then held it in his right hand.

Then, he took out another spirit stone and placed it on top of the Hundred Dragons Diagram.

Zizizizi.

The next moment, a mysterious force surged out from the Hundred Dragons Diagram, wrapping the spirit stone in the middle.

In less than a breath, the spiritual power contained in the spirit stone was absorbed into the Hundred Dragons Diagram by this power.

Roar.

At this moment, a terrifying dragon roar suddenly came out from within the Hundred Dragons Diagram.

The next moment, Xiao Yi saw the phantom of a dragon clan, emerging from the Hundred Dragons Diagram.

This is an extremely divine dragon clan, much more domineering than any dragon beast Xiao Yi has seen so far.

It has a crocodile-like body and a dragon-like head, but dozens of extremely sharp bone swords have grown on its back, exuding a dazzling bronze luster.

"Is this the Bronze Stegosaurus?" Xiao Yi's gaze couldn't help but be attracted by this dragon phantom, and he looked up and down.

As far as he knew, the bronze stegosaurus was relatively ordinary among the dragon clan.

It is said that this dragon family, which has existed in the flood era for tens of millions of years, is an incomparably ancient species.

Although the strength of the Bronze Sword Dragon Clan is not as strong as the legendary Dragon Clan, it is not comparable to ordinary martial artists.

There are even rumors that only a genius who has awakened a heaven-level bloodline has the strength to fight against the Bronze Stegosaurus Clan.

As for the royal family in the dragon clan, they need to awaken the wizards of the supreme bloodline to be able to compete with them, and they don't know if it's true or not.

"Try it for power. A moment later, Xiao Yi completely urged the Bailong Diagram to be aroused.

As his mind moved, the Bronze Stegosaurus Phantom above the Hundred Dragons Diagram shook his body suddenly.

The next moment, a bronze-colored bone sword flew out from the back of the bronze stegosaurus and slashed towards a boulder in the courtyard.

There was a loud pop.

In an instant, the boulder was cut in half by the bronze bone sword, and even a crack several feet long appeared in the ground.

"What a terrible power!" Xiao Yi couldn't help but be stunned by this scene.

Just now, he only used part of the power of the Bronze Stegosaurus, but the lethality was already so amazing.

If you go all out, I'm afraid that the martial artists with two or three true qi will also be killed in an instant.

It is conservatively estimated that the power of this Hundred Dragons Diagram can at least fight against the martial artists of the fifth or sixth realm of True Qi.

"With this killer feature, it's safer to explore the ancient ruins this time. Xiao Yi nodded with satisfaction and took the Hundred Dragons Diagram back into the Dragon Emperor's scales.

As for the spirit stone just now, more than half of the power has been consumed.

Although the power of the Hundred Dragons Diagram is terrifying, the consumption is also extremely huge, if it is used a few more times, I am afraid that the hundred spirit stones on Xiao Yi's body will be consumed.

Therefore, unless it is absolutely necessary, Xiao Yi will not use the Hundred Dragons Diagram.