However, although I don't know the role of Han Jing, I think that this thing is fished out of the cold pool, and it should have something to do with Han Jiao's cultivation.

Du Yun thought secretly in his heart.

Immediately, after receiving it from the system warehouse, he asked again: "Are there many cold stones in Hantan?" ”

"There are quite a lot, but most of them are at the bottom of the pool, even if there are water droplets on my body, I don't dare to stay for too long, the cold really wants me to freeze there!" Zhang Fei exhaled a cold breath while running the exercises, and said depressedly.

Du Yun nodded and didn't ask again.

After he took the water-avoiding beads handed over by the other party and put them away again, he asked Lu Bu and the seven people to retreat, and directly said silently in his heart: "System, extract the Yuanshi vein!" ”

"Ding, find a medium-grade yuan stone vein and start extracting!"

Thundered! Thundered! ……

Just like last time, the cliff behind the cold pool shook violently again, and the already small cracks on it continued to expand, extending from the top to the cold pool.

Cracked rocks are constantly falling from above.

After the shaking stopped, the original mountain wall of tens of meters high had been split in half from the middle, and the entire cold pool was forcibly expanded by hundreds of square meters because of the fall of a large number of stones.

The potholed banks of the river are completely covered by the pool water.

Listening to the system prompt of "successful collection" in his mind, Du Yun, who was floating in the air, took one last look at the cold pool below and said, "Let's go, there's nothing going on here!" ”

"Yes, my lord!"

The seven of Lu Bu understood that the lord had already collected the Yuanshi vein, so he nodded and didn't ask more.

Then, the group quickly flew out of the cold valley and flew towards the outside of the mountain range.

……

After returning to Nanshan City, Ma Chao and Huang Zhong didn't do anything, they first summoned the Hanjiao horse they had obtained before from the horse card, and rode back and forth on the plains outside the city for a few times.

And Guan Yu and Zhang Fei, after grabbing Tian Feng and asking about the situation of the white tiger cub, hurriedly ran to grab the mount!

Guo Jia originally wanted to inquire about Tu Jiao's situation, but when he saw that he was in a hurry to do something, he had to shake his head helplessly and give up temporarily.

As for Du Yun, as soon as he came back, he went to the location of the city monument in the backyard of the city lord's mansion.

……

The backyard of the city lord's mansion, three meters away from the town monument.

Du Yun, who came here, did not absorb the rich vitality in the air to cultivate, but sat cross-legged on the ground and couldn't wait to check the situation of the medium-grade yuan stone veins he had just received.

Medium-grade yuan stone vein: the scale is small, containing 100,000 medium-grade yuan stones.

There are 100,000 medium-grade Yuan Stones!

After seeing the information of the Zhongpin Yuanshi vein, Du Yun's heart beat violently, and his face showed an incredible look.

You must know that the exchange ratio of medium-grade yuan stones and low-grade yuan stones is one to hundred, and one medium-grade yuan stone can be exchanged for one hundred lower-grade yuan stones, and now there are directly more than 100,000 medium-grade yuan stones.

Wouldn't that mean that you can directly exchange for 10 million lower-grade Yuan Stones?

No way! I need to calm down!

After taking a deep breath and forcibly calming down his mood, Du Yun was still quite excited: "After getting this medium-grade Yuanshi vein, I finally don't have to worry about the lack of Yuanshi, and I can let Guo Jia and them speed up and improve their strength!" ”

"However, I don't know what will happen to this medium-grade yuanshi vein after it merges with the previous yuanshi vein?"

Immediately, he asked about the system.

"Ding, a small Yuanshi vein with the heart of Yuanshi can be automatically promoted to a medium-grade Yuanshi vein after devouring a medium-grade Yuanshi vein, and the Yuanshi content will be increased to 110,000, and it has the characteristics of restoring Yuanshi!"

The system says so.

"Ding, it has been detected that it meets the promotion conditions of the small metastone vein, whether the host is sure of the promotion!"

"Promotion!"

Du Yun thought about it for a while, and immediately decided.

Suddenly, the medium-grade yuanshi vein that was received into the system space disappeared, and at the entrance of the small yuanshi vein behind the Zhencheng monument, a golden light was seen flying in.

Immediately after a slight shock on the ground, the Yuanshi vein entered a state of promotion.

The vitality that permeated the air also began to slowly rise.

Du Yun knew that it would take two days for this promotion, so he didn't continue to pay attention to it, but took out the five buckets of cold Jiao blood that he had collected before and put them in the open space in front of him.

At the same time, the two jade slips that recorded the dragon recipe and the dragon blood refining method were also held in his hands.

This time he killed Han Jiao, although Du Yun didn't participate much, he still gained 100,000 points of personal experience, which allowed him to take another step on the road to breaking through to the middle stage of the grandmaster.

But by now, Du Yun has realized.

With the improvement of strength, in addition to a large amount of war experience, the experience points he gained by killing the strong alone can no longer allow him to quickly improve his strength.

The further I go, the more I am afraid that I need to truly cultivate and improve my strength!

Perhaps, this is also the situation that the system really wants to see, otherwise it is impossible for the experience points obtained from killing a demon beast at the peak level of a grandmaster to make it impossible for him to break through even a small level!

Well, it seems that I have to find a chance to find some elixirs and natural treasures to improve my qualifications again!

Du Yun thought secretly in his heart.

Immediately, with the help of the system, his consciousness sank into the two jade slips, and he quickly mastered the entire content of the dragon transformation recipe and the dragon blood refining method.

"The first layer of the dragon recipe: dragon claws, you need dragon blood to assist in cultivation, I don't know if the dragon blood refined from the five buckets of cold Jiao blood in front of me is enough to break through."

Looking at the five large barrels in front of him, Du Yun muttered to himself.

Then, after standing up, he immediately walked to one of the large buckets, put his hand into the cold Jiao blood in the bucket, and immediately urged the dragon blood refining method to start to connect.

Grunt! Grunt! ……

The cold Jiao's blood seemed to be boiling, bubbles tumbled out from the bottom, and the temperature began to rise.

But the height is slowly decreasing.

Because it was the first time to use the dragon blood refining method, Du Yun was not yet proficient, and the refining speed was slightly slower.

It took an hour for him to completely refine the original large bucket of cold blood, and in the end, all that was left was a drop of golden blood the size of tears.

Golden blood floated in the air, releasing a noble aura.

Is this dragon's blood?

A flash of light flashed in Du Yun's eyes, and he did not hesitate to use the Dragon Transformation Technique to absorb it, and then flow along the blood vessels in his body and converge into the palm of his right hand.

The golden light flashed, and soon dimmed.

But Du Yun saw that small but tight golden scales began to appear on his palms, and the area was not large, like fish scales.

And it worked!

He was overjoyed in his heart, no longer paying attention to the palms of his hands, and continued to refine the remaining four buckets of cold Jiao blood.

Three hours later.

The five buckets of Han Jiao's blood were all refined, turning into five drops of golden dragon blood, which were absorbed by Du Yun's refining and integrated into his right hand.

No surprises.

His right hand turned into a dragon claw covered in tiny golden scales, with five thick fingers, and sharp, sharp nails, which looked terrifying!

(End of chapter)