As far as Lin Yuan knew, a medium-grade spirit stone in the legendary immortal cultivation realm was equivalent to a hundred lower-grade spirit stones.

If the ordinary spirit stones he got before were low-grade spirit stones, then the spirit stones in front of him with a stronger aura would naturally be medium-grade spirit stones.

"It is said that the aura in the medium-grade spirit stone is more refined than the aura in the lower-grade spirit stone, I don't know if this medium-grade spirit stone can help me break through to the foundation building period!" Lin Yuan waved his hand, grabbed the medium-grade spirit stone in his palm, and thought to himself.

Immediately after, he started the immortal cultivation technique, trying to absorb the spiritual energy from this medium-grade spirit stone.

"Whoosh!"

The next moment, from that spirit stone, an extraordinarily pure aura gushed out, along Lin Yuan's arm, into his body.

"Buzz!"

After absorbing this aura, Lin Yuan only felt that the sea of qi trembled, and the bottleneck of the foundation building period seemed to have loosened a little.

However, in the end, it was nothing more than that, and it did not help him break through directly to the foundation building period.

So, Lin Yuan put this medium-grade spirit stone into the space crystal.

Through the attempt just now, it can be confirmed that the medium-grade spirit stone with a more refined aura will indeed help him break through to the foundation building stage.

It's just that the power of this mid-grade spirit stone alone is far from enough to help him break through directly, and he has to find another way.

"Whoosh!"

So then, Lin Yuan urged the flying boat and returned to Lingshan with the bison who reported the news.

......

Soon, Lin Yuan returned to the top of Lingshan, preparing to collect the flying boat and enter the cave to meditate.

"Moo!"

But who knows, at this moment, a bison ran over in a hurry, and roared anxiously, which means that the king, no, something is wrong!

"Moo!"

Lin Yuan frowned and roared, meaning that something happened again?

"Moo!"

The bison immediately roared, which means that when I was looking for resources in the mountains with my companions, we found a spiritual grass with a stronger aura on a certain mountain, but who knows, just as we were about to get it back, a black scorpion suddenly ran out from behind a boulder next to it, and the scorpion directly poisoned my companion to death, and I couldn't beat the scorpion, so I could only come back for help.

"Moo!"

Hearing that another bison had died, Lin Yuan's face sank, and then he roared angrily, and his consciousness said, come up, lead the way!

"Moo!"

The bison roared at once, and the consciousness was to say, yes, the king.

Immediately, it jumped into Lin Yuan's flying boat.

"Whoosh!"

Then, Lin Yuan urged the flying boat and left Lingshan with the bison.

......

It didn't take long for Lin Yuan to take the bison and find the location of the incident.

I saw that halfway up the mountain in front of me, there was indeed the corpse of a bison.

Nearby, a giant black scorpion with a length of one meter was gnawing on the carcass of a bison.

"In the middle of Qi training, hmph, evil animal, suffer death!" After seeing the cultivation of the black scorpion, Lin Yuan's eyes suddenly flashed, and then his heart moved, and he took out the green short sword from the space crystal, and with the emerald green sword that was a long time, he slashed at the scorpion at an astonishing speed.

"Tsk!"

Seeing this, the scorpion immediately let out a frightened scream, and at the same time hurriedly shook its scorpion tail in an attempt to resist Lin Yuan's green flying sword.

"Whew!"

However, the next moment, Lin Yuan's green flying sword was like cutting tofu, directly cutting the black giant scorpion in half.

"Moo!"

Seeing this scene, the bison who led the way suddenly showed surprise in his eyes, and couldn't help cheering, which means that the king is awesome!

The scorpion, which it couldn't figure out with all its might, was killed by the king in seconds, which shows the horror of the king's strength.

"Whoosh!"

However, Lin Yuan was very calm, and with a wave of his hand, he collected the corpse of the black giant scorpion into the space crystal.

Scorpion meat is also a rare tonic, and it must be taken back to eat.

And with his cultivation at the peak of the late stage of Qi training, plus a sharp flying sword, there was no difficulty at all in killing a giant scorpion in the middle stage of Qi training, so he didn't take this matter to heart at all.

After that, he really saw a spirit grass with an extraordinarily strong aura next to a boulder next to him.

"Could it be that this is a second-level spirit grass?" Lin Yuan waved his hand, and then took out the spirit grass in the air and looked at it carefully.

It is said that in the world of cultivating immortals, there are also high and low levels of spiritual flowers and spiritual grasses.

If the ordinary spirit flower spirit grass he got before was only a first-level medicinal herb, then the spirit grass in front of him with an extraordinarily strong aura should be a second-level medicinal herb!

"The medium-grade spirit stone will help me to break through to the foundation building period to a certain extent, this second-grade spirit grass that is more precious than the medium-grade spirit stone should also help me break through the foundation building period, if it is refined into an elixir, the effect must be good!" After looking at it for a while, Lin Yuan nodded with great satisfaction, and secretly said in his heart, and then received this second-grade spirit grass into the space crystal.

After that, he threw another fireball, disposed of the bison's carcass, and observed a moment of silence for the people.

"Whoosh!"

Then, he urged the flying boat, turned into a blue streamer, and quickly returned to Lingshan.

......

Soon, Lin Yuan returned to the top of Lingshan, preparing to put away the boat and return to the cave to rest and rest.

After running two times in a row, he consumed a lot of aura, and he needed to recover a little.

"Moo!"

But who knows, before entering the cave, a bison ran over in a hurry, and roared anxiously, meaning to say, King, it's not good, something happened!

“...... Moo!"

Lin Yuan was stunned for a moment, then frowned, and yelled with a depressed face, meaning to say, what happened to your sister?

“......”

When the bison heard this, he was suddenly stunned and looked dazed.

What's the situation?

It has just come back, and the king is angry with Mao for it?

"Moo!"

Lin Yuan frowned and roared impatiently, meaning to say, okay, okay, let's talk about it, what the hell is going on.

"Moo!"

The bison came back to his senses and hurriedly roared, meaning, "My lord, I am a calf in charge of guarding the mine, and our mine has been attacked!"

"Moo!"

After Lin Yuan heard this, he was shocked and angry, his eyes widened, and he roared angrily, and his consciousness was to say, who is the enemy?

The mine is very important and there is no room for error!

Whoever dares to touch his mine, he will not spare it.

"Moo!"

The bison hurriedly roared, meaning a pack of wild dogs.

"Moo!"

Lin Yuan was stunned for a moment, and then roared again, which means that how many are there on the other party and what is the strength?

"Moo!"

The bison immediately roared, meaning that there were hundreds of them, all of them were mid-stage Qi cultivation cultivators!

Lin Yuan was suddenly startled when he heard this, and then hurriedly got on the flying boat, turned into a blue streamer, and went straight to the mine.