The stone, inconspicuous, was quietly placed in the treasure house of the Yin-Yang Cave.

But.

The flying sword flew out, approached in an instant, and then turned into an emerald green sword bamboo, its roots rooted in the stone.

It seems that for the flying sword, the stone is a very scarce nutrient.

"Is this your sword?" the Black Fire Ox returned, and when he reached the flying sword, his eyes full of curiosity.

Lu Qingshan's flying sword, the Black Fire Bull had already seen it twice, and this was the third time, but the first two times were only glanced at in a hurry, and there was no time to take a closer look.

"It's strange, I remember that it was a sword, but how did it suddenly turn into a bamboo?"

If it weren't for the sword bamboo in front of him, which still exuded a sword intent, the Black Fire Ox almost thought that he had seen it wrong.

Si Xuan followed Lu Qingshan over, his autumn eyes stared at Jianzhu, his eyes were slightly surprised, and said, "This ...... Isn't this the sword bamboo on the Bamboo Sword Peak? strange, it seems to be a little different from the sword bamboo on the Bamboo Sword Peak......

Lu Qingshan stood with his hands in his hands, nodded slightly, and said, "Senior Sister Si Xuan is right, this is the sword bamboo on the Bamboo Sword Peak, but after my cultivation, some changes have occurred, and it can usually become a flying sword, with an extremely terrifying speed......"

Wow!

As soon as the words fell, Lu Qingshan's heart moved, and the emerald green sword bamboo immediately turned into a flying sword and flew out in an instant.

Its speed is simply impossible to grasp.

"This speed...... It's terrifying!" The Black Fire Bull's eyes widened, as if he felt a little incredible, and muttered: "With your cultivation, with this flying sword, the same realm is simply invincible! If you are unexpected, you can even cross the border to kill a strong enemy! No wonder the Yin Yang Cave Cave Master was pierced by your sword piercing the center of his eyebrows!"

In the end, the Black Fire Ox had vicious eyes, and he could see the horror of the flying sword at a glance.

Lu Qingshan nodded and added: "The world's martial arts, only fast and not broken! This flying sword is one of my foundations, and I will not use it unless I have to." However, every time you use it, you will inevitably kill a strong enemy......!

Lu Qingshan frowned, picked up the black stone in front of him, and said, "It's just, what is this stone?" I can sense that my flying sword seems to be desperately longing for this stone!"

The Black Fire Ox leaned over, his eyes fixed on the stone in front of him, and his nose twitched vigorously, until a long time later, the Black Fire Ox said with a hint of uncertainty: "This stone seems to come from outside the sky...... The Great Emperor once said that there are many ancient mines outside the sky, and if they are integrated into the Yuan Weapon, they can have all kinds of incredible powers!"

Lu Qingshan nodded.

He also felt a trace of unusual aura on this black stone, but he couldn't be sure.

With the knowledge of the Black Fire Ox, there should be nothing wrong with what he said.

Wow!

Lu Qingshan's heart moved, and the flying sword immediately turned into an emerald green sword bamboo like a greedy child, and once again rooted its roots in the stone.

Then, the flying sword took the stone and returned to Lu Qingshan's sea of qi in an instant.

Lu Qingshan found that there was an extra stone in his sea of qi.

Right now, with the absorption of the flying sword, this stone actually exuded a very mysterious aura.

But.

As soon as this aura was released, a terrifying suction force immediately emanated from the emerald green sword bamboo, integrating this aura into itself.

Lu Qingshan sensed it carefully, and was pleasantly surprised to find that the flying sword had become a little stronger, although it was only a trace, but it was much stronger than using Yuan Qi to nourish it.

If he could digest all of this stone, Lu Qingshan would no longer dare to imagine the power of the flying sword.

Half an hour later.

Lu Qingshan and the Black Fire Bull looted all the treasures in the treasure house of the Yinyang Cave, and none of them were left behind.

It's just that.

Lu Qingshan searched the entire treasure house of the Yin Yang Cave, but he didn't find Gu Yuan Dan, which made Lu Qingshan feel a little regretful in his heart.

The Black Fire Bull raised his head, grinned, and said, "Gu Yuan Dan, I'm afraid that only those saint sect lords, or half-saint families, are possible. This yin-yang cave does not have it, but it is expected. However, you don't have to worry too much, although this Yin Yang Cave does not have Gu Yuan Dan, I have already found the materials to refine Gu Yuan Dan, give me a little time, I will definitely be able to refine it!"

Listening to the words of the Black Fire Bull, Lu Qingshan breathed a sigh of relief.

Si Xuan's cultivation is too fast, resulting in a very unstable cultivation, an unstable foundation, and there is no big problem in a short period of time, but after a long time, many problems will appear, and it is even possible to go mad.

Lu Qingshan didn't want to see Si Xuan like this.

Meantime.

The little mouse didn't know how many spirit fruit elixirs it had eaten, its belly was already bulging, and when it walked towards Lu Qingshan, its whole body swayed.

Lu Qingshan deeply suspected that the little mouse would suddenly fall to the ground.

Immediately, Lu Qingshan hurriedly stuffed the little mouse into his arms, and at the same time was surprised to find that the little mouse seemed to have eaten other treasures, and there was a very powerful aura in his body.

"The creation of the little mouse is not shallow......" Lu Qingshan smiled slightly.

Half a day later.

Lu Qingshan, Si Xuan, and the Black Fire Cow left the Yin Yang Cave together.

It wasn't until they left that the monks in the Yin-Yang Cave collectively cheered.

The strength of Lu Qingshan and Black Fire Bull was too strong, and they were afraid that Lu Qingshan would not be satisfied and kill them all.

But.

When they came to the treasure house of the Yinyang Cave under the leadership of the three seriously injured elders, they all cried.

The treasures that the Yinyang Cave had managed to accumulate for hundreds of years had all disappeared......

A few days later.

A piece of news came out.

Lu Qingshan took a woman and suddenly drove to the Yin-Yang Cave and killed the cave master of the Yin-Yang Cave, and his brute beast killed the Taishang Elder of the Yin-Yang Cave.

Afterwards, Lu Qingshan ransacked the treasure house of the Yinyang Cave, where the treasures that had been accumulated for hundreds of years were all gone.

After hearing this, many monks immediately organized a team and looked for Lu Qingshan's figure everywhere.

Meantime.

In a very remote valley.

The Black Fire Ox was refining the pill, and there was an extra Dan furnace in front of him, and the fire under the Dan furnace was burning vigorously, and he could faintly smell the smell of medicine in the Dan furnace.

"If I say that we slaughtered the entire Yin-Yang Cave, they are not a good thing anyway! It's good now, many people know that we have ransacked the Yin-Yang Cave, and once we show up, I'm afraid many people will rush up!" said the Black Fire Bull.

Lu Qingshan stood with his hands in his hands, staring into the distance, without words.

It wasn't until a long time later that Lu Qingshan said slowly: "I understand the truth, but if you really want me to kill one by one, I still can't accept it in my heart." As for those who want to seize the treasure......"

(End of chapter)