Xiao Chen and the three of them followed the little fox all the way inside.

After about three or four minutes, I found that the little fox was spinning in the middle of the hole, as if he wanted to lie on the ground, but his pampered claws couldn't pull out the hard ground, and he was so anxious that he turned around.

Seeing Xiao Chen coming, the little fox immediately showed a pitiful appearance, and made a "woo ......" sound, as if Xiao Chen was asking for help.

"In the center of the earth?"

Xiao Chen groaned.

The little fox is even more sensitive to the aura and spiritual source than him, and he will definitely not make a mistake in judgment.

Beneath the center of the earth, there must be an extremely amazing spiritual source, which is the source that causes the spiritual energy of this place to be rich.

"Wait a minute!"

Xiao Chen shouted at the little fox, and regardless of whether it could understand it or not, he surveyed around the cave.

Then, he took out a few stones he had collected and placed them in suitable places around him to construct a spatial framework.

"Xiaochen, what are you doing?" Ye Yufei asked curiously.

"Just make a simple closed formation!" Xiao Chen replied.

"Throw a few stones to set up a formation?" Ye Yufei was surprised.

Of course, it seems that it is just a few stones, but in fact, there are many profound truths in it, the five elements gossip, Qimen Dunjia, ever-changing, not just a few words can be explained. And this stone is not an ordinary stone, it has special properties!"

"I see!" Ye Yufei actually didn't understand at all, but she could only nod in a similar way.

"That's it!" Xiao Chen made the arrangements, and said to Xiao Yingxue, "Yingxue, break that place!"

When Xiao Yingxue heard this, her little hand was raised, and the demon knife appeared.

Qi condensation, spirit gathering, a straight down.

Rumble!

The demon knife poured directly into the ground.

Although the blade of the demon knife is only seventy or eighty centimeters, the sword qi extends for hundreds of zhang and goes straight to the center of the earth.

The center of the earth was destroyed, and the entire cavern shook and seemed to collapse at any moment.

However, at this time, the quadrangular formation arranged by Xiao Chen came into play, forming an isolated space of thirty or forty square meters.

Allowing the surrounding stones to fall and the stone walls to collapse have no effect on this space.

"Sakura, it's almost there!" Xiao Chen reminded.

When Xiao Yingxue heard this, she held the demon knife in her little hand and pulled out the demon knife with force.

Suddenly, the spiritual qi of the earth that was disturbed by the sword qi erupted like a volcano, and it gushed out in an instant, spilling over the entire space.

Due to the high concentration, the aura is slowly liquefied, making it feel like bathing in water.

"Ahhhhhhh......h

The little fox instantly cheered, jumping up and down among the three of them, very lively.

"So you're going to make other sounds?"

Xiao Chen smiled dumbly.

The little fox seems to be making a "yaa" sound for the first time, and he used to only "woo...... and pretend to be pitiful.

"Xiaochen, its tail has grown!" Ye Yufei said in surprise, pointing to the little fox's tail.

"Well, I saw it!" Xiao Chen nodded, he noticed the change in the little fox's tail earlier than Ye Yufei.

In other words, the main purpose of his search for this place of abundant spiritual energy was to see if he could accelerate the growth of the little fox's fourth tail.

Now, the results are amazing!

The little fox breed is by no means unusual, it may only have one tail when it is born, and only then slowly grow three.

Obviously, it is capable of evolving on its own!

It's just that the outside world lacks aura, and after it goes to the outside world, its growth has become slow, and it has not changed much for two years, and it has not shown signs of growing a fourth tail until recently.

Now in this aura that is more than ten times richer than the outside world, the little fox's accumulated growth function quickly exploded, and its tail changed almost once in a while.

"Sister, Yingxue, don't be idle, take this opportunity to absorb aura to practice, otherwise so much aura will be too wasteful!" Xiao Chen reminded.

"Hmm!"

Ye Yufei and Xiao Yingxue found a clean and comfortable position in the cave formation, and began to run the exercises that Xiao Chen taught them, absorbing the surrounding spiritual energy to cultivate.

Xiao Chen had no intention of cultivating, and quietly helped them protect the Dharma by the side, taking care of the little fox by the way.

Ye Yufei and Xiao Yingxue's cultivation is equivalent to retreat, unable to move, unable to speak, and operating the exercises wholeheartedly.

But the little fox is different, as long as it plays in the aura, it can continue to absorb the aura, and the conversion rate is very high, which is better than any cultivation exercise.

......

On the third day, the little fox's fourth tail grows ten centimeters.

On the seventh day, the little fox's tail grows ten centimeters again.

Half a month later, the little fox's four tails were basically formed, and he fell into a deep sleep again.

About twenty days later, the little fox woke up, marking its successful evolution into a four-tailed spirit fox, and it actually had a lot of spiritual power fluctuations on its body.

Xiao Chen understood that this was the awakening of the little fox's talent.

Wait until the five-tailed six-tailed, or even the seven-tailed eight-tailed one behind, it will have a lot of special abilities.

Compared with humans, it has a huge advantage over heaven and earth spirit creatures!

Of course, those are all afterthoughts, for now, the little fox is just equivalent to a monk in the Qi refining period, and he is pitifully weak.

"Little fox, you have grown a fourth tail, although your ability has not increased much, but your bloodline should have strengthened a lot, come and let me see!" Xiao Chen hooked his hand at the little fox who was playing on the side.

As if sensing the danger, the hair on the little fox's body stood up, staring at Xiao Chen vigilantly, and at the same time making a cry of "woo ......", pretending to be pitiful.

But obviously, this trick was useless to Xiao Chen before, let alone now.

"Proper blood donation is good for the body and can promote blood circulation. Don't worry, it'll be fine!"

Xiao Chen said, casting a spirit restraint technique.

No matter how fast the little fox is, there is no way to escape in the face of the spirit restraint.

"Bear with it, it may hurt a little!"

Xiao Chen raised his hand to condense the wind blade, and with a wave of his hand, he broke a hole in the heel of the little fox.

"Suck!"

With air suction, the purest spirit fox essence blood was sucked out from the little fox's wound and put it into the porcelain bottle that had been prepared a long time ago.

"Woo ......"

The little fox bared his teeth in pain and burst into tears.

At this time, Ye Yufei and Xiao Yingxue opened their eyes one after another.

Ye Yufei got up and asked, "Xiaochen, what are you doing?"

"Take a little blood from it and use it for refining medicine!" Xiao Chen sealed the bottle cap, touched the little fox's head with his hand, and said with a smile, "Hard work!"

The confinement disappeared, and the little fox jumped into Ye Yufei's arms with a "whoosh", poked out half of his head, and pretended to be claws at Xiao Chen.

Ye Yufei touched the little fox's head and felt funny.

She couldn't see that the little fox was actually afraid of Xiao Chen at all, and she didn't hate Xiao Chen.

Because it obviously knew that Xiao Chen had been refining medicine with its blood, but it had never thought of running away, and it usually frolicked with Xiao Chen.

Pretending to dance at Xiao Chen is just a way for it to communicate with Xiao Chen.

(End of chapter)