"Boy, have you done what I wanted?" the old turtle's lazy voice came into the ears of the two.

"Didn't reach it, that dared to alarm the seniors. Ye Fei threw out a stone that had been prepared a long time ago, and the sword was decisively operated, and a spiritual power accurately hit the stone, and with a bang, the stone turned into powder and floated in the air.

"How did you manage to do it with such pure spiritual power?" asked the old turtle in surprise.

"The exercises that the younger generations practiced before are quite special, which can compress spiritual power and improve the purity of spiritual power. Ye Fei replied half-truthfully.

"With such a miraculous exercise, you humans can really create miracles. After a pause, the old turtle continued: "Since you have met the requirements, let's go to the third layer to get the follow-up exercises, but you remember, after cultivating the ninth layer of the Overlord Sword Duel, even if you are the descendant of the Overlord Sword Sect, you have to take up the burden of rebuilding the Badao Gate." ”

"Senior Turtle, I also want to rebuild the Badao Gate, but now this place is not suitable for the mountain gate of the Badao Gate, can the younger generation rebuild the mountain gate outside?" Ye Fei was waiting for the old turtle's words, and asked with the situation.

"Change the place and rebuild the mountain gate?" said the old turtle and then fell silent.

Ye Fei stood up quietly and waited, he didn't know what the old turtle thought, he had his own thoughts, since he wanted to re-establish the Badao Gate, then the resources here would definitely be taken away, and the spiritual veins would naturally arrive.

"In the third row of the bookshelf on the south wall, there is a book of elixir treasures, numbered 147, and the spiritual power you used to use to operate the sword gate pushed the book inward. The old turtle's voice sounded again.

Ye Fei didn't ask much, walked to the south wall, followed the number to find the elixir treasure, and did what the old turtle said.

The south wall separates from each side, and a two-meter-wide subterranean entrance comes into view.

"Come in. The old turtle's voice was no longer ethereal, it came from below.

Ye Fei did not hesitate, and entered the entrance with Ye Ling one after another.

Both sides of the passage are inlaid with pearls, and the brilliance flows, exuding a faint purple light.

The passage staircase is about 100 steps, and out of the passage is a huge underground dark river, and the cliffs on both sides of the dark river are shining with crystal light.

The spiritual power here is several times stronger than above, and Ye Fei and Ye Ling stood by the dark river with straight eyes.

Everything in front of him was too shocking, those crystal points of light were not pearls, but spirit stones, even if Ye Fei had been mentally prepared and knew that there was a huge spiritual vein here, but when he really saw it, he was still shocked.

"Come here, all the way to the end. The old turtle's voice came again.

Following the sound all the way forward, gradually Ye Fei and Ye Ling felt a cold aura rushing towards their faces, the further they went, the richer the cold aura became, and the points of light on the cliffs on both sides became more and more dense.

After walking for about 100 feet, he finally reached the end, and a huge altar appeared in front of him, and in the middle of the altar there was a vortex formed by black mist, constantly rotating, looking a bit like a portal.

The altar is connected to sixteen purple-gold chains, eight at the end of which are connected to each side of the cliff.

"Senior turtle, where are you?" Ye Fei turned his eyes around, didn't see the old turtle's body, and asked out loud.

The altar suddenly moved, and the sixteen purple gold chains were suddenly straightened, and a huge head emerged from the dark river.

When he completely surfaced, Ye Fei saw clearly that it was a huge turtle, the altar was built on his back, and sixteen purple gold chains were worn on his shell, this scene was completely different from the scene Ye Fei imagined.

He originally wanted to fool the old turtle out, but now in such a situation, how can he fool?

At the same time, he was vigilant in his heart, looking at it like this, the old turtle was clearly imprisoned here, since he was imprisoned, it couldn't be a Guardian Divine Beast.

The black mist vortex on his back was the source of the cold qi, and when he got close to here, the cold qi could even penetrate the bone marrow, making people extremely uncomfortable.

"Senior, this is?" Ye Fei asked tentatively, and at the same time he was ready to run away at any time.

"Do you know what's on my back?" the old turtle's tone was as lazy as before, but there was not the slightest hostility.

"The younger generation doesn't know. Although Ye Fei had a guess in his heart, he didn't say it, waiting for the old turtle to reveal it himself.

"This is the legendary passage to the underworld. The old turtle's tone was normal, but Ye Fei and Ye Ling changed color at the same time, although Ye Fei had already guessed it in his heart, but the old turtle himself said it, which still surprised him.

"I don't know why this passage is on the back of the senior?" Ye Fei asked with the surprise in his heart.

"In the entire Immortal Cultivation Realm, only my defense can withstand the erosion of the cold aura of the underworld, and no one can suppress this passage except me. The old turtle looked very sad, he had been trapped here for more than 13,000 years, although most of the time, he spent it in a deep sleep, but every time he woke up, he always spent it in loneliness and loneliness.

"Why do you want to suppress it? There is not only one passage between the immortal cultivation realm and the underworld, according to the understanding of the younger generation, there are as many as dozens of passages that communicate with the underworld. Ye Fei asked with a puzzled face.

"It's different, the other passages are all one-way, and only pure soul bodies can enter the underworld through the passages. The old turtle spoke in a low tone, it may be that it was very hard to float like this, and he slowly sank into the dark river.

Although he sank into the dark river, his voice still clearly reached the ears of the two of them: "Thirteen thousand years ago, the underworld suddenly began to invade the immortal cultivation world for some reason, and the spatial node between here and the underworld is the weakest, and the Hades King used the yin qi of the underworld to continuously erode the immortal cultivation realm, and you can see the black mist above, that is the result of being eroded by the yin qi of the underworld." ”

"The Black Mist Forest doesn't seem to be suitable for the survival of the soul body, once the soul form enters, it will gradually dissipate, the true spirit of the underworld is also a soul body, if it is the yin qi of the underworld, shouldn't it be suitable for the survival of the soul body?" Ye Fei quietly took a few steps back, he became suspicious of the old turtle, and his vigilance in his heart was even greater.

"That was to wipe out the army of the true spirits of the underworld who ran to the realm of cultivating immortals, the Heavenly Palace sprinkled the smoke of the soul breaking in the black mist, which caused the soul body to gradually dissipate, and the effective height of the smoke was only three meters, and they laid down a forbidden air array, which completely wiped out the army of the underworld that ran to the world of cultivating immortals. The old turtle explained.

"I see, the predecessors should belong to the fairy world. Ye Fei asked tentatively.

"Yes, I am indeed from the immortal realm, back then, the black mist continued to erode the immortal cultivation realm, attracting the attention of the immortal realm and the heavenly palace, and after exploration, it was found that a large number of underworld true spirits appeared here. The underworld tried to envelop the entire immortal cultivation realm with yin qi, turning the immortal cultivation realm into a place suitable for the survival of the true spirits of the underworld. The old turtle narrated in a flat tone.

Ye Fei didn't interrupt, only listened quietly.

The old turtle continued: "Later, the immortal realm and the heavenly palace joined forces to set up a peerless array here, sealing this passage, they were afraid that the passage would be broken again, and found me with the strongest defense in the immortal realm, and sealed the space passage on my back, and concentrated half of the spiritual veins of the immortal cultivation world here, forming a super-large spiritual vein, which was used as a source of spiritual power for me. ”