"Senior, isn't the Inner Mansion over there?" Looking at the palace group that was getting farther and farther away below, and gradually no longer visible, Xia Mu asked with some doubts.

Hearing this, Long Kui smiled faintly and said, "Who told you that the most valuable thing in this is placed in the inner mansion?"

"This ......" For a while, Xia Mu was a little speechless.

Indeed, no matter from what point of view, the most valuable thing will never be on the table, but that Zhenlong Immortal Monarch was dying back then, and he still has so much thought to hide the treasure?

Puzzled, Xia Mu shook his head, he had to hide this question in his heart, and at the same time looked up, he was very curious about what kind of place the true treasure of the True Dragon Immortal Monarch was.

After rising for a quarter of an hour, Xia Mu's eyes suddenly brightened, and a white staircase appeared in front of him and Nightshade, and the open-air square also stopped rising with a bang after flying to the junction with the white staircase.

And so it was. Nightshade showed a hint of understanding on her face when she saw the white staircase path, and then walked slowly up the white staircase.

Seeing this, Xia Mu naturally followed honestly.

The white staircase didn't know where it led, but it continued to extend upwards in a spiral, and Xia Mu spread his divine thoughts while moving forward cautiously, always paying attention to the movements around him.

Fortunately, with nightshade in front of him, Xia Mu was not too nervous.

In the void, there is a cold wind blowing from time to time, but other than that, there is no strange happening, but the further you go, the colder the wind blows, it is really hard to imagine that this is underground.

"Senior, isn't there any formation prohibition to protect here?" After walking for a while, nothing happened, Xia Mu couldn't help but ask with some doubts.

Logically speaking, such a place should be full of crises, and nothing is happening like this, but it is a little unsettling.

"This is where Zhenlong's cleverness lies, if there are prohibitions and formations here, then because of the relationship between the formation or the operation of the prohibition, there will inevitably be spiritual power fluctuations emitted, so it is easy for people to discover the existence of this place, so if you don't do anything, it is the best cover and hide for this place. If it weren't for my sense of that thing, I wouldn't have been able to discover the existence of this place so easily. Nightshade explained lightly.

"I see. Xia Mu nodded.

At this moment, the two of them finally reached the end of this staircase, and a floating island appeared in front of them.

Xia Mu followed the nightshade onto the floating island, and suddenly opened up in front of him, and an extremely open medicine garden appeared.

This medicine garden covers an area of several acres, and there are many spiritual flowers and spiritual grasses planted in it, although most of Xia Mu doesn't know it, but the part he knows alone is already of immeasurable value.

What's even more precious is the year of these spirit flowers and spirit grasses, which have survived from the immortal ancient period to the present, the age of the medicine is simply not too high, and some of the spirit flowers and spirit grasses in them don't even know how many generations they have reproduced.

At a glance, the medicinal age of these spiritual flowers and spiritual grasses is generally more than 10,000 years, and the reason why it is 10,000 years is because the limit medicinal age of some spiritual flowers and spiritual grasses is 10,000 years, and they will begin to wither and wither after 10,000 years.

In addition, in the depths of this medicine garden, there are several tall spirit trees faintly planted, but because the distance is a little far, Xia Mu can't see what kind of spirit tree it is for a while, but even if he sees it clearly, I'm afraid he may not be able to identify it.

When Xia Mu's gaze extended a little more forward, his eyes lit up.

But more than 100 zhang away, there is a spiritual well that is constantly poaching and gushing out of the spring.

"Fountain of Life?" Xia Mu muttered to himself, the spring water gushing out of the spiritual well contained an extremely rich life essence, which was probably the root of this medicine garden's ability to survive from the Immortal Gu period to the present.

However, Xia Mu's attention was quickly diverted from this fountain of life, because in the center of the spring, there was a golden tree growing straight, and seeing this golden tree, Xia Mu's eyes flashed a faint light.

I still remember that when he broke into the Ten Thousand Realms Tower, he had obtained a golden ancient tree leaf in the Taixu Cloud Realm, and later after he returned to the Qiankun Holy Courtyard, he wanted to consult the classics to identify the origin of the golden ancient tree, but he never found the slightest clue, and he never thought that after so many years, he encountered a golden ancient tree again.

This time, there was a saint by his side who had survived the Immortal Ancient Period, so it was impossible for him not to know the origin of this tree.

Thinking of this, Xia Mu immediately asked, "Senior, do you recognize the origin of that golden ancient tree?"

"That's the Golden Crow Divine Tree! Looking at this situation, it should be millions of years old. Different from ordinary spirit trees, the longer the medicinal age of the Golden Crow Divine Tree, the smaller its form becomes, and it is one of the few reverse growth elixirs. The golden leaves growing on its branches contain the blood of the golden crow, as long as you boil one and take its liquid, it can at least increase your understanding of the law of flame by two or three percent. As she spoke, she stretched out her palm and gently grabbed at the golden crow sacred tree, and suddenly the golden leaves on the small tree fell off one after another, rolling into a stream of golden leaves and flying towards her.

"No, don't call me stingy, those who see it have a share, and these ten Golden Crow God Leaves will be given to you. With a stroke of his finger, ten golden ancient leaves fell in front of Xia Mu.

Seeing this, Xia Mu first thanked him, and then took out a jade box and carefully put ten Golden Crow God Leaves into it.

Looking at the ten Golden Crow God Leaves in the box, his eyes flickered, he who cultivated the Blood Demon Sutra could completely refine the blood of the Golden Crow in these ten Golden Crow God Leaves into the blood of all spirits, so that he could summon the Golden Crow Blood Beast, and it would not be weaker than the Vermilion Bird Blood Body in terms of combat power.

After hesitating for a moment, Xia Mu still decided to put away the jade box first, as for the use of these ten Golden Crow God leaves, it is not too late to decide in the future, now that he is in such a treasure land, every point is very precious, so don't spend time thinking about these for the time being.

Of course, the big head is naturally Nightshade's, and Xia Mu can only follow behind her to pick some things she doesn't want. Despite this, Xia Mu also made a lot of money this trip, after all, Nightshade was already an eternal saint, and the medicinal herbs above the level of non-immortal were of little use to it, so Nightshade just picked the most precious dozens of elixirs in the entire medicine garden, and then gave the rest to Xia Mu with a wave of his hand.

After digging the entire medicine garden to a depth of three feet, Xia Mufang was satisfied with the center of Nightshade's speechless gaze.

"Senior, where are we going next?" Xia Mu touched his nose and said with a smile.

"Underground, I sensed that my treasure was hidden in the underground center of this island by the True Dragon Immortal Monarch, and most of the real treasures of this Immortal Mansion were hidden there. Nightshade said, pinching a strange magic seal with one hand, and suddenly the entire island began to roar and vibrate, and then, the earth was divided, and a passage to the center of the island's underground was forcibly torn open by nightshade.

The corners of Xia Mu's mouth twitched slightly at this scene, this is the rhythm of forcibly opening a road!

"Let's go, let my sister take you to see how rich the treasure of an immortal monarch-level powerhouse is. Nightshade said first, and then a blue light suddenly rose from its body, wrapped Xia Mu in it, and burrowed into the ground in a flash.

This is the first time that Xia Mu has come into contact with the spell cast by the nightshade so closely, the blue light that envelops him around him feels completely different from the spell he casts, there is no spiritual power fluctuation in it, nor does it have any law power, it seems to be a pure wind power, enveloping him to fly through the sky at extreme speed, that speed is not much slower than the shuttle space, and there is no resistance at all, so that Xia Mu can't help but be secretly surprised.

Qingguang dived all the way and soon came to a depth of about 1,600 zhang directly below the center of the island.

"It's here. ”

Nightshade's words fell, and as soon as the blue light flickered, Xia Mu felt that his eyes were bright, and what caught his eyes was a huge spherical underground space.

In the dome of the underground space, a huge unknown diamond-shaped crystal floated in the air, releasing a faint white spiritual light, reflecting the entire spherical space as bright as day.

The space here is very large, there is no cave, and Xia Mu feels more than twice as large as the island above, and in front of him, a black palace covering a radius of dozens of miles is suspended in mid-air.

"This black palace is exactly the same as the one in the center of the underground palace group before, this True Dragon Immortal Monarch's scheming is really ......" Xia Mu's eyes stayed on the black palace for a moment, and he suddenly recalled that there was an identical black palace in the center of the underground palace group not long ago, so it seems that that one is probably a stand-in forged by the True Dragon Immortal Monarch in order to hide people's eyes.

It's just that what makes Xia Mu puzzled is that Zhenlong Immortal Monarch, who is going to die, why does she have to do so many hands and feet, is there any meaning?

"Senior, why do I think something is wrong, Zhenlong Immortal Jun is a dying person, why do you have nothing to do with so many hands and feet?" Xia Mu said in a secret voice.

"Hehe, who knows, maybe her soul has been hit hard at that time, and she has become a little delirious. Hearing this, Nightshade smiled faintly, but a cold glow quietly flashed in his eyes.

Seeing this chill, Xia Mu knew that his worries were superfluous, it was not that Nightshade was unaware of the strangeness and unusualness in this, but he didn't show it, so it seemed that his previous secret transmission was redundant.

"Let's go, I sensed that the palace was full of very rich treasures, and I thought that the real treasures of Zhenlong were sealed in it. While playing with the key to the Immortal Mansion in his hand, Nightshade slowly flew down in front of the black palace, with a meaningful smile on his face all the time.

When Xia Mu heard this, he naturally flew and landed in front of the black palace.