Nie Fei and the old man each had their own ghosts, and walked into the palace one after the other, Zhu Yuan knew what Nie Fei was thinking, and followed him closely along the way, and at the same time was secretly wary of the old man.

The moment he stepped into the palace, Nie Fei's ears rang with the system's prompt sound again.

"Ding! Player Nie Fei is welcome to enter the special secret realm - the Instrument Spirit Palace. ”

Instrument Spirit Temple? Since this is the Instrument Spirit Palace, most of the kings of the Instrument Spirit Beasts mentioned in the secret realm quest will appear here, right? Nie Fei couldn't help but guess.

When Nie Fei clicked on the system map, he couldn't help but be stunned, I'll go! What's going on? Why is the map dark? Something is wrong with the system? Or is it because this is a special secret place that the map can't show at all?

Wrong! The previous Spirit Hall of the Five Elements Attribute is also a special secret realm, and the system map doesn't still show the terrain? Then why is this Instrument Spirit Hall not displayed on the system map?

Nie Fei became anxious, if there was no indication of the system map, his eyes would be dark, and he couldn't figure out the direction at all, if it was okay in normal times, but now Nie Fei and Zhu Yuan had an old man in the Jindan period eyeing him, how could this be good?

"I can't imagine that in this large-scale Xuan-level secret realm, there is actually a special small secret realm, hehe, there must be some heavy treasures hidden in it!" The old man also walked into the palace.

Nie Fei's eyes lit up when he heard this, that's right! Mysterious Secret Realm! This is a Xuan-level secret realm, and its own system map only has a primary secret realm surveyor installed, which can only display the map of the yellow-level secret realm!

It's no wonder that the system map was not working before, and even some of the instrument spirit beasts were only displayed by the system map when they arrived in front of them, and it turned out that the version of the secret realm surveyor was too low, and it couldn't keep up with the rhythm of the Xuan-level secret realm!

Thinking of this, Nie Fei quickly clicked on the system VIP store and found an intermediate secret realm surveyor, but this thing costs 5,000 ingots, where does Nie Fei still have ingots now? What to do?

"Boy, what are you still rubbing? Let's go? The old man looked at Nie Fei as if he was in a daze, and couldn't help but urge.

Nie Fei raised his eyes and looked, in the empty hall, there was only one staircase leading to the bottom, this instrument spirit hall should be the same as the spirit hall of the five elements attribute, it must be a labyrinth on the basement floor!

"Let's go." Nie Fei said to Zhu Yuan beside him, and then slowly walked towards the staircase, and at the same time, Nie Fei secretly rummaged in his spatial ring.

At this time, you must find something to recycle to the system, and after obtaining the ingots, hurry up and upgrade the version of the secret realm surveyor!

Looking around, Nie Fei finally stared at a medicine box, which contained three herbs, a red blood grass, a fairy spirit flower, and a holy spirit grass.

After a little hesitation, Nie Fei took out the red blood grass and fairy spirit flowers, and after recycling them to the system, Nie Fei suddenly obtained 20,000 yuan treasure!

The reason why he chose to recycle these two herbs was because Nie Fei's space ring contained a Red Blood Pill and a Fairy Spirit Pill, and the Holy Spirit Pill, which was a healing elixir, had already been used up by the wind chimes when he was breaking through the Divine Machine Peak.

Nie Fei left the Holy Spirit Grass just in case, if he needed the Holy Spirit Pill one day, he could also find an alchemist to refine the Holy Spirit Grass into an elixir to use.

After spending 5,000 ingots to buy an intermediate secret realm surveyor, as soon as the system map lit up, the terrain of the Instrument Spirit Hall was clearly displayed, and Nie Fei suddenly breathed a sigh of relief, and his heart became confident.

After thinking about it, Nie Fei spent another 10,000 ingots to buy an intermediate treasure hunting radar, and at this moment, Nie Fei's shotgun was replaced by a cannon and a new set of detection equipment!

Secret Realm Explorer (Intermediate): Auxiliary item, a special item used to detect the terrain of the mysterious realm, price: 5000 ingots.

Treasure Hunt Radar (Intermediate): Auxiliary props, used to detect various natural and earthly treasures within a radius of 10 kilometers, and give the specific location display on the system map, price: 10,000 ingots.

There was only 5,000 left in the 20,000 yuan treasure in an instant, and Nie Fei was ready to keep this ingots in case of emergency.

After entering the basement layer, as Nie Fei expected, this is an underground labyrinth, on the complex topographic map, dense yellow dots are scattered in all corners, the exit of the maze is located in the northeast, and in the northwest corner of the maze, a big red dot appears.

Seeing this, Nie Fei had a plan, the red dot represented an extremely dangerous enemy, why not let the old man meet this red dot, and then he and Zhu Yuan took the opportunity to sneak from the exit of the maze to the next floor to have a look?

However, how to fool the old man to fight against the red dot? Nie Fei thought hard again......

"Huh? The spirit beasts here will actually drop blue spirit beads! Zhu Yuan exclaimed.

Just now, the old man easily killed a lone instrument spirit beast and obtained a blue instrument spirit bead.

"Maybe the spirit beasts in here are more advanced, right?" Nie Fei took over Zhu Yuan's topic casually.

"Hehe, these spirit beasts have reached the strength of the early stage of Jindan, you two little dolls should be careful, don't be careless, lose your life!" The old man said mockingly.

Hearing the old man's words, Nie Fei's heart moved, and then he pretended to be worried and said: "Senior, the spirit beast in this is no longer something that the two of us rookies in the Dan stage can deal with, for the sake of safety, I want to quit." ”

"No! You are not allowed to go anywhere until you find the treasure! The old man's eyes widened and he said threateningly.

"In this way, let me draw a road map, senior, you can follow this route, you can find a secret room, there is a sarcophagus in the secret room, and there may be the treasure you said in the sarcophagus." Nie Fei proposed.

"How do you know about this chamber? How did you know there was a sarcophagus in the chamber? The old man asked vigilantly.

"I am a personal disciple of the Great Elder of Xuanmen, and the family master has entered a similar secret realm, all of which I learned from her, otherwise how would I know the way to break into the formation?" Nie Fei had already thought of an excuse.

"Oh? You've all made it this far, are you willing to give up the treasure you're about to get? The old man still did not let his guard down.

"The family master once warned me, saying that my current cultivation is not enough to deal with such a secret realm, and strictly asked me not to enter without permission, I couldn't help but be curious for a moment, broke through the formation, and came here, and now I regret it." Nie Fei explained.

"Don't be afraid, with me here, I will definitely be able to keep you safe." The old man assured.

"But I don't dare to disobey the master's order, I have to go back, it's a big deal, we don't want the treasures in here, okay?" Nie Fei said with a sad face.

"Otherwise, in this way, you send me to the entrance of the secret room, and then you go back the way you are, which is also my final bottom line!" When the old man heard that Nie Fei took the initiative to give up the treasure, he was overjoyed in his heart, and at the same time made concessions.

Nie Fei hesitated for a moment, and finally nodded reluctantly......