Of course, the reason why Lin Fan was really disdainful of these treasures was because he found something in the treasure that excited him.

This was a piece of black spar that Lin Fan undoubtedly found in a wooden box after taking the Dark Arbitration Department's base camp.

This spar is not an artifact magic weapon, but it is rarer than any spiritual weapon, and even in the cultivation realm, it is scarce.

This spar is purple all over, similar in shape to the Xuanyin Stone, but the difference is that this spar is transparent throughout, and there are many strange runes on it, which contains a huge amount of spiritual power, and even the spiritual power contained in a spirit stone has to catch up with the amount of spiritual power condensed by the Spirit Gathering Array.

This stone is called Amethyst Stone, if ordinary people get this thing, they will definitely not know its true use, but in the eyes of the masters of the cultivation realm, this is a treasure that is not yet good.

If you want to refine a more advanced magic weapon, you need a higher level of materials, and this spirit stone is the magic weapon material of the Wushang Immortal Product, and the energy contained in it is comparable to the Jindan period, and the magic weapon condensed by it can even kill the cultivators of the Jindan period.

But if you want to refine such a powerful magic weapon, you need at least hundreds of amethyst stones, and obviously this one is not so useful.

Lin Fan looked at this spar and gradually fell into contemplation.

"The rune mark on this amethyst stone was obviously added by a cultivator, it seems that this thing is a kind of ritual artifact, or a key needed to open a certain altar seal."

"Is it ......?"

Lin Fan's pupils shrank suddenly, and a wave of joy poured out of his heart.

"Isn't this the key to the Treasury of the Dark Arbitrator?"

The Dark Arbitration Department has existed for thousands of years, and the person who created this department was the Demon Hou Yi, so you can imagine how many treasures will be collected over thousands of years.

If you can find such a treasure trove, it will be a huge reward.

No wonder since the capture of the Dark Arbitration Department, Lin Fan has only found some jewels and ordinary utensils, and there are no magic weapons and spiritual objects that have surprised him at all, and he has always wondered, now it seems that there must be a hidden treasure house in this Dark Arbitration Department, and even their own people have not known the existence of this place for thousands of years.

Thinking of this, Lin Fan couldn't hide the ecstasy in his heart.

However, even the people of the Dark Arbitration Department did not know about the place, and it was naturally difficult to find it, so he released his divine thoughts and began to search around.

It stands to reason that powerful artifacts will have divine power emitted, even if it is only weak, it can't escape Lin Fan's divine thoughts, but he released his divine thoughts for hundreds of miles, and there was still no gain, which made him very confused.

"Did you guess wrong?"

Just as Lin Fan was thinking about it, Leogo suddenly came in a panic.

"Mr. Lin, we found a prisoner in the prison of the Dark Arbitration Department."

Lin Fan frowned slightly and immediately spoke.

"Bring someone to me."

A prisoner who can be imprisoned for a long time by the Dark Arbitration Department must not be an ordinary person, and they don't kill him, obviously wanting something from him.

Thinking of this, Lin Fan faintly showed a smile.

Soon, a dirty old man was brought by Leogo and immediately knelt in front of Lin Fan, looking at Lin Fan trembling and fearful.

"Lord Arbitrator, please don't kill me!" The old man trembled and begged for mercy.

"I'm not an arbitrator, the arbitration here is dead." Lin Fan opened his mouth lightly, walked to the old man's side and asked.

"Who are you, and why are the people from the Arbitration Department holding you?"

The old man responded, "My name is Monroe, I am an ordinary city defender here, my ancestors built this palace for the arbitration department, and repaired and built it here for generations, not long ago, a man in a black robe suddenly came, I had to say what the entrance to the underground palace was, I said I don't know, they tortured me to force me to say, I have been tortured here for almost a year, please let me go, I really don't know anything." ”

Sure enough, just as Lin Fan thought, there must be someone in the arbitration department looking for the entrance to this treasure house.

"Since your ancestors repaired this palace, you must have the architectural plan of this place in your hands, and you think about it carefully, if there is anything special about it, or if you think it is unreasonable to build." Lin Fan asked.

The old man thought for a few seconds, then suddenly looked up and said.

"My lord, when you say this, I remember that in the cellar of this palace, there is indeed a very hidden passage, but I have been to this passage, and I have also told the adults of the arbitration department, and they have also sent people to find it, and it is a dark passage, and it leads to a hundred meters underground, and there is nothing at all."

100 meters underground?

It's no wonder that his divine thoughts didn't notice anything, and he didn't expect to build a treasure house in such a place.

From the other party's words, Lin Fan saw through the problem at a glance.

Just because a person who can't find the entrance to the treasure trove doesn't mean he can't find it.

"Take me there."

Lin Fan got up and said.

Hearing this, the old man immediately took Lin Fan to the entrance of the underground passage, as he said, this seems to be just an ordinary cellar entrance, there is nothing special at all, it has been down to a depth of 100 meters, and the front is a stone room of more than ten square meters, with smooth stone walls on all sides, and there is no more passage.

"My lord, this place is already to the end, the surrounding stone walls have been surveyed, there is no secret door at all, and this wall is also solid, every wall is like steel, it can't be opened at all."

The old man looked at Lin Fan with a trembling face, obviously after he brought the people from the arbitration department here before, he was inhumanly abused when he saw such a scene.

"Hehe, if you don't want to cover up something, you will definitely not make this place like this, a corridor 100 meters underground, if the end is really just this stone room, don't you think it's redundant?"

Lin Fan smiled coldly and slowly walked to a stone wall.

As soon as his palm lightly covered the stone wall, he saw that the glazed jade body was directly flashing with blue light, and it was directly submerged into the stone wall.

Under the surprised gaze of everyone, Lin Fan's fingers were like knives, and he swiped lightly on the stone wall, as if tearing a piece of paper, and cut a door-like opening on the hard and heavy stone wall.

"This ......"

Everyone was stunned and looked at the scene in disbelief.

"Let's go."

Lin Fan smiled slightly, took the lead and walked in, and retracted the amethyst stone in his hand into the Xuanming Qiankun bag.

The key to this stone wall is this amethyst, but thousands of years have passed, and it is obvious that no one in the arbitration department knows the purpose of this amethyst.

Next, everyone followed the passage and went all the way down.

The whole passage is surrounded by stone walls, just like the passage when it came, but the difference is that there are many strange totems on this stone wall.

Others couldn't recognize it, but Lin Fan could see at a glance that these were the totems of the Demon Clan, and it seemed that the founder of this Arbitration Department was definitely a member of the Demon Clan.

Everyone walked all the way forward, and after walking a few hundred meters, a spacious platform finally appeared in front of them, and in the front section of the platform, two huge bronze doors were horizontal in front of them, like huge iron gates, standing there without moving.

And behind the bronze door, a huge stream of spiritual power seeped out from it like a spring......