At this time, in the castle hall, there are a total of 3 7th-order demons, and 1 8th-order demon clan, and there is a strange stone pillar in front of them, revealing a height of about 3 meters and a width of more than 5 meters.

These 4 top masters, each sitting in a direction, arched and guarded this strange stone pillar.

In addition to these 4 top masters, in a room in the square of this castle hall, there is also a powerful aura hidden in it, which is the demon clan of the 9th Order Demon Saint that Zhou Su guessed before, thinking that this is the guard who specializes in protecting the princess of the royal family.

Except for these 5 demons, there are no other demons in this huge castle.

But the formations in this castle are far more than a few 7th-order and 8th-order formations, there are hundreds of 6th-order formations and more than 1,000 fifth-order formations.

Even if there were no Demon Protectors, just this one castle, without more than a dozen 8th-order Demon Venerable powerhouses, I am afraid that even the castle's defenses would not be able to be broken.

Judging from their current situation, that strange stone pillar is the treasure they guard, and in addition to the fact that there is no demon here except for the 5 demons, her Royal Highness the princess who thought of them had already entered it to find an opportunity.

Zhou Su did not hesitate, and hurried towards the hall, perfectly avoiding all the formations along the way, and came to the front of the castle hall at an extremely fast speed.

The door of the castle hall was closed, and Zhou Su naturally couldn't just push the door openly, but entered through an open window on the top of the building, and came to the hall in a short time.

Entering the hall, Zhou Su had already expected the degree of luxury in it, but when he actually entered, he couldn't help but be shocked by the luxurious decorations.

The top of the head is inlaid with a dazzling stone about a meter in diameter, and there are countless small dazzling stones dotted on it, its beauty is like a starry sky, and the surrounding walls are also placed with all kinds of countless treasures that will make the monks bleed in the outside world, which is really extravagant!

Zhou Su quickly retracted his mind, and looked at the four people sitting in the center of the hall, he sat cross-legged with his eyes closed, and there was no change from beginning to end, if it weren't for the bursts of magic fluctuations on their bodies, ordinary people would probably think that they would have sat here long ago.

These four people sit in a peculiar position, and their breaths are connected to each other, forming a 7th-order formation, plus there are several remaining 7th-order formations within them, as well as the 9th-order Demon Saint hidden upstairs, and this entire castle, it can really be called impregnable!

However, these 7th-order and 8th-order formations, in Zhou Su's eyes, had a lot of flaws, and they did not form an obstacle at all.

Zhou Su didn't alarm the few strong people guarding here, and walked straight towards the middle column, passing through layers of formations during the process, and only a moment after Zhou Su came to the edge of the middle column.

Zhou Su did not walk up rashly, but leaned over to check on the side, just at a glance, Zhou Su had already determined that the formation carved on the cylinder was the same as he guessed, it was a teleportation formation, and there was no other use.

As for where he would teleport after using this teleportation array, Zhou Su didn't know, after all, even if there were coordinates, Zhou Su didn't know where that coordinate was.

However, it should be a secret realm, otherwise there would be no need to be so troublesome, and this kind of teleportation array would be specially left.

Zhou Su stepped on the cylinder step by step and walked to the middle of the cylinder array, because the groove of this formation was already full of the best magic stones needed, Zhou Su did not hesitate to start the formation directly, and suddenly a white light flashed, Zhou Su had disappeared from the column, and when he opened his eyes, he came to a secret room surrounded by candlelight.

In the castle hall, the formation on the column was activated, and the magic fluctuations on it instantly alarmed the guardians sitting in all directions, they all looked towards the column, only to see that after a white light, there was nothing on it, and the four of them frowned, and before they could speak, a figure had appeared on the column, and looked carefully.

The 8th-order Demon Venerable sitting in the north asked respectfully, "Master Species, have you found anything?"

The Demon Saint ignored him and continued to inspect the formation on the cylinder, and after a long time, he said in a deep voice, "The formation has been activated, but there is no other discovery in the slightest. ”

A 7th-order demon sect said, "Could it be a rat that slipped in?"

The 9th-order Demon Saint's eyes sank, and he glanced at the four people sitting there with a fierce gaze, and saw that these four people were terrified, so he withdrew his gaze and said slowly: "It seems that it is very likely to be like this." However, since I can perfectly avoid all the formations, and I have escaped my divine sense, it seems that there are some means. ”

The 8th-Order Demon Venerable gritted his teeth and said, "It's a pity that we can't go in, otherwise if I meet that mouse, I will definitely make him regret living in this world!"

The 9th-order Demon Saint glared at everyone present fiercely, and said sharply: "You guys show me the cylinder, if any more accidents happen, I will make you regret living!"

When the other four demons heard this, they stiffened, lowered their heads and responded, "Yes!"

The 9th-order Demon Saint snorted coldly, and with a wave of his hand, he disappeared from the hall, and came to the outside of the castle to start checking, after a long time, the inspection was fruitless, so he could only return to his room angrily, and put all his attention on the column, as soon as the mouse came out, he would immediately take action to catch it, and force him to ask for a magic weapon, which could avoid the treasure of the 9th-order Demon Saint's divine sense, and even he was very tempted.

......

In the chamber, there was nothing but an oil lamp on the wall, except for a dark passage in front of it.

Zhou Su didn't go rashly, but released his divine sense to probe inward, and in an instant, Zhou Su finished exploring this passage.

There is nothing else in this passage, just a simple passage, and there is a door at the end of the passage, as for what is behind the door, Zhou Su is not clear, because that door prevents Zhou Su's divine sense from continuing to explore.

Come to think of it, after that door, is the destination of the teleportation array.

Zhou Su didn't continue to stay in this secret room with only a little light, and stepped into the passage and walked inside.

There was no darkness in the passage, and ordinary 5th and 6th order cultivators couldn't see anything when they entered, but Zhou Su was different, he had cultivated the Divine Power Purple Pole Demon Pupil, and although the cultivation time was not long, he could easily see things in such an environment.