There is also a large open space on the outside of the Frost Tower, and the center part is the real Frost Tower.

Yan Yu followed the old woman's gaze, and saw that in the southwest direction of the Frost Mourning Tower, there was an entrance to the underground, surrounded by heavy guards!

Sure enough, on top of the three-story ladder prison, there are even more advanced dungeons, which are built under the nose of the cold sky!

Yan Yu and the three of them retracted their gaze and felt a trace of pressure.

This Frost Prison is worthy of being known as the most terrifying prison in the Demon Domain, not only is the location erratic, but the interior is even more impregnable, just sneaking in took Yan Yu so much thought, and now it is even more difficult to rob the prison!

The ladder prison was enough for Yan Yu to bother with, and now another dungeon had appeared......

This matter has to be considered in the long run.

Fortunately, when Yan Yu pleaded Zhou begging them before, he put in a lot of effort, otherwise in terms of time, Yan Yu would not be allowed to think about it in the long run.

"My lord, is there anything else you want to ask?" The old woman flattered.

"It's okay."

Yan Yu retracted his gaze, but just happened to notice that a team of centaurs had been sent into the dungeon with food.

The corners of his mouth rose slightly, and he said, "Hurry up and lead the way, don't let Madame wait for a long time." ”

"Yes, sir."

The old woman led the three of them into the tower.

The Frost Mourning Tower has five floors, and the bottom two floors are the residences of the subordinates, of course, not all the subordinates live here, but only the subordinates who specialize in serving Cha Tianhan and his wife will live there for convenience.

The third layer was the meeting place of Sha Tianhan, and at this time, Yan Yu sensed the terrifying momentum coming from the third layer, presumably Cha Tianhan, Zheng Zhenwu, and the other three demon kings, all of whom were inside.

The fourth floor is the real residence of Sha Tianhan, and his seriously ill wife is in it.

"What's in this fifth floor?" Master Cao suddenly asked.

The old woman's face changed, and she hurriedly whispered: "My lord, we don't know what is in the fifth layer, and we have never been able to ask, even if the adult is sent by His Royal Highness, please don't ask the demon king about the fifth layer, otherwise it will lead to death!" ”

"So serious?" Master Cao grinned, and didn't dare to ask any more.

Yan Yu looked up at the passage leading to the fifth layer, and also felt the power of the formation, but there were not many masters of the Demon Clan's formation, and the formation arranged was far less powerful than Wen Muwan's, so if Yan Yu had the opportunity, it would not take much time to crack it.

"The three of Zhou Qi didn't go to the clouds and stars, but disguised themselves as famous doctors to come to the Frost Mourning Prison, they must have other plans, could it be that what they want is hidden in the status layer of this Frost Mourning Tower?"

Yan Yu calculated in his heart:

"No matter what, the first task is to ensure their safety, and if you have the strength to rescue them, it's not too late to explore the secrets of the fifth layer."

At this time, the old woman had already let people into the house to report, and after a while, the door of Mrs. Sha Tianhan's room opened.

Yan Yu and the three were sent into the house.

I saw that the decoration in the house was very good, so that Yan Yu and the others felt like they had gone to the mansion of the nobles in the underworld for a moment.

There was a large bed in the room, and there was a curtain around the bed, and his wife was lying on the bed, and the curtain blurred her vision, and her appearance could not be seen clearly.

However, Yan Yu could vaguely notice that Cha Tianhan's wife was far less tall and sturdy than those demon women, and could even be said to be short and weak, maybe only about one meter seven tall.