On the way to the Frost Tower, Yan Yu saw many different buildings.

There is a training ground for black armor, a canteen for eating, and even a special place for retreat and cultivation, on the back of this Xuanjing snapping turtle, it is not only a small city, but also a sect like the Mountain Gate of the Killing Immortal Gate.

It's no wonder that the Frost Prison is stronger than the other Thirty-Six Demon Cities, after all, there are still ordinary people in the Demon City, but in the Frost Prison, there are only black armor and criminals.

From top to bottom, Frost Prison is full of strong people with cultivation, which is naturally incomparable to other magic cities.

Of course, in addition to the area that belongs to the Black Armor's activities, the bigger one is another strange building.

It was a strange giant building in the shape of a terrace, the whole building was airtight, there was not even a single window, only two exits.

Later, according to the introduction of Hei Jia who led the way, Yan Yu knew that it was the core part of the entire Mourning Frost Prison, that is, the prison part.

The ladder prison is divided into three levels, from one to three, and the prisoners are getting worse and worse - either more serious or stronger.

In short, the first floor is just some ordinary prisoners, the second floor is a little more powerful, and the third floor is ...... It is said that every prisoner on the third floor is guarded by three black-armored powerhouses.

The three black-armored powerhouses are at least in the realm of immortals.

With such a powerful lineup, the guards are at least the prisoners of the Immortal Realm.

Yan Yu inquired about these news, naturally in order to find Yun Nisheng's whereabouts.

If Yun Nishang and them were really arrested in the Mourning Frost Prison, they must have been locked up in the third layer, but Yan Yu felt that it was not so simple, Yun Nisheng and their situation was far beyond that of ordinary criminals, at least it was the same treatment as Geng Xiu!

Otherwise, Yun Nishang would not have a chance to help Geng Xiu escape.

So, Yan Yu asked, "A few days ago, I heard that a criminal escaped from Waishuang Prison. ”

The old woman who led the way paused, frowned and turned back: "There is no such thing. ”

Yan Yu's heart sank, it seemed that when Geng Xiu escaped, Sha Tianhan had not yet made it public.

If they don't say anything, I'm afraid the old woman will be suspicious of them.

"Your Highness has sent us here not just to treat Madame, do you understand?" Yan Yu said coldly.

When the old woman heard this, she was moved.

She hurriedly apologized to Yan Yu, and then said: "Since His Royal Highness wants to know the specific situation, then I will naturally answer everything, but this kind of thing, wouldn't it be more convenient for the adults to ask Lord Fall, why do you want to ask me as a little person?" ”

"On the Commander's side, we will naturally ask, but we just want to probe from you in advance."

Yan Yu thought about it and glanced at Xiao Xuan'er, Xiao Xuan'er suddenly understood, took out a heavy bag of magic stones, and handed it to the old woman.

When the old woman got paid, she didn't care so much, and her eyes were much kinder: "Just ask, sir." ”

"Has Geng Xiu caught it now?"

"Haven't caught it yet." The woman shook her head.

"How did Geng Xiu escape?"

"This kind of thing, only the Demon King of the Heavenly Chill and the Meteorite Ming Commander know, I'm just a subordinate, it's impossible to know about it."

"Okay," Yan Yu asked lightly, "Last question, where was Geng Xiu imprisoned before he escaped?" ”

At this time, Yan Yu and the three of them could be regarded as having truly entered the interior of the Mourning Frost Tower, and the old woman also pointed in one direction and said in a low voice, "It's there." ”