Gao Zhen gently grasped the hilt of the Void Condensation Sword, and then slowly turned it, and a clicking sound sounded, and the diamond-shaped keyhole above the bronze round platform also rotated. The direction of the blade was adjusted, the mirror on the blade was facing a different position than before, and the sunlight was refracted to another area, this fan just next to the previous one, facing the second arch.

Soon, Gao Pillow discovered that in fact, the Void Condensation Sword could rotate freely, and it could face a total of nine different directions, and the blade of the sword would be aimed at an arch in each direction, and the fan shape of the sunlight refracted by it also just extended to the front of that arch.

"In other words, each arch corresponds to a fan, and the pattern on the fan is the trend of the corridor behind this arch?" Yi Shuihan guessed.

Gao nodded his head, he seemed to understand how to use the mechanism. It's just that what makes him curious is why the "key" of this mechanism happens to be his Void Condensation Sword? Is there any connection between the two?

Lai Ruoxue lay on the bronze disc on the ground, and without twisting the hilt of the sword once, she checked the pattern on the ground once. As they had guessed, the dark streaks on the fan of sunlight were the movements of the corridors. The nine fan-shapes begin with a straight dark stripe, which refers to the straight and diagonal path downward.

The sun seemed to be setting to the west, the rays of sunlight that came down from the small holes in the dome were tilted, and the fan-shaped map on the ground was blurred. At that time, the three of them had to wait until noon the next day.

Lai Ruoxue sped up, her trouser legs were worn out, and she didn't stop, gesturing with her fingers to try in those dark stripes. However, fortunately, there are fewer forks in the corridor behind each door, but the trend of the corridor behind each door is very different.

The three of them soon discovered that the general style of the corridor behind each door was very different. For example, the corridor behind the first door is basically straight and rarely turns; The corridor behind the second door was intertwined, like a mess. It's just that although these roads are different, the end of each road is a dead end.

This kind of door should be the "door of death". Once inside, there is no exit to be found.

In the end, as Gao Zhen turned the entire circle of sword hilts, Lai Ruoxue finally walked through the corridors behind all the nine doors with his fingers. She found that only the corridor behind the seventh door had an exit.

They called the door where the blade was initially facing the "first door," and the "seventh door" was the one where the blade was aligned when the hilt was turned six times clockwise. The end of one of the forks in the corridor behind this door leads to a square area. This square area is very special, different from other places, although the sun is now tilted, resulting in fan-shaped light and shadow is very blurred, but it can still be distinguished, the center of this square area corresponds to the eye of a fairy beast carved on the ground, and that eye is engraved with a small word "door".

"Door?" Gao Zhen reached out and touched the fairy beast's eyes. The pupil of the eye is engraved with this small letter, and if you don't look closely, you will never find it.

"Does the door mean an exit?" Lai Ruoxue said stunned.

"Anyway, let's follow the route and take a look." Gao Zhen handed the fire fold in his hand to Yi Shuihan on the side and asked him to help take care of it. Then he took out a piece of leather from Lai Ruoxue's treasure bag, and popped out a metal wire made of metallic true qi condensed from his fingertips, recording the trend chart of the seventh door.

As he finished recording, the sun moved away, the light coming down from the dome was disoriented, and the fan-shaped light and shadow on the ground disappeared completely.

"Are you really going?" Lai Ruoxue glanced at the endless darkness behind the arch, and didn't know why she was a little scared. Ever since she was hit by the Heavenly Sound Divine Ape's Heaven-Breaking Divine Sound, she seemed to be a different person, helpless, pitiful, like a "girl".

"It's okay, you'll be between me and Brother Yi later, and we'll protect you. This should be our only way out, the bronze plates here are too hard to break. Gao Pillow said, knocking on the bronze wall next to it, there was a dull noise on the wall, it was obvious that it was very thick, and the back was not hollow.

"Brother Yi, you also take a fire fold. But I don't have a lot of this stuff with me, so I can save a little bit. "This thing is much more convenient than directly using immortal lighting, you can't crawl in the corridor while mobilizing the true qi in the dantian to create flames.

The three of them tidied up their belongings, took out the Void Condensation Sword from the bronze round platform, inserted it back into the scabbard on their backs, and led the way into the bronze corridor behind the seventh arch.

Like the arches, the corridor is only two feet long and wide, and it is very narrow. Gao Zhen could only bite the fire fold in his mouth, and crawled in it with his hands and feet. The bronze corridor was cold and cold, but there was not a trace of wind blowing, and the three of them were very quiet and did not speak. In the whole corridor, except for the friction of clothes, there was no sound.

At first, the road was straight and slowly inclined at about 30 degrees, and the three of them climbed for nearly an hour before they reached the first fork indicated on the map.

There are two forks in the road, one to keep going forward and the other to turn left. Gao Ji paused, and waited for the two behind him to follow before making a gesture and crawling towards the fork in the road on the left. The bronze corridor is too narrow, and people can't turn around when crawling inside, so they can only climb forward vigorously, and only when they reach a more spacious place with a fork in the road can they gesture backwards.

After climbing for a while, the road began to become complicated, and several bends and forks appeared in succession, and the three of them crawled in the labyrinthine underground tunnel, and their speed decreased significantly.

After climbing a certain distance, Takatsu would stop, lay the piece of leather on which the map was drawn in front of him, and examine it with a fire fold. The corridor is not only narrow, but also very dark, and it is easy to see the wrong direction if you are not careful. They don't have a compass or compass, and they rely on memory to find their way in the underworld. The high pillow kept turning the leather on the ground to keep track of the direction he was facing.

They crawled in the corridor for about four or five hours, and gradually became a little tired. As long as people keep repeating the same action, it is easy to get tired, and immortal cultivators are no exception. However, Gao Zhen saw that the distance marked on the leather had been more than half of the way, so he did not stop to rest, and kept moving forward.

Suddenly, Gao Zhen felt someone behind him pull him. He immediately stopped, took the fire fold in his mouth in his hand, and asked, "What's wrong?" ”

The man behind him didn't answer him, but reached out and grabbed his calf tightly, trembling incessantly.

A layer of cold sweat immediately oozed from Gao Zhen's forehead, what happened? Why didn't Lai Ruoxue speak? What's wrong with her? Could it be that an internal injury has flare-up?

He couldn't turn around in the narrow corridor, so he had to stretch out his other hand and touch his back.

At this time, a terrifying thought flashed in Gao Zhen's heart: Could it be that what he touched was not Lai Ruoxue, but a monster or a devil?

He felt a chill run down his spine.

Gritting his teeth, he jerked the hand that grabbed his calf. It was a small hand, so cold that it barely had any temperature. This hand continued to tremble in Gao Zhen's hand, and the fear of fear was transmitted to Gao Zhen's heart through the arm.

Gao Zhen breathed a sigh of relief, he could tell that this was Lai Ruoxue's hand.

So, he held the trembling hand tightly, slowed his breathing, and asked softly again, "Ruoxue, what's wrong?" ”

"Easy water cold...... He's gone! The girl behind her shouted out the words that were held in her heart in a tone of extreme horror.