This girl is a streetwalker in the demon world

In the dark mausoleum full of ghosts, there was a faint green light that kept flickering in the deep corridor, sometimes to the left, sometimes to the right, and it looked like the ghost fire that was faintly visible among the tombs.

The will-o'-the-wisp fire turned in panic under the fierce and terrifying demons and monsters on both sides. In the dim light, two women's faces suddenly appeared, like female ghosts from hell.

"Help... I want to go home!" Shao Shuang'er's face, which was already pale due to injury, was even more bloodless. She tightly held the arm of her companion next to her, and tried hard to absorb the other's body temperature to confirm that she was still alive.

She was originally the daughter of an official. The most extraordinary thing she had ever done in her life was to leave home alone and travel thousands of miles to become a disciple of the Canglan Sword Sect in order to seek good health. When she became an adult, although she was dissatisfied with the marriage arranged by her parents since she was a child, she did not dare to resist openly. She could only pin her hopes on the bleak Immortal Gate Conference, hoping to get a good ranking so that she could find life-saving elixir for the old emperor, so that he would be pleased and forgive her marriage.

Shao Shuang'er's idea was actually very naive. How could the marriage of important officials in the court be easily resolved like this? It was just that she didn't want to be slaughtered and wanted to struggle and breathe for a while under the emperor's grace.

But now it seems that not only is the chance of escaping her fate by relying on the Immortal Sect Conference gone, she and Yaxun may not be able to walk out of the Immortal Emperor's Mausoleum alive. Thinking of her family far away in the imperial capital and her friends in the sect whose lives and deaths are uncertain, she couldn't help wanting to cry several times. However, with Yaxun beside her, Shao Shuang'er couldn't ignore her. She could only grit her teeth and persevere, swallowing her tears, and cheering herself up to keep moving forward in this gloomy mausoleum.

The two of them didn't know how long they walked. The deep corridor seemed to have no end, and only the bloody murals on both sides accompanied their footsteps.

Yaxun lowered her head in silence. As they went deeper, she finally spoke: "We have been going in circles."

"What?" Shao Shuang'er stopped when she heard that.

"Shao Shuang'er, look at your feet." Yaxun slightly broke free from Shao Shuang'er's grip, squatted down and pointed at the marks on the bluestone slab, and said solemnly, "You should remember the current footprints carefully." She took two steps back and pointed at the marks from the way she came, saying, "Our footsteps have shifted to the right."

Shao Shuang'er tilted her head to compare the difference between the two. Not long after, she stood up and said in surprise: "Yes! It really shifted to the right, but we were always moving forward!"

Yaxun's cat eyes can see even in the dark. Her eyesight is much better than Shao Shuang'er's, but even she just realized that there seems to be something wrong with their path. Yaxun whispered, "I was wondering how it is possible for such a famous Immortal Emperor's Tomb to let us pass through easily? Maybe this is the first checkpoint, and they are going to trap us to death here!"

"what do you mean……"

"Don't you realize we've come a long way?" Yaxun said, "But we keep going around in circles here and can't find the exit at all."

Shao Shuang'er shuddered. In the green light, she suddenly felt a chill on her back. The ghost stories she had heard from her uncle when she was a child came flooding back to her mind. She was so scared that she covered her mouth involuntarily and whispered as if she was afraid someone would hear her: "Are we going to be trapped here to death?"

"It's possible," Yaxun nodded seriously, "but when I think about dying with a fool like you, I suddenly don't want to die anymore."

Seeing Shao Shuang'er's angry expression, Yaxun burst out laughing. She mocked, "Hey, where is the Iron-blooded female warrior who was so good at fighting before? I still need the female warrior to take me out."

Shao Shuang'er's face turned red and white. She was so angry at Yaxun that the blood rushed to her head. The two quarreled for a while. Shao Shuang'er felt much better and was not as scared as before. She couldn't help but look at Yaxun strangely.

"What?" Yaxun was a little confused.

"It's okay." Shao Shuang'er touched her cheek embarrassedly. She understood that Yaxun just wanted her to relax and not be so nervous. Moreover, from the very beginning, Yaxun was brought down into the pit by her. She must be responsible for her and must cheer up to crack the mechanism of the Immortal Emperor's Tomb so that the two of them can escape safely. After thinking it through, Shao Shuang'er squatted down, stretched out her hand and carefully stroked the ground, as if she was feeling something.

Yaxun was not idle either. She took out a fluorescent white branch that was emitting bright light from her bag, stood beside Shao Shuang'er and observed the mural, trying to find useful clues on the mural.

"Tsk, you clearly have something to light yourself, why do you have to use my night-light pearl..." Shao Shuang'er complained in her heart, and carefully felt the touch of her hands, "Well, this ground doesn't seem to be flat, there is a very small slope... It's towards the left..."

She raised the night pearl and looked to the left of where she was. There was no difference between the corridor there and the corridor on the right. There was no trace of moss in the corners because the tomb was dry. But it made sense. The Immortal Emperor's Tomb had been sealed for thousands of years and had no connection with the outside world, so how could moss grow there? Wait!

Shao Shuang'er suddenly thought of something, stood up abruptly and said, "There is wind! There is wind here! That proves there is a way out!"

She stretched out her palm and silently felt the slight air flow in front of her. "It's very small, almost non-existent. This means... huh? How come this wind is getting stronger and stronger?"

"Shao Shuang'er! Run!" Yaxun grabbed Shao Shuang'er, who was still in a daze, and ran quickly in the direction they came from!

After Shao Shuang'er realized what was happening, she followed Yaxun and ran in the corridor. As she ran, she asked, "What happened? Why are you running?"

Yaxun looked back with lingering fear, but she did not stop running. She said in horror: "I was just studying the painting, and then I saw an ugly monster in the painting. It squatted in front of a grave, grinning at me. I was almost scared to death! Its face looked like Uncle Bei, and its tongue was several feet long, hanging directly on the ground. Oh, I have been in the mountains for so long, and I have never seen such an ugly thing! Then, here comes the key point! When the light shines on the monster in the painting, it comes to life!"

"Ah?" Shao Shuang'er almost thought she was listening to some ghost stories that were meant to scare children.

Yaxun continued, "When its eyes were hit by the light, they glowed red! It bared its teeth at me for a while, then went to the door. I saw half of its head sticking out of the door!"

Shao Shuang'er couldn't help but interrupt her and questioned, "Okay, I assume that what you said before is correct, but what is this 'door'?"

"A painting! It's the kind of painting you Zhongzhou people love the most. It's the kind of painting where the door of a high-ranking official's house opens towards us, but a monster also crawls out from there..."

Shao Shuang'er understood what was going on. She said loudly, "Then we shouldn't have run away just now. The exit is in that door painted on the wall!"

After that, she stopped, held Huanhua in her hand, and said to Yaxun: "Our ancestors once said, 'When two meet on a narrow road, the brave will win.' Especially at times like this, we must not run! If we run, I'm afraid it will be difficult to find this door again!"

Yaxun said anxiously, "Isn't this just a circle? Why don't we just run a circle and come back?"

This tunnel mechanism did not stump the two girls at all. Yaxun and Shao Shuang'er both figured out the subtlety of the tunnel in their own ways.

It turns out that this corridor uses people's habitual thinking to trap people in the corridor.

If you look down from a bird's-eye view, this is a huge circular passage. On the surface, it looks like a straight corridor, but in fact it was built with a very small angle offset to the left. When the "circle" is large enough, the offset angle will be directly ignored by people in it, which is exactly the same as a straight line. That's why they walked for so long and couldn't find the way out, because the "gate" to get out is actually guarded by a tomb guardian beast on the mural. Fortunately, Yaxun was lucky and was able to find the gate in such a long corridor.

Because Yaxun knew that this was just a circular design, so they just needed to go around it, right? Why take such a risk and face the monster directly?

But Shao Shuang'er's words awakened Yaxun: "I have studied arithmetic for several years from the master, and one of the subjects is called 'Circle Cutting Method', which is exactly what is happening now. But Yaxun, you only know one thing but not the other. Why don't you think about it? If there is such a tiny 'cutting angle', how big should this circle be?"

After these words came out, Yaxun fell silent. Shao Shuang'er continued, "And think about it, if the Immortal Emperor can hide a tomb guardian beast on the mural, then can he hide more monsters? So, you should put away the branches. The light of my night pearl is relatively weak. As long as it is not directly facing the mural, it should not wake up the monster in the painting."

Yaxun sighed and said, "I shouldn't have said you were the fool, I am the fool." After that, she put away the glowing branches, and the two of them were once again immersed in the strange green light.