The door was not forced, but it opened by itself, if this was before, Wu Yu would definitely be surprised. But since I studied with Yu Chen in the shroud shop for a while, I can be regarded as understanding something.

The so-called self-opening door is not caused by some magical power, according to Yu Chen's theory, this should be caused by changing the flow of yin and yang in the small environment.

The flow of yin and yang qi, the so-called yin and yang qi, to put it bluntly, is also a gas-like thing, and the door has the meaning of blocking in ancient feng shui, that is to say, in feng shui theory, the door can block yin and yang.

Although according to Yu Chen, the effect of the barrier is only symbolic, just like in the corridor of the police station, although there are multiple doors to prevent the Evidence Department from seeing Sun Xiaoxi, it still can't prevent Sun Xiaoxi from being lost in the corridor by a ghost hitting the wall.

Therefore, opening the door without contact is not a strange phenomenon, but the yang energy of the human body itself is much heavier than the yin energy, according to the ratio calculated by Yu Chen, it is about the ratio of nine to one. At this moment, the corridor is filled with a gloomy atmosphere, and the temperature is relatively low, compared to the yin qi.

Once the human body touches the door of this utility room, it should be a sudden increase in yang energy, which makes the yin and yang inside and outside the door change, just like a pressure cooker can withstand the pull of more than a dozen people, and the principle of resisting atmospheric pressure makes the door open by itself.

Wu Yu ignored that he had touched the doorknob just now, if it was really as he guessed, then the door should have opened when he touched the doorknob, and he would not open it when he touched the doorknob itself.

However, Wu Yu didn't have time to think about these problems, and when he saw the blood, Wu Yu instinctively thought of bad things, so as soon as the door opened at this moment, Wu Yu couldn't wait to rush in.

I thought that with a momentum, even if I really saw a crying girl after I went in, I wouldn't be scared for a while.

However, after entering the door, there is nothing out of place except for messy clutter.

There was clutter everywhere in front of me, some mops that had been sitting for an unknown period of time and the components of the old bed were placed in a mess, and directly opposite the door was a window that had not been wiped for an unknown amount of time, and only a faint light could be seen at the moment.

There was dust everywhere, and the wind driven by Wu Yu rushing in so suddenly, the dust was blown up a lot, and for a while Wu Yu felt that this small utility room was a little choking.

Wu Yu wanted to reach out and cover his mouth and nose, but because the blood on his hands had not dried yet, he was afraid that he would make his face bleed if he covered it like this.

I don't know if it's because of the women's clothes on her body, or if Wu Yu is too deep in the play, Wu Yu at this moment actually showed a girl's unique frown, obviously a little disgusted by this dust.

I looked carefully at the window from the door to the opposite side, and although the things in the utility room were messy, there was still a path between the door and the window.

As a family member of a criminal policeman, Wu Yu has learned a good habit, that is, every time he goes to a strange place, the first thing he does is to quickly record the environment here.

is not only the good habit that Sun Xiaoxi brought to Wu Yu, but also what Wu Yu, a pseudo-military fan, learned from foreign special forces novels, recording his own environment, and when the environment changes, he has the opportunity to find the problem at the first time.

After taking a closer look at the surroundings and the ground, Wu Yu found that there should have been no one here for a long time, and the thick dust on the ground left a clear footprint when his slippers touched.

Because Lin Feng prepared a pair of shoes for him with special feminine words, Wu Yu was not very adaptable, so when he went out, he wore the slippers that Lin Feng left in the house, but at this moment Lin Feng's girl-style slippers were very small, and Wu Yu's big feet were a little reluctant to put them on.

Leaving footprints, Wu Yu immediately realized that no one had been here, so the blood on the doorknob should have been deliberately left there.

From the moment he entered the door, Wu Yu ignored the sound of the girl crying, and when he thought about it, Wu Yu suddenly frowned.

Because from the moment he entered the door to the present, Wu Yu couldn't hear the strange girl's crying voice at all, and the feeling that had been echoing in his ears suddenly disappeared, and Wu Yu was still a little uncomfortable for a while.

Thinking of this, Wu Yu briefly glanced at the utility room, and saw that there was no special change here, Wu Yu was about to turn around and leave, obviously there was no value at all here, maybe the sound did not come from here.

Just as he was about to turn around, Wu Yu suddenly felt a cold air behind him suddenly attack, this feeling was really indescribable for a while, but it was very similar to the feeling of a martial arts master in martial arts novels, when someone sneaked up behind him.

Although Wu Yu's skills are very poor, he can't stand his daughter-in-law's perennial training, and after returning from Zhao's tomb, Wu Yu's own can be trained.

At that time, when he came back from Zhao's tomb, Wu Yu realized that the so-called ghost catching skills were very dangerous, and if he didn't have some dexterous skills, he was afraid that he would really not be able to do it, so he also had intensive training, and even found Sun Xiaoxi's sanda teacher.

At this moment, he instinctively sensed danger, and Wu Yu's first reaction was to dodge. Because he couldn't determine what was attacking him, and he didn't care about the dust on the ground, Wu Yu rolled forward and immediately got out of the position he was in before.

The whole action was done in one go, and it was obviously the result of Wu Yu's many practices.

Leaving his previous position, Wu Yu immediately stood up and looked back, patting the dust on his body at the same time, he was still quite satisfied with his skills, at least he couldn't dodge the attack just now.

Looking back at the direction of the door, Wu Yu was dumbfounded.

Nothing appeared, not even a single figure, and the door closed silently without knowing when.

Walking quickly to the door, Wu Yu hurriedly reached out to open the door, this is not a joke, I don't know when the door will be closed, it is understandable, if this door can't be opened, then I won't be trapped here.

Sure enough, as he imagined, although Wu Yu tried his best to eat, the door had no intention of being opened.

Wu Yuzheng was anxious and wondered, could it be that he overreacted just now, it was not attacking himself at all, but the door closed automatically? Suddenly, the sound of the girl's crying began to echo in his ears again, as if the sound came from his side.

Wu Yu was surprised, and immediately looked around, but saw that the utility room was still the same as before, without a trace of change at all, except for the traces of his own movement on the ground and the dust remained, there could be no other person in the whole room, let alone a girl.

The girl's crying voice gradually became smaller, which made Wu Yu couldn't help frowning, the voice suddenly disappeared, and then suddenly appeared when he was most nervous, and at this moment the voice gradually became smaller, making Wu Yu feel as if someone was joking with him.

Although the voice has become smaller, Wu Yu's sense of direction is better, and although the voice has become smaller at the moment, the sound is indeed obviously coming from the direction of the window.

Without thinking about how to leave, Wu Yu cautiously walked in the direction of the window, because he was still a little nervous, Wu Yu casually picked up a worn-out iron rod from the old bed on the side.

Cautiously came to the window, Wu Yu immediately felt through the gap in the window, a gloomy atmosphere was coming through the window, although because the window had not been wiped for a long time, it was full of dust and there was no way to see the situation outside the window, but that kind of cold air Wu Yu was very clear, that is, the yin qi was right.

When he came to the window, Wu Yu immediately looked in the direction where the sound came from, and the sound seemed to come from outside the window, and it was not far from the right side of the window

There was a gap about two fingers wide on the side of the window, which was deliberately left by the cleaning aunt who was in charge of the utility room in the first place, so that the room could have air circulation and not produce unpleasant smells. Maybe the cleaning aunt didn't expect that after leaving the utility room, no one would come here for a long time, so the room was covered with dust.

At this moment, the sound happened to pass through this gap, allowing Wu Yu to listen to it really. However, it is likely that the window has remained its current state for a long time, so there may be a lot of dust or rust at the joint, and the window seems to be able to open only at this moment.

Wu Yu had already heard the sound on the right side of the window, so Wu Yu really wanted to see what was going on outside, and whether there was really a girl crying outside.

After trying a few times, he found that the window really couldn't be ajar, so Wu Yu had to reluctantly lean his mobile phone out of the window, and use the reflection of the mobile phone screen to identify whether there was really someone outside.

However, as soon as the phone was stretched out, Wu Yu found that he was a bit of an idiot, it was midnight outside, and there was no light at all, although there was a playground downstairs, and although there were a few street lights in the distance, it basically had no effect on this side because of the distance.

Through the screen of the mobile phone, Wu Yu could barely see what was outside, but he could still roughly see the outline on the left.

Wiping the cold sweat from his forehead, Wu Yu couldn't help but want to take back his mobile phone. Just a glance, Wu Yu had already seen the situation on the left side.

It was a girl's graceful figure, although she couldn't see her appearance clearly, but Wu Yu could still see that the girl was sitting on the air conditioner, and her body was trembling slightly at the moment, obviously crying.

However, Wu Yu saw the girl's eyes, which turned out to be a pair of eyes flashing with light blue light, just when Wu Yu was about to retract the finger holding the mobile phone from the window, a huge force came from his finger, like a huge iron tong pinching his finger, Wu Yu was gradually pulled by this force.

Through the narrow window crack, Wu Yu was surprised to see that a delicate little hand was tightly grasping his finger holding the mobile phone at the moment.