Before approaching the teaching building, Ningyuan's feeling was not very clear. Although he vaguely felt that something was wrong, he did not feel any evil spirit, only a strange and eerie atmosphere. However, within fifty meters of the teaching building, he began to feel a thickening of the evil spirit around him, and as he got closer to the building, the evil spirit grew denser.

  Although this yin energy is not as thick as the blood qilin he got from Jiang Shihao, it's absolutely frightening in this vast campus. No wonder there are rumors that the second-year teaching building is haunted. With such a strong gathering of yin energy, it would be strange if it weren't haunted.

  This morning when entering the school, Ningyuan also carefully observed all the way and found that although the campus layout had been damaged, there were threads of evil spirits entwining in the air, but it was not serious. However, he never thought that this place would have so many evil spirits.

  What is meant by evil spirits and good fortune, it's naturally impossible to distinguish clearly between the two. Both are intangible things that can't be seen or touched. Good fortune contains evil spirits, and evil spirits contain good fortune. This is very normal unless the proportion of both becomes severely unbalanced, which would lead to some kind of strange consequences.

  In simple terms, Feng Shui is to hide the auspicious energy in the house and drive out the evil energy from the door, so as to make the residence more beneficial for the owner. Apart from residences, other buildings also have similar functions.

  In Feng Shui, it is said that "hiding the wind and getting water to gather energy", the gathered energy is the auspicious energy, this kind of energy is a kind of energy that promotes the birth of all things in the world, a kind of energy that catalyzes other substances, a kind of energy that promotes the birth of life.

  Although this energy cannot be explained by science so far, it is undeniable that it truly exists. Not only are there similar sayings in China's Feng Shui, but also some genius scientists from other countries have made discoveries, they just have different names for it.

  This kind of gas will gather to varying degrees according to the different landforms and regions, where the momentum is strong, naturally the auspicious air is thick, and where the terrain is yin and evil, naturally the killing air gathers.

  However, Ningyuan did not find anything unusual about the teaching building in front of him. Although this area was not laid out very reasonably, the teaching building itself had a majestic and intimidating presence that could deter evil spirits, even if the surrounding killing energy was gathering, it wouldn't make the killing energy so thick.

  Can't think it through, Ningyuan didn't bother to ponder and continued walking towards the teaching building. When he arrived at the foot of the stairs under the teaching building, he almost bumped into someone who was lost in thought.

  Only when Ning Yuan looked clearly at the person coming down from upstairs did he realize that it was actually the undercover policewoman.

  The policewoman looked at Ningyuan with some surprise, slightly stunned, and asked in confusion: "Dr. Ning, isn't it? What brings you here so late?"

  "Just got off work, idle and nothing to do, wandering around." Ning Yuan smiled faintly and asked: "Sister, why are you also here? Are you also wandering around?"

  The policewoman smiled and looked at Ning Yuan: "I didn't expect your mouth to be so sweet, calling girls older than you 'sister'?"

  "There are also big moms bigger than me." Ning Yuan showed a mouthful of white teeth and smiled with meaning.

  "Hehe, smooth talker." The policewoman smiled and pointed upstairs: "I like to come here in my free time to listen to classes, read books, and enrich myself. I don't want to spend my whole life cleaning up after others."

  "Ah, you have ambition." Ning Yuan nodded with a smile and stepped forward: "I'll familiarize myself with the situation first, and later I'll find time to enrich myself too."

  Knowing the identity of this person in front of him, Ning Yu didn't want to have too much to do with her. The people from Liu Shan Men were not ones to be trifled with, they wouldn't even tolerate a grain of sand in their eyes. If they found out he was a swindler, they would keep an eye on him from now on and his life would become impossible.

  The policewoman saw Ningyuan preparing to go upstairs, hesitated for a moment and reminded him: "It's not very peaceful here at night, don't be too late, just take a walk around and come back."

  "Not quite peaceful?" Ningyuan was taken aback, and chuckled: "I know, thank you sister for reminding me." After that, he went upstairs.

  The policewoman didn't suspect Ningyuan either, she had also roughly understood Ningyuan during the day and knew that he was new here. Watching Ningyuan's back disappear, she also walked towards the teaching building in the distance.

  Just two steps away, a shrill cry suddenly came from upstairs. The policewoman hastily turned around and quickly ran up to the floor. At the same time, Ningyuan, who had just arrived at the second floor, also hastened his pace and rushed in the direction of the cry.

  The cry came from the fourth floor, Ningyuan rushed to the fourth floor and looked along the corridor. He saw many people standing at the end of the corridor, so he hurried over. A girl in her early twenties was sitting on the ground with a book in her arms, her face pale, her forehead covered in sweat, and the back of her shirt soaked through. Two girls were squatting beside her to comfort her, while several male students stood by.

  Ning Yuan approached the crowd and soon after, a female police officer rushed over, squeezing into the crowd and anxiously asked: "What's going on? What happened?"

  It's clear that the female police officer has been here more than once or twice, a girl in the crowd recognizes her and hurries to say: "Officer Chen, Xiaohong said she saw a ghost, a white-clothed female ghost."

  The policewoman hastily squeezed in, squatted down, and patted the frightened girl's back while comforting her: "Little Red, don't be afraid. There are no ghosts in this world. Someone must be pretending to be a ghost to scare people. Don't be afraid, tell sister what happened."

  The students who called out to Little Red were also slowly coming back to their senses, seeing a large crowd gathered around them, and their courage increased. They composed themselves, hiding their terrified expressions, and pointed down the corridor: "I was just about to go to the library to find a book to read, I had just reached the door when I saw a white-clad female ghost flash by, with no feet below her, her hair disheveled, and a long tongue, it was very frightening."

  "Alright, don't be afraid." The policewoman comforted her with a sentence and stood up to walk towards the end of the corridor. At the end of the corridor was a small library, the door of which was open, and the lights inside were still on.

  The female police officer led the way, followed closely by several brave male students, and Ningyuan also mixed in with the crowd to follow them. The group arrived at the entrance of the library, but found nothing unusual. Upon entering the library, it was quiet and still, without a single person in sight.

  The female police officer walking in front of her subconsciously furrowed her brow and whispered softly out of professional habit: "This is a blind spot, there's only one study room here, and it's on the fourth floor. How did the other party escape?"

  Ning Yu was standing behind, listening clearly, and couldn't help but shake his head. He figured it out that this female cop had probably come to the school undercover because of the ghost incident, with the purpose of finding the real culprit behind the scenes.

  But this time, it's not just someone pretending to be a ghost. As soon as they turned the corner, Ningyuan felt an even thicker aura of evil spirits here. The several male classmates who were with him even subconsciously tightened their clothes, but everyone was attracted by the female ghost incident and didn't notice that this place was colder than others.

  Of course, even if someone notices, I guess no one will care, after all, this place is a blind spot, and the sun doesn't usually shine here, so it's normal for it to be a bit chilly.

  The policewoman carefully checked the library, but didn't find any clues. She then went out to the corridor and observed everyone carefully before asking the two female classmates who were taking care of Xiaohong: "Did you notice anyone suspicious?"

  "No?" A female classmate shook her head: "We heard the shouting and rushed out of the classroom, only to see Xiaohong paralyzed on the ground, with no one else around."

  "How strange!" The policewoman frowned subconsciously and whispered an order, "Take Xiaohong to the infirmary first, I'll report this to the school leaders. This person who's pretending to be a ghost will definitely be caught, everyone doesn't need to be afraid."

  As she spoke, the policewoman suddenly saw Ning Yuan in the crowd and smiled: "How convenient, Dr. Ning is also here, let's have Dr. Ning take a look at Little Red first." While speaking, she nodded towards Ning Yuan.

  PS: Due to the lessons learned from "Dú Yī", this book doesn't want to get too entangled with officialdom, so it's written with some restraint, and the plot development isn't very fast either. Please forgive me, everyone, the plot is already unfolding gradually, and it will be even more wonderful later on. I hope you'll support Xiaoxiao, and please give your recommendation votes and collections.