Qi Lei is a few years older than Wu Er, he is responsible for transporting medicinal materials to the village, and the car is more than three hours away from the train station.

"Well, I'm going to work in a few months, so I'm going to go out and open my eyes and see the world now. ”

"Where are you going?"

"Sleepover. Wu Er glanced at the time and replied softly, never thinking that Qi Lei would be interested when he heard the name Sucheng: "Yo! That's an ancient city! Didn't the news on TV report that tomb robbery was rampant there a few years ago?" I heard that the state sent several groups of people to investigate there in vain, saying that the road is too tortuous, strange things along the way, the ancient city is in the depths of Ciyun Mountain, the car can not go at all, although after several years of construction, the car can barely reach the foot of the ancient city mountain, but the local tourism has not thrived, but it has made Sucheng a mysterious place in the eyes of many people, and now modern people do not worry about food and clothing, but they all love to visit these mysterious ancient cities, it seems that Xiao Er you prefer adventure, haha. ”

Qi Lei usually likes to listen to the radio while driving, and occasionally heard some reports about Sucheng, and the host's radio was mysterious, which made him particularly impressed by this name.

"Yes, then it seems that the place I chose this time is not bad! I also heard a friend introduce this place at school, his ancestors lived not far from Sucheng, although his generation has long moved away, but his ancestors have passed on a huge secret buried in the mountains around Sucheng has not been discovered by the world, haha, anyway, it is said that it is superb, it is estimated that it is mostly a gimmick used to attract tourists, but it still whets people's appetites, so I plan to play. Although Wu Er said it easily, but listening to Qi Lei say it all the way, he couldn't help but beat a drum in his heart, after all, the city he chose this time was indeed far away, and his brain was also hot at the beginning, and he felt that the graduation trip could not be the same as others, so he mentioned this sentence to Song Pan, who knew that the fat man was also a rectum, and he agreed to come down with a mouthful, and now think about it, this trip, even if he is kneeling, he has to finish it hard.

At about five o'clock in the afternoon, the car arrived at Huaishi Railway Station, Wu Er got off the train with his luggage and said goodbye to Qi Lei, looking at the crowded crowd at the train station, the noisy sound almost flooded the entire square, Wu Er frowned, but heard a rumbling stomach, and the sight also called the various snack bars on the right side of the train station to attract the past, but as soon as the footsteps moved, suddenly a figure squeezed over, and before he could see his appearance, a card had been handed to Wu Er's eyes, "Young man, do you live in a hotel? ”

"It's really fake, it's quite professional. Wu Er looked at the short and swarthy man in front of him suspiciously, and then took the card in his hand, the card was quite well-made, much better than those small cards in the style of copycat killing Matt.

The man smiled: "Professional! Of course professional! Why is the competition not fierce now? How can you gain a foothold among so many competitors without providing humanized services, don't you say?"

Wu Er looked at the card carefully, the name of the hotel is 'This Inn', and the catering and accommodation are 168 a night.

"Your hotel doesn't have any additional costs other than what it says on the card, do you?"

"No, no, you can absolutely rest assured of this! Don't we also advocate honesty in the core values of the Celestial Empire, what kind of business do people have to do without trust?" The man's mouth was like a river, but he didn't know that Wu Er had already recorded his words, and in the past few years of studying forensic medicine, the basic quality of the profession is to maintain a high degree of caution and grasp the evidence at any time.

"Okay, where is your hotel?"

The man pointed across the road, pushed aside the crowd and led the way in front: "Cross the road and turn an alley to arrive, don't look at the hotel on the side of the road, but it's rare to rest at night, and they are cheap, inevitably dirty and messy, we are different, not only sleep comfortably, but also provide breakfast and dinner for free." ”

Wu Er followed him, and he didn't bother to talk to himself, and secretly wondered in his heart, the wool came out of the sheep, how could there be a free lunch in the world? Walked for more than ten minutes to the front of the hotel, Wu Er took a look, indeed as he said, the environment of this hotel is not bad, as if it has just opened, the furniture and electrical appliances are also very new, the man led Wu Er to the door and said hello and went back to the train station to solicit customers, Wu Er opened the glass door, and stood in front of the front desk was a young and beautiful girl, and immediately smiled when he saw a guest come in: "Hello, welcome to stay in this inn!"

Wu Er took out his ID card and asked for a standard room, room number 8704, on the seventh floor, after getting on the elevator, he felt that the world was quiet all of a sudden, Wu Er took out his mobile phone and sent a text message to the fat man that he had reached the train station, and then looked at the posters posted around the elevator with boredom. Tick 'sound stopped on the fourth floor, Wu Er moved a few steps to the side, but after the elevator door slowly opened, he found that there was no one standing outside, the corridor was pitch black, Wu Er leaned out, glanced left and right, and found that the corridor was unusually quiet, only the indicator light of the safety exit supported the faint green light in the dim corridor, Wu Er withdrew his body and pressed the door button, but the originally extremely ordinary behavior touched his sensitive nerves for no reason, something is wrong! As soon as the thought fell, he hurriedly pressed the sixth floor before the elevator reached the seventh floor.

"Tick. The elevator sounded again, Wu Er's heart tightened, he felt his breathing become short, his eyes were staring at the crack in the door, although the elevator door still paused for two seconds before slowly opening, but Wu Er suddenly felt that these two seconds were extraordinarily long, until, a line of dim light lit up in the field of vision, and the tense cells in his body were relaxed, relieved. There is a cleaner outside the door who is carrying a bucket and a mop in, wearing a dustproof hat and a mask, he can't see his face clearly, he glanced at Wu Er when he entered the elevator door, and hurriedly lowered his head, and when he arrived on the seventh floor, Wu Er's room was on the left hand side of the passage, although it was against the window of the corridor, but it was separated from the train station by a street and alley, and the sound was indeed a lot quieter.

Putting down things in the room, Wu Er felt tired, and looked at the time when it was just time for dinner, and when he thought of this, his stomach grunted a few times, thinking about it, this so-called free dinner is still the money he spended, how can he come back if he doesn't eat? Thinking about it, Wu Er got up and went out, and met the cleaner in the corridor again, he didn't pay attention to it before, but at this moment, he took a look intentionally or unintentionally, and found that the bucket was not filled with water, and the mop was also white and clean, and then looked at the posture of the cleaner walking, I don't know if it was an illusion, but I actually felt very dignified.

Wu Er shook his head and laughed when he came up with this idea, and when he entered the elevator to the restaurant on the second floor, there were already many people sitting at the table eating, bread, milk, fruit, cooked food, Cold salad is full of a table a few meters long, the type of buffet, Wu Er doesn't care if he can eat it or not, try to put vegetables in his own plate, always feel that this measure can return to the capital, after sandwiching the dishes Wu Er found a table by the corner and sat down, and the fat man used his mobile phone to brag and talk nonsense, a meal down for almost an hour, sit up for a long time, Wu Er found that he had eaten a little bit unconsciously, and the adjacent table did not know when there was one more person, and he chose to sit in the corner like him, the light over there was not good, I couldn't see the person's appearance clearly, I didn't need to care, Wu Er glanced at it and walked byBut he noticed something, he turned his head slowly, and found that the man was eating on a plate with almost no vegetables, only a piece that resembled an animal organ.

Wu Er's brows tightened, his stomach stirred and he felt nauseous, who knew that the guest who was eating also raised his head to look at him, his eyes were cold, and Wu Er quickly turned around and left quickly.

Returned to the room and turned on the TV to change the channel frequently and watched it casually, Wu Er passed the boring time, then got up and took off his coat to prepare for a bath, the amulet happened to be taken out, he picked it up, and couldn't help but recall Yue Shiyin he met some time ago, he didn't care much about it at the time, but now that he thinks about it, he thinks that the sentence she asked at the time, "This trick, is it really yours?" is really intriguing, and then he feels bored, he put the amulet on the table and went into the bathroom.

When it was close to 0:00 in the morning, Wu Er turned off the light and just lay down, when he heard a knock on the door.

"What the hell, there are still people at the hotel at this point, is it ......?" Wu Er's face tightened, and he quickly got up and hurriedly got dressed, and it was almost imaginable that outside the door was a scantily clad woman ready to ask if she needed special services. After a little weighing, Wu Er turned on the recording function of the mobile phone and put it in his pocket, if there was anything wrong, there was evidence, the knock on the door was unhurried, Wu Er took a deep breath, and said in a deep voice: "Who?"

Unexpectedly, there was silence outside the door, no one answered, but only paused for a few seconds, and the knock sounded again, Wu Er was listening to the movement next to the door, and the sudden knock startled him, and his face was also gloomy, and he opened the door a thin slit to look out, squeezing into the eyes There was only a dim corridor, how could there be half a figure outside the door?!

This time he was very frightened, Wu Er subconsciously closed the door quickly, took the clothes pole behind the door and held it in his hand, and then ran to the bedside table to dial the phone at the front desk.

"Hello?"

"This is room 8704, there was a knock on the door just now!

The front desk clerk was a little dazed by the sudden explosion in the earpiece and his rapid tone, and replied to him: "...... Did you ask who was outside the door?"

Wu Er still didn't calm down, and turned his head to look at the door from time to time: "Asked! No one answered, I opened the door and took a look, but there was no one outside the door!"

"This ...... Okay, I'll call the security guards to come up and take a look, you wait. The front desk waiter tried his best to restrain his inner irritability, and remained polite to agree, after all, it was not the first time that the hotel had encountered such a nervous guest, and it was nothing more than looking for someone to go up and go through the service scene.

Wu Er hung up the phone and sat on the edge of the bed, his back was soaked with cold sweat, and the knock on the door did not ring again, but Wu Er gradually calmed down, knowing that even if the security guard came up at the moment, he would definitely be the same as himself, and he would not find anyone outside the door, but if there was surveillance in the corridor to capture anything, it may be the most direct evidence, thinking of this, Wu Er got up and got dressed, and by the way, he took the clothes pole behind the door in his hand for personal use, and soon, the voice of the security guard came from outside the door: "Hello?"

Wu Er opened the door, as he expected, in the early hours of the morning, no one would appear in the corridor at all, Wu Er looked at the security guard and didn't bother to repeat the situation just now, he couldn't let others think that he had encountered a ghost knocking on the door in the middle of the night, so Wu Er said directly: "Can the monitoring in your corridor be used?"

The security guard looked close to forty years old, with dark skin and a simple face, half a head shorter than Wu Er, and Wu Er even felt that if he really encountered any emergency, this security guard really had the ability to deal with it.

"Uh...... Absolutely. ”

"Do I need to go to the front desk to check the surveillance?"

"Yes......"

"Okay, thank you. Wu Er closed the door directly, put the clothes pole aside, and went straight down the elevator, a series of questions and actions made the security guard confused.

Arrived at the front desk, explained the reason, the young waitress had to call up the video surveillance twenty minutes ago, Wu Er stared at the screen tightly, but suddenly found that he was negligent A big problem, although the surveillance recorded the scene at the time, but because the sound could not be recorded, so Wu Er opened the door to reveal a crack in the door and immediately closed the details After losing the strange knocking sound, in the eyes of outsiders, it became a very ordinary picture. Wu Er's heart was full of grunts, and a huge fear flooded his heart, while the waitress and security guards on the side just watched coldly, all with an unreasonable expression.

Wu Er's forehead began to break out in a cold sweat, the monitoring was placed here, no one had appeared at the door of his room at all, but Wu Er was sure that he had heard correctly, such a clear knock on the door even sounded in his ears at one point, it could never be an auditory hallucination, but at the moment, if he stubbornly argued, I am afraid that most of them will be regarded as a neurosis, simply, Wu Er stopped making a sound, pulled back the progress bar of the monitoring, and did not dare to blink again, in the video, finally a few frames of the picture caught his attention, he repeatedly retreated and played, and finally pressed the pause at the screen where he opened the door, this time not only cold sweat, even Wu Er's hand holding the mouse did not tremble, at the moment he opened the doorThere is a line of black shadow coming down from the ceiling and rushing into the room from the upper left corner of the door at a very fast speed! It's just that because the lights in the corridor are hitting the wall and the ground, the ceiling has become the only place with thick shadows in the surveillance, so if you don't look closely, you can't notice this fleeting scene at all!

But the question also comes! How to explain this dark shadow? A person who has always been instilled in school with the supremacy of natural science should believe that he has encountered a supernatural event? And the two most important pillars of natural science are observation and logical reasoning, Wu Er never believed in the theory of ghosts and gods, and even if he wanted to explain it at the moment, there was only one theory, the problem of surveillance and filming.