Before coming, Zhong Jiabin got the information that this hospital admitted patients on the surface, but actually sold organs. After being infected by patients, all doctors and nurses disappeared overnight.

After coming, through the diary in the ward, everyone learned that the hospital claimed that some patients had been discharged, but in fact they had not, and they had probably turned into monsters.

Therefore, it is not difficult to guess that the hospital may be doing secret experiments, using patients as experimental subjects, and as a result, a lot of strange things were made, causing people to die and mutate.

But Cao Yu compared the cases and found that all the patients were related to an exploded chemical plant.

The plot suddenly became confusing.

"Is the hospital good or bad?" Jiang Baiyan muttered, "It's very strange."

Jian Jing picked up the other materials on the table and flipped through them, saying, "It seems that the hospital is studying and observing the infected people. Look, there are many test reports here."

Compared with the case that Cao Yu got before, the report here is more complete, with blood tests, X-rays, and drug records. If the hospital created the monster, there should be records of experimental cultivation.

"Let's go to another room." Jian Jing didn't want to stay with the mice and couldn't wait to leave.

The door of the underground laboratory was not locked, and they quickly entered the corridor.

The new map was unlocked again.

There were many locked iron doors on both sides of the long and gloomy corridor. Each door has a different lock. One is a rotating wheel like a safe, one is a long horizontal bar, and the other is a square table.

"Password, equation, Sudoku..." Jian Jing was confused, "Another math problem."

She thought about it and chose to spin the wheel first.

Like the old-fashioned safe, there are 10 numbers on the wheel, 0-9, and the password is entered by repeatedly spinning.

2-3-18-1.

It opened.

Jiang Baiyan: "???"

He was extremely puzzled: "Did I travel to an hour later?"

——After

the broadcast.

Barrage 1: My brother's doubts are my doubts

Barrage 2: Did Teacher Jian take the script?

Barrage 3: The script is stoned

Barrage 4: Did I fast forward? ?

Barrage 5: Where did this password come from? ?

...—— "It's the alphabetical sequence of bcra.

"

Jian Jing suggested.

Jiang Baiyan continued to be confused: "Does this word exist?"

She said: "Recall, what is the only password you have used today."

Jiang Baiyan tilted his head and thought about it, and suddenly realized: "The bloody words on the ward?"

When their group started the game, there was a bloody word "Qrivy" on the wall of the first ward they stayed in. Jian Jing said this was the Caesar code, shifted 13 bits, and the answer was "Devil", which means devil.

According to this rule, the decryption of bcra.

"Ah, open." He answered, "How did you guess it?"

"Since the police took photos, it proves that he must have been to the underground laboratory." Jian Jing explained, "If he was crazy, how could he write the encrypted words? This is more like a hint to prevent being discovered. I think it is more likely to be a password hint, so I tried it."

She said, shrugging: "Actually, the first thing I thought of was Noah's Ark, but I didn't know how to spell it, so I had to try a simple one."

——After the

broadcast.

Barrage 1: I can't spell... Really!

Barrage 2: For the first time, I feel that Teacher Jian is not that amazing Barrage

3: In fact, Noah's Ark is more in line with the setting, and the front is all Bibles

Barrage 4: It should have been adjusted for filming. Didn't you see that the information is all in Chinese?

Barrage 5: This is a Level 4 word, right?

...

——

"Bang, bang, bang", gunshots were heard from the other end of the corridor.

The sound of chaotic footsteps approached, it was Han Bo, Zheng Keyan and Coco. Everyone greeted each other, and they were obviously relieved: "Are you okay?"

"Nothing." Jiang Baiyan was curious, "Did you encounter monsters? Are they awake?"

Coco said: "They are asleep, but the opportunity is rare. If we don't kill them now, it will be troublesome when they wake up later."

Jian Jing smiled: "We came just in time, let's go in and take a look."

This room with a password lock is a special ward.

A monster sat on the bed, holding a doll in its arms. The arm that turned into a tentacle stroked the doll's head. The movement was gentle and careful, and a subtle warm light flashed on its neck.

There was a thing in a white coat lying on the ground, a mess.

In the pocket of the white coat, there was a square with an equal sign drawn on it.

"That should be the key to the next door." Jian Jing narrowed her eyes and spoke firmly.

Han Bo was sweating coldly: "Teacher Jian, isn't the key why it is not asleep?"

Yes, under the ghostly and seductive red light, the monster wearing a small skirt and holding a doll was not dormant. Although it was sitting quietly and didn't move, it was indeed awake.

"It's written here, special infected person." Jian Jing took down the medical record on the wall and flipped through it casually. "Red and green light are ineffective against it. Retain the characteristics before death and observe the subject closely."

Jiang Baiyan lowered his voice: "Is it Helen?"

"It should be correct." Jian Jing said, "Don't we have a harmonica? Try that one."

Jiang Baiyan raised his elbow and shook Han Bo's chest: "Can you play the harmonica?"

Han Bo said: "If it's the harmonica, you can try it."

Jian Jing handed him the harmonica she had taken away before, and said: "The music score put with this harmonica is a Christmas song."

"Oh, it's the score of Jingle Bells, right?" Han Bo frowned and recalled the score. He looked serious and a little handsome. "Let me try."

He thought for a while and played the harmonica.

The pleasant music dissipated.

The monster holding the doll immediately reacted, jumped off the bed, and slowly walked towards them.

Jian Jing made a gesture to Han Bo.

He understood, walked out of the room backwards, and attracted the little girl to leave her original position.

The two slowly left the ward.

Jian Jing stretched out his hand swiftly, immediately slipped in, took the cube from the pocket of the white coat, and handed it to Coco: "You go open the door, I'll help Han Bo."

Coco's eyes flickered, revealing a sweet smile: "Okay."

She pulled Zheng Keyan together and began to study the equation.

This password is not difficult. There are numbers in the squares. Adjust the order of the numbers and the symbols, find the equation that is true, and put the key of the equal sign on it.

The questions were not difficult, and even Zheng Keyan, who was not very good at math, could help.

The two girls whispered for a few minutes, and suddenly clapped their hands and shouted, "Done."

The door opened.

Jian Jing and Han Bo rushed back, taking the disappeared Cao Yu with them.

"Where did Teacher Cao go?"

Cao Yu smiled bitterly, "I took a wrong path and went upstairs. I didn't see you, so I had to come back." As he spoke, he poked his head and looked into the room.

This was an office, and there was a safe on the table, which obviously contained important clues. But there was a reception area between the desk and the door.

Two sofas were placed face to face, with a coffee table in the middle.

There was a chess set on the coffee table.

The sofa against the wall was empty. A torn white coat was stained with blood. A tall and burly monster sat on the sofa opposite, with broken meat and bone fragments scattered around his feet.

Well, all signs indicate that this monster ate the white coat.

"This one is also a special patient." Jian Jing thought for a moment and said firmly, "The nameplate of ordinary monsters is iron, Helen's is copper, and the number is 002, and he is 001."

Han Bo's scalp exploded: "Do you mean to play chess?"

"Yes." She nodded, "This should be George."

"What will happen if you lose?" Coco asked.

Jian Jing: "Be eaten."

Everyone felt a chill and looked at each other: "Who can play chess?"

Cao Yu smiled bitterly: "I know a little."

"Leave it to Teacher Cao." Everyone tacitly made way.

Cao Yu naturally would not miss the opportunity to show himself. He took a deep breath, slowly moved to the sofa and sat down.

The monster did not react.

Until he picked up a chess piece and dropped it on the chessboard.

The monster moved, its tentacles squirmed, as if thinking, and then two tentacles clamped the chess piece and dropped it to the corresponding position.

While the monster was concentrating on the game, Jian Jing half-crouched, quietly passed the sofa, and sneaked into the office area. She quickly scanned the desk and planned to open the safe first.

Who knew that the safe was empty.

The lock was open, and the door opened as soon as it was pulled, but there was nothing inside. She was stunned for a moment, and seeing that Cao Yu's chess game was still going on, she simply looked through the scattered materials first.

The amount of information here is much greater.

She saw an unfinished letter on the table, and the content was as follows:

"Dear friend, when you receive this letter, I may no longer be in this world. The speed at which things happen is far beyond my imagination. I regret it very much. I don’t know whether it was right or wrong to agree to join Club X. Unfortunately, no matter what the answer is, I have no chance to choose again.

"Let me tell you what the letter I sent you before is about. You and I graduated in the same year. When you were studying at Harvard, your grades were better than mine. I think you should have guessed it.

"Yes, the report I showed you is very special, belonging to a special group of patients. I don't know if you have heard the rumors in this state, about the special guests who came one night... I thought it was nonsense until X Company found me. Yes, you don't know the X Club yet, this is a special society funded by a group of wealthy people, whose only mission is to find the truth...

"Because of my talent in medicine, I was recruited into the Medical Department and was responsible for investigating Factory C. You may not have heard of the name of this company. It is so ordinary that even people who live nearby can't remember what it is called, or even say what their work content is.

"Such a mysterious place must be extraordinary. This is a secret base of the government. Some locals were recruited as a cover. But according to the club, this is the place where the rumored aliens are studied!"

The handwriting of this handwritten letter was sloppy, and it was obvious that the writer was in a state of shock and could not remain calm.

But when Jian Jing saw this, she felt a big "囧" in her heart.

It is indeed a haunted house in Country A. The plot is too local.

She turned the page and continued reading.

"We couldn't sneak into the factory to investigate, so we could only observe from the surroundings and wait for the opportunity. Who knew that the accident would happen like this? An unknown explosion occurred in the factory, causing many casualties. The relevant personnel were taken away by the FBI, but a few peripheral workers who served as cover were left behind. They developed many incredible symptoms.

"We took them to the hospital, under the pretext of treatment, to observe their changes. First, the white blood cells in the blood increased greatly... (a bunch of medical descriptions omitted), their organs began to become diseased, as if they had been completely occupied by cancer cells, dividing so rapidly... the perception of sound and smell decreased, and the resolution of light was greatly improved...

"Originally, everything was going smoothly, but just half a month ago, a terrible thing happened... They began to die, mutate, and devour... The infection is complete... I don't know how to deal with the current situation... They have become them?"

The second sheet ended here. The

third sheet was not finished, with only a few scribbled words:

end... kill... must... urgent... alternative... invasion plan?