I made myself the protagonist

The corpse on the first floor is located in the seventh room. The deceased was a young girl. All four corpses died of beheading, and the death conditions were quite bloody. But except for the note in the pocket, there was no other abnormality.

While everyone was studying the photos, noise came from the radio again.

But this time, the poisonous mist at the exhaust vent became denser than before. Shen Tinglan, who was not wearing a mask, accidentally took a breath of air and suddenly felt burning in her lungs, and couldn't help but cough violently.

Su Li took a deep breath and immediately put the mask on the other person's face. Shen Tinglan adjusted his breathing and felt much more comfortable.

"I can't tell the difference between these sets of numbers no matter how I look at them. There are less than ten minutes left, and the laboratory is so dangerous now. I can't figure it out just by looking at a few photos. Otherwise, try Try it!”

Looking at the increasingly dense poisonous fog above his head, Tan Jianzhong suddenly became anxious and sweating profusely.

After hearing what he said, Shen Tinglan, Su Li and Joey Yang did not say anything; while the injured Ji Sha wore a mask and closed her eyes and leaned against the wall. She kept humming, and the pain almost made her lose concentration. The ability to think mentally.

Seeing that no one paid attention to him, Tan Jianzhong couldn't help but stand up and pace back and forth while looking at the countdown screen lit in the center of the hall, his expression becoming more and more irritable.

Joey Yang frowned, holding a pen in his hand, and kept calculating the four sets of numbers on the paper, trying to find some correlation among them.

First floor:8641

Second floor:5397

Third floor:6105

Fourth floor:9752

These numbers seemed to be randomly composed and had nothing in common with the laboratory room numbers and floors. Coupled with the interference of the poisonous gas, he felt increasingly uncomfortable. When the analysis was fruitless, Joey Yang He quickly found Tan Jianzhong and asked to exchange masks with him.

Shen Tinglan thought for a moment, and his eyes quickly shifted from the numbers to the photos on the phone that were lit in front of him.

In order to see the details clearly, he took off the mask and handed it to Su Li. He kept zooming in and out of parts of the photo, observing every detail on the body.

Since the room where the corpse appeared was dark, the players all adopted the method of one person using a flashlight and the other using a mobile phone to take pictures.

Feeling that some parts of the screen were too dark, Shen Tinglan adjusted the brightness of the phone screen to the highest level, but there were still many places that could not be seen clearly.

"It would be nice if there were lights on in the house..."

Ji Sha squinted her eyes and sighed weakly: "It was too dark in the laboratory at that time, and I couldn't see anything at all. It was because of this that I didn't notice the tentacles on the ground and was attacked by it. If Brother Yiyang hadn't been here, I might have died..."

"What did you say?" At this moment, Shen Tinglan, who was comparing photos repeatedly, suddenly raised his head and looked at Ji Sha with a strange expression.

The latter was slightly startled, then honestly repeated what he just said: "Brother Yiyang saved my life..."

"No, the previous sentence." Shen Tinglan seemed to have captured some information.

"It's very dark in the laboratory, and you can't see the tentacles on the ground..."

Before Ji Sha finished speaking, Shen Tinglan's eyes lit up and she punched her fist: "This is it!"

After he finished speaking, he picked up the mobile phone on the ground, zoomed in on the screen and said to everyone: "From the beginning, I felt a little strange... Everyone, take a closer look at the ground and wall near the body."

"I understand." After Shen Tinglan mentioned this, Su Li stepped forward and immediately discovered the flaw: "Blood stains."

"Yes!"

Shen Tinglan pointed to the ground under the corpse in the photo and explained: "I focused on the corpse itself, but ignored the scenes around them. When these dead people were attacked, the blood from the wounds flowed along the body. When it reached the ground, it sprayed all around. However, there was no splatter-like blood stain on the wall behind a corpse."

When human arteries rupture, driven by arterial blood pressure, blood will spray out in a fan shape to the surroundings, leaving traces of arc-shaped blood columns on the wall.

However, the strange thing is that except for the podium and blackboard behind the corpses on the first, third, and fourth floors, which are covered with large blood stains; the walls and desks where the male corpse is leaning against on the second floor are clean, and no blood can be seen. trace.

"The reason why the room is dark, in addition to hiding murderous intent, is probably to prevent us from noticing these details." Shen Tinglan glanced at Su Li.

Otherwise, they would have discovered something was wrong with the wall the first time they saw the photo.

"Judging from the accident scene and the traces on the bodies, the laboratory was the first place where they were killed. As for why the blood on the wall behind the bodies on the second floor disappeared, I think it may have something to do with the real password." Shen Tinglan said.

"Then what should we do next?" Joey Yang glanced at the time. There were only six minutes left before the end of the game.

"Lumino reaction." At this moment, Su Li suddenly said.

The luminol Su Li was referring to is a strong acid. In a dark environment, it can react with the iron in hemoglobin to produce a blue light. This is also a common method for detecting blood in modern criminal investigations. .

"That's right! This is the laboratory building. We must be able to prepare the luminol reagent! With it, we can make the disappeared blood appear." After Shen Tinglan finished speaking, the remaining three people showed confusion. color.

"I haven't read much. I can't understand a word of what you are saying..."

Tan Jianzhong scratched his head in embarrassment. Joey Yang also said that he was not good at this field.

"In this case, Su Li and I will go looking for raw materials for making luminol reagents, and you guys will stay here." Shen Tinglan glanced at the countdown on the screen. There were less than nine minutes left before the end of the game.

"Then you mean to take away the two masks?"

At this moment, Tan Jianzhong suddenly spoke. He looked at Shen Tinglan and Su Li with a very reluctant tone: "Now that the poisonous gas content is so high, it will be very troublesome for the three of us to take turns using the same mask."

After hearing what he said, even Joey Yang's expression became hesitant.

He glanced at Ji Sha lying on the ground and said slowly: "Yes, we have another wounded person here, and we only have three masks, which are really not enough..."

"It doesn't matter."

Shen Tinglan saw the entanglement of the other three people, and snatching the masks now would only cause more trouble and waste unnecessary energy.

Therefore, he said: "I have seen the floor plan of this building. The warehouse for storing chemical raw materials is also on the second floor. Su Li and I will work together. Sharing one is enough."

After he finished speaking, he picked up the wet cloth at hand and covered his mouth and nose. Su Li nodded, and the two ran up the stairs together.

"Then we'll wait for you downstairs!"

Seeing Su Li and Shen Tinglan leaving, Joey Yang felt very guilty: Although he knew that he was selfish in doing so, in such a dangerous situation, no one would give up his mask easily. of.

At the same time, Shen Tinglan and Su Li had arrived at the room where the chemical raw materials were stored. In order to speed up, the two of them searched the cabinets where the raw materials were stored.

"You are responsible for finding hydrogen peroxide, beakers, and glass watering cans." Su Li said to Shen Tinglan.

"Okay." The latter nodded, found the utensils from the table, and acted quickly according to Su Li's instructions.