Ouyang Shu and Bai Lang's cars rushed to the experimental building one after another.

Bai Lang called Yuan Huayan, a criminal investigation trace expert who had been asleep in the back seat of the car: "Teacher Yuan, wake up, it's here!"

Yuan Huayan looked sleepy and unhappy: "You wolf cub toss me again! You are still as young as you?"

Bai Lang accompanied the smiling face, put one hand on the top of the car door, respectfully welcomed Yuan Huayan out of the car, and with one hand a flashlight to illuminate the road under Yuan Huayan's feet: "Teacher Yuan, this time is definitely a big case, don't you believe me, don't you still believe Ouyang? A strange sound can send a big living person, think about it, such a rare thing, except for you, who can find out and figure it out?"

Yuan Huayan disagreed, he bent down and took out his special toolbox, while muttering: "Hmph, big case, is it a matter of human life or national security? In your eyes, everything is a big case, and losing a box of lipstick is also a big case, hum!"

Ouyang Shu walked over, took the toolbox, said please, and took the lead in walking towards the door of the laboratory by the dim landscape light outside the experimental building.

Zhang Xiao had already received a call from Ouyang Shu, heard him knock on the door, and hurriedly opened the door from the inside.

Bai Lang and Yuan Huayan took out shoe covers and gloves from their pockets very professionally and put them on, Yuan Huayan took the toolbox in Ouyang Shu's hand and opened it, took out a filter from it, buckled it on his eyes, and then crossed the strap over his head and tied it to the back of his head.

The survey began.

Bai Lang's face was serious, he observed up and down, left and right, while using a spotlight flashlight to look at the door frame and door lock, while staring at Yuan Huayan's every move.

Yuan Huayan changed the old state of the dragon clock just now, and his movements became light and fast. He first lay on the ground and searched carefully, rubbing his hands on it, then suddenly walked quickly to the door of the laboratory, carefully checked the doorknob of the laboratory, and finally, lying on the floor of the laboratory, shaking his head while observing, muttering: "Strange, strange!"

Bai Lang didn't dare to get too close to him, and when he heard him say this, he hurriedly asked, "Teacher Yuan, did you find anything?"

"What can you find? not a single decent footprint left, stepping on it in a mess, finding nothing!" he said, taking out a bottle of developer from his toolbox and spraying it on the ground, then gently brushing it with a small brush.

Bai Lang stopped asking, and let him crawl back and forth from the door to the middle of the house for a while, and from the middle of the house to the door for a while.

The lab was still the same as when it left, the alcohol light on the test rack had been extinguished, a row of test tubes was still on the shelf, and there was a broken test tube on the floor, and black blood stains extended from the broken test tube to the door.

Bai Lang quietly asked Ouyang Shu what he was doing at that time, and Ouyang Shu recalled: At that time, Liu Hao, Zhang Xiao and I were doing experiments, when we heard a loud noise, and then that person appeared.

Zhang Xiao leaned over and said, "I was helping you get a pen." ”

"Yes, you are holding a pen, Liu Hao was holding a test tube at that time. ”

Bai Lang heard it in a fog, and he asked the two of them to refine it again, and it was best to reproduce the scene.

Zhang Xiao described delicately: "Ouyang asked me to take out the No. 3 reagent from the refrigerator and hand it to Liu Hao, and then Liu Hao added it to the test tube, the color changed, he held it up to show us, and then Ouyang tore a note and asked me for a pen." Then Ouyang wrote the chemical formula, held it up in front of his eyes, looked at it, and said, I finally found it. Then the voice rang out. Then Liu Hao knocked the test tube on the table and shattered it, and then as soon as the sound stopped, the person stood between Ouyang and Liu Hao. ”

After Zhang Xiao's "then" was finished, Bai Lang asked Ouyang Shu: "How long has that strange person been standing face to face with you?"

Ouyang Shu thought for a moment and shook his head: "I don't remember." It seems that as soon as I asked, 'Who are you?', Liu Hao's wrist burst and bleed, and we were busy with him. The man, the man seemed to stick his head over, but did nothing, turned around and went out. ”

"What about the smell, do you smell anything, does he have any special smell on him since he appeared?"

Ouyang Shu shook his head.

Bai Lang shrugged his shoulders: "Also, this laboratory smells of everything, no wonder you can't smell it." ”

Zhang Xiao argued: "We have an exhaust system, and the air in the room is very good. ”

"Is there a ladder?" Yuan Huayan's words interrupted their discussion.

Zhang Xiao hurriedly moved the herringbone ladder of the laboratory over and stood beside Yuan Huayan. Yuan Huayan climbed the ladder and carefully observed the roof with a filter.

Zhang Xiao stuck out his tongue: "Could it be that this person fell from the roof of the shed? Impossible, Liu Hao and I have been here for a day, if he sticks to the ceiling, we will definitely be able to see it!"

Bai Lang smiled shrewdly: "You haven't heard of the invisibility cloak, have you?" Then he turned around and asked Ouyang Shu: "By the way, you should always see what he is wearing, what style, what color?"

Ouyang Shu recalled: "It seems to be a very comprehensive color, a little metallic, black, blue, yellow. It's the kind that is put on from top to bottom, it's not very snug, there are no cracks, and even the eyes and nose are wrapped inside. ”

"Then you can always tell if it's a man or a woman, right?"

"Man, 170cm tall, weighs 75kg, has no texture on the sole, size about 40. Yuan Huayan walked down the herringbone ladder and said while picking off the filter: "The damage at the scene is too serious, and I didn't find any traces of coming in, only traces of going out, and I didn't hide on the ceiling." He yawned and continued: "Since he didn't hurt anyone, this matter is over, and I have to go home to sleep, my old man is not younger than you, and I can't afford to toss!"

Zhang Xiao said anxiously: "Then, don't you look for it? You can enter and exit our laboratory casually, it's too terrifying, right?"

Bai Lang also hurriedly picked up: "Yes, Teacher Yuan, aren't you interested in this kind of strange scream that a big living person appears out of thin air? ”

Yuan Huayan had already taken off his gloves and shoe covers, and the toolbox was also sorted out, so he picked it up and walked out, saying as he walked: "What is so strange, rare and strange." There are many things that appear out of thin air, and it is not always confirmed that there are no demons and monsters in the end? The cat has a cat and a dog has a dog, he must have his way to come, and there is no point in dwelling on this matter. I believe that I can't find his whereabouts when I go out, there is a road outside the door, and the gods can't find any trace of him. Alright, let's go!"

Bai Lang had no choice but to follow closely.

It's still dark outside. Yuan Huayan held a flashlight, carefully looked at the road from the gate to the road, turned back to Bai Lang and Ouyang Shu and said, "I predicted correctly, this person went directly to the road, and the traces were broken." ”

Sending Bai Lang and Yuan Huayan away, Ouyang Shu and Zhang Xiao returned to the laboratory.

"Although there were some twists and turns, the success of the experiment is still worth celebrating. When Liu Hao comes back, I will invite you to a big dinner. ”

Zhang Xiao was still immersed in the emotions just now, he changed his position in the room, repeating his movements again and again.

Ouyang Shu saw Zhang Xiao pick up the pen and put it down and put it down again, and suddenly remembered the chemical formula he had written, and when the sharp voice sounded in his impression, he folded the note and put it in the pocket of his suit jacket.

He hurriedly took out his mobile phone and called Magnolia.