China's famous detective Jiangnan: There are ghosts on campus

Chapter 70 Important Clues (2)

Da-da, da-da.

My sleeping consciousness was suddenly awakened by the sound of the leather shoes touching the floor tiles.

Squeak.

I woke up, but I didn't open my eyes in time, and the people outside didn't knock on the door before they came in. 
It's Officer Luo, I quickly analyzed in my mind.

If it was a sneaky person, walking would not make such a loud noise.And the people who will come here will not have other people except the special case team. He directly opened the door and entered, indicating that he is not afraid that there will be people inside.

"Jiangnan, Jiangnan?"

It was indeed Police Officer Luo. He patted my shoulder to wake me up.

"Why are you here so early?" I suddenly opened my eyes and asked him.Police officer Luo is still wearing his uniform today, and his eyes are not very energetic. It seems that he, like me, didn't sleep for long yesterday.

Officer Luo seemed startled by my sudden voice, and said after a while, "We finished interrogating Lin Huiqing last night, and she has confessed everything."

"What?!" I stood up all of a sudden, and asked a little puzzled and angrily, "It's only been a few days since she was brought in? Did you extract a confession from her?"

"What did you say?!" Police officer Luo was furious, and shouted at me, "We are the police, not the ancient Jinyiwei! Let me tell you, don't think that you can slander the police just because you are a little smart!"

Hearing Officer Luo's angry reprimand, I realized that I was impatient. The case is so big now that the special case team will not do anything illegal to Lin Huiqing.And Lin Huiqing is just an ordinary girl living in a comfortable world. Perhaps it was her fear and fear in the face of the state apparatus that made her surrender, and she confessed because she had the idea of ​​relief after admitting it.

I shook my head and said to Police Officer Luo: "Excuse me, I'm sorry for what I just said. But, maybe you want to read this."

As I said that, I took out the powder in a small bag I found last night and handed it to him.

"This is...?" Officer Luo's anger still remained on his face, but he was attracted by the things I handed over. He opened the bag and gently made a little powder to stick on his fingers. Then he guessed with some uncertainty: "This...is it aluminum powder?"

"Not bad." I pointed to the bag and said, "Aluminum powder is a kind of silver metal pigment. It is made of pure aluminum foil with a small amount of lubricant, smashed and crushed into scaly powder, and then polished. It is resistant to light and heat. The reflection performance is very good."

"Among them, aluminum powder has a very important feature, that is, it is flammable when exposed to water."

Officer Luo listened to me. Although he was puzzled, he didn't ask any questions. He knew I didn't finish.

"The power went out at the last party, you have heard of it."

Officer Luo nodded, "I know. Why? Could it be related to Zhou Shengrong's murder?"

I didn't answer his question, but continued: "The power outage was deliberately caused by the murderer who took advantage of the characteristics of aluminum powder that ignites when it meets water. Unplug it, forming stagnant water to infiltrate, just under the pool in the men’s toilet is the distribution box.”

I then pointed to the three water pipes I put on the wall and said, "One of the water pipes is of a different brand from the other two. The murderer destroyed the water pipe and replaced it with a new one. You can take it For laboratory tests, I wore gloves yesterday, but it is estimated that the possibility of fingerprints on them is very small. In addition, Lao He, who was on duty last night, you can go to him to make a record, which can be regarded as evidence. "

After listening to my words, Police Officer Luo looked at the three water pipes beside the wall, his expression was no longer angry, but deep in thought.

(End of this chapter)