On an ordinary day, Zhao Qijin came to the company in a hurry as usual, and after punching the card, he sat on the chair and gasped, which was the nth time Zhao Qijin was late this month. While complaining about the city's congestion and unreachable housing prices, Zhao Qijin started his day's work slowly.

After a while, Comrade Zhao Qijin received a call from his roommate, saying that he was going to leave the city and go back to his hometown for development, and the room had been subleased to another person, so he said to Zhao Qijin, and gave Zhao Qijin's new roommate's phone, and then hung up the phone in a hurry.

Zhao Qijin recalled the phone call of his roommate just now, he had never heard that his roommate was going home to develop, why did he suddenly have to go back to his hometown, and he was so anxious that he said he would leave. The mobile phone rang, and Zhao Qijin saw that it was the phone number of the new roommate given by the roommate just now, so he called in such a hurry?

"Hello, is it Mr. Zhao Qijin?"

"Hello, it's me"

"Mr. Zhao, I'm your new roommate, when you have time, we'll meet."

"Oh, I have to go to work during the day, so I'll go back and meet in the evening."

"Okay, see you that evening, goodbye."

"Goodbye."

When lunch time came, Zhao Qijin received a call from his new roommate, saying that there was a thief in the house, and the people from the police station were investigating, hoping that Zhao Qijin could come back immediately and count what property was stolen. Zhao Qijin was anxious when he heard this, how could all this bad things happen to me, how could a thief enter the house in broad daylight? No matter how strange he felt in his heart, Zhao Qijin still asked the leader for leave and hurried back to the rental house.

Zhao Qijin rushed back to the rental house and found that the door was hidden and there were no voices from the police or others. Zhao Qijin pushed open the door and found that the bedroom doors were open, and things were turned over at random, as if they had been stolen. Zhao Qijin continued to walk in, and found a stranger lying on the floor in the living room, with a knife stuck in his chest, and blood flowed all over the ground, Zhao Qijin was frightened. But he still slowly walked towards the stranger and tried his breathing, Zhao Qijin sat paralyzed on the ground, and the person lying in front of him was already dead.

What Zhao Qijin wants to do now is to call the police quickly, when he took out his mobile phone, the mobile phone suddenly showed that a strange call came in, and Zhao Qijin subconsciously answered.

"Mr. Zhao Qijin, hello. Don't be nervous and scared, the person who died on the ground is your new roommate, look at the knife in his chest is very familiar? That's right, I found it in your room, and it was full of your fingerprints. Listen, is there a siren outside, yes, I called the police. What about you now, there are two options, one is to wait for the police to come, the scene is full of your fingerprints, the murder weapon is yours, and it is covered with your fingerprints, you can't explain it, and the second is to run immediately now, go to the night bar on Zhongyi Road, find someone named Li Yiren, and he will tell you what to do! You're running out of time to choose from! ”

Zhao Qijin was already stunned by the scene in front of him, and when he heard the sound of the siren, he was so frightened that he could only rush out of the door, take a taxi and go straight to the night bar.

When he came to the night bar, the waiter stopped Zhao Qijin.

"Hello, sir, we are not open for business now, you have to consume, please come back after 5 pm."

"I'm not here to consume, I'm here to find a person named Li Yiren."

"You look for Manager Li, wait a minute, I'll help you call."

The waiter turned around and walked in, and Zhao Qijin had to wait at the front desk. After a while, the waiter returned.

"Sir, hello, Manager Li is waiting for you in the office on the fourth floor, you take the elevator, go to the fourth floor, and go straight to see the manager's office."

"Okay, thank you."

Zhao Qijin took the elevator to the door of the manager's office on the fourth floor, knocked on the door, and there was a sound inside.

"Please come in."

Zhao Qijin pushed the door in and saw a polite middle-aged man, sitting behind a desk, looking at a document. Zhao Qijin knelt down directly and cried,

"Big brother, please, let me go, don't play with me like this, I'm just a little clerk, I don't know anything, please let me go."

The middle-aged man looked up at Zhao Qijin, put down the documents in his hand, stood up, walked to Zhao Qijin's side, and helped Zhao Qijin up.

"Mr. Zhao, we don't want to play with you, we just want you to do us a favor, a small favor."

"You say, as long as you can clear me of murder, anything?"

"Very good, I have a bag of things here, you can help me send it to Unit 301, Building 11, Happy Community, find a Mr. Qin, and give him the things."

"Is that easy?"

"It's as simple as that, you bring me one more thing from him."

"Isn't this something ordinary? Why don't you let me deliver it? ”

"Isn't there a classmate of you in Unit 2 of Building 11 in the Happy Community? When the doorman asked, you said that you went to find your classmates, remember? ”

"Remembered."

"Then hurry up now, come back, and I'll give you proof that you didn't kill anyone."

Zhao Qijin hurriedly took a taxi to the happy community, and the security guard at the door asked Zhao Qijin to register as a visitor, and Zhao Qijin wrote it down to find his classmates according to Li Yiren's instructions.

Zhao Qijin knocked on the door of 301, and a person came out of it, asking who to look for, Zhao Qijin hurriedly said, looking for Mr. Qin. The people inside let Zhao Qijin enter the room, the room was not decorated, and it was still a rough room. There is a large table in the living room, and all kinds of bottles and cans are cluttered on the table. The man brought Zhao Qijin to a pot and said to Zhao Qijin,

"I'm the Mr. Qin you're looking for, you take the things that Manager Li asked you to bring, take them apart, and pour them into this pot."

Zhao Qijin was bent on evidence, so he had to obey Mr. Qin's instructions, open the bag, and then introduce the powder inside into the pot. Mr. Qin commanded again,

"Take this glass rod and stir slowly until the powder is all dissolved."

Zhao Qijin took the glass rod and stirred it slowly, and after a while, the powder dissolved. Mr. Qin added something to the pot again. And he commanded:

"Now start stirring slowly until something settles."

Zhao Qijin obeyed the instructions and stirred slowly, and there were really white crystals coming out, and Mr. Qin hurriedly poured the pot into a sieve. The white crystals were left in the sieve, and Mr. Qin carefully packed the crystals into a bag and handed them to Zhao Qijin.

"Bring this back to Manager Li."

Zhao Qijin's heart was full of doubts, but he could only do it. Out of the happy community, Zhao Qijin took a taxi back to the night bar, went directly to the fourth floor, knocked on Li Yiren's room, handed over the things to Li Yiren, and said:

"Now you can give me the evidence."