Gu Yanan and Nan Hanfei both felt that something was wrong.

Following Gu Jiashu's prompt, the two found a cabinet for salt from a small warehouse in the back kitchen.

Among the pile of formally packaged salt bags, a bag of salt sealed with transparent plastic bags and plastic strips is eye-catching.

This bag of salt in a different package should be the bag of salt recovered from the homeless man that Li Ming said.

Gu Yanan was about to reach out to take it, but was pulled by Nan Hanfei.

"Don't move, protect the scene, there may be fingerprints on the bag."

Gu Yanan withdrew his hand, "I'm sorry, I forgot just now, you are the expert in solving the case." ”

Nan Hanfei called his colleagues from the Police Department's Traces Section to collect fingerprints.

After that, the salt bag was taken out of the cabinet, and a new layer of evidence bag was put on and brought back to the police station.

"How long does it take for a fingerprint to get results?" Gu Yanan asked.

"A few minutes."

"So fast!"

"Well, as long as the fingerprints are scanned out, and then compared with the fingerprints in the fingerprint information database, the results will be available soon, the key is to collect usable fingerprints at the scene, and then return to the police station for processing."

"When will the results of the salt identification be available?"

"The thallium testing method used by the police station is the same as your disease control method, and the time should be about the same."

"Oh, that's going to take hours."

It will take some time for the results to be identified, but the on-site investigation will continue.

Since Li Ming said that the salt was recovered from the homeless man in the back alley, finding the homeless man directly should reveal more clues.

The back alley of the Lianhai Native Restaurant.

Gu Yanan and Nan Hanfei looked around along the back alley, but did not find the homeless man.

Could it be that the homeless man has moved?

was about to ask someone to inquire, when Gu Yanan suddenly smelled a smell of fireworks.

It's not the smell of cooking smoke in the back kitchen of the restaurant, but the smell of fireworks from wood and firewood.

Gu Yanan looked back, and sure enough, there was a puff of black smoke coming out not far from the small garbage station in the back alley.

Following the black smoke, Gu Yanan and Nan Hanfei found a small shack made of branches, wooden boards, and plastic sheets in the hidden place of the alley partition next to the garbage station.

Squatting beside the shack was an old man in tattered clothes, cooking on a fire with a pile of freshly picked up dead branches and weeds.

The dead branches were a little damp, and when they were lit, they emitted a large amount of gray-black smoke.

There was an iron shelf on the fire that I had picked up out of nowhere, and on the iron shelf was a small iron pot.

There was half a pot of water in the pot, it was still cold, and no heat came out.

On the ground next to the old man lay half a pack of noodles.

This should be the homeless man Li Ming said, he is cooking noodles on a fire.

Gu Yanan had seen beggars on the street, but the homeless people in front of her inexplicably made her sad.

"Hello, excuse me." Gu Yanan showed his work card.

The old man couldn't help but be stunned for the first time when he heard someone talking to him so politely, and then reacted and hurriedly explained, "If you don't let the fire be lit, I'll put it out immediately." ”

The old man trampled on the fire that had just risen with two or three feet.

"It's not ......" Gu Yanan wanted to explain, but he didn't know how to explain for a while, so he could only get to the point, "Old man, there are some situations I want to know from you." ”

Gu Yanan took out his mobile phone and flipped out a photo.

The photo was taken in the back kitchen of the local restaurant just now, and it was the specially packaged package of "salt" in the cabinet.

"Old man, have you seen this bag of salt?"

The old man stared at the photo for a few seconds, opened his mouth, but did not speak, and stopped talking.

Gu Yanan thought to herself, it seems that the old man must know something, but he didn't speak, is he afraid of her identity?

Without waiting for Gu Yanan to think of other wording to explain, Nan Hanfei had already shown his work card, "I am a policeman, please cooperate with the investigation." ”

"Comrade policeman, it's none of my business, I really didn't steal salt."

Sure enough, in terms of interrogation and questioning, the police's work card is better than that of disease control.

"Speak well and explain what happened." Nan Hanfei's tone was a little softer than just now.

"I didn't steal the salt in the photo, I picked it up.

The other day, I was picking up paper shells and drink bottles in a trash can near the Corniche when I happened to come across a truck that overturned and overturned into a green belt on the side of the road.

Later, many rescue vehicles and people went, the trucks were pulled away, and the goods that fell out were also picked up.

When everyone was gone, I saw a yellow plastic bag in the grass.

I went over and picked it up, and found two packets of salt in the yellow bag.

I thought that two packets of salt were worthless, so I brought them back and put them in this shack.

Shortly after I came back that day, someone came running and said that I had stolen the sausages from his shop.

I really didn't steal.

He saw that I picked up the sausage he ate in the back alley, it was a stray cat who stole the sausage to hang outside, and dropped two on the road, and I really picked it up that time. ”

"Okay, go on, and later." Nan Hanfei asked the old man to bypass the points of "stealing" and "picking up", urging him to continue.

Later, I explained to him that he would not listen, so he searched my shack, but found no sausages, and found two bags of salt that I had picked up, saying that I had also stolen them from his shop.

He didn't listen to me and took the two packets of salt with him.

After that, he never came to me again.

Comrade policeman, I really didn't steal the sausage and salt. ”

Gu Yanan took out a photo of the waiter Li Ming on the hospital bed again, and asked the old man to identify, "Is this the person who took the salt?" ”

"Yes, that's him! What happened to him? How do I wear a hospital gown? ”

Everything is right, only the last one is missing.

Where did the truck with two bags of "salt" left behind? Where to go?

Since there has been a car accident, there must be a record on the side of the traffic police.

Nan Hanfei began to call to confirm.

A few minutes later, I received the exact message, "The School of Chemical Engineering of Lianhai University was moving to a new campus that day, and the truck that crashed was one of the items that transported the laboratory." ”

Next, I will go to the new campus of the School of Chemical Engineering to investigate.

Before leaving the back alley of the Tucai Restaurant, Nan Hanfei pointed to the homeless man and explained to the policeman Xiao Li, "Take the person back to the police station first......

After listening to Nan Hanfei's words, Gu Yanan asked anxiously: "Do you police want to detain him?" ”

"No, you listen to what I say, I want Xiao Li to take him back to the police station first, and then contact the social welfare agency shelter to completely solve the problem of the elderly, so that he will not sleep in the open in the future."

"Oh." Gu Yanan breathed a sigh of relief.

——

Dongcheng District, Lianhai City, the new campus of Lianhai University.

The new campus is located right next to the sea and is only separated from the beach by a coastal road.

The police car and the on-site flow shunting vehicle arrived at the east gate of the new campus of Lianhai University along the coastal road.

The east gate is not the main entrance of the new campus, but it is also guarded by security guards.

After showing the work card, several official cars passed all the way to the front of the experimental building of the School of Chemical Engineering.

Because the municipal emergency command team had notified the relevant person in charge of Lianhai University before coming, Nan Hanfei and his entourage, accompanied by several leaders of the School of Chemical Engineering, directly entered the laboratory building.