last case

The staff of the library gave Chang Lao a unified evaluation. Hearing the news of Chang Lao's suicide, they were all shocked. They all felt that it was impossible for Chang Kunbing to commit suicide, and someone must have murdered him.

After about a while, all the staff of the library arrived, waiting for the police detective's question one by one.

Several little girls were so frightened that they almost cried. They didn't expect such a thing to happen.

The reception room in front of the library is full of people every day, and they are on duty in rotation and will not leave work.A young man in his thirties was on duty in the reception room yesterday.According to him, after getting off work last night, he didn't see anyone entering through the main entrance.He didn't doze off at night, and it's true that no one has ever gone in.Not a single suspicious person was found, and I really don't know who would do such a cruel thing.

The last person to leave the library staff office yesterday was an intern in her early twenties, a girl who had not yet graduated from college.

The girl told them that she had just left the library at about ten o'clock last night.Because she is in her senior year and is about to graduate soon, she is preparing her graduation thesis in advance. After get off work, she looked for some materials in the library and prepared to take them home to continue reading.

It took her a lot of time to find the materials, and after all the materials were found, she went back to the staff lounge to pick up her things and prepare to go home.

The girl said: "When I went back to the staff lounge, the door was unlocked and there was no one there. But I think Chang Lao might not have left."

Although the girl didn't come here for a long time, and only started helping here in the second half of the junior year, she observed carefully.According to the girl's observation, Chang Lao likes to make tea in a glass jar and makes tea every day.The glass jar should be the glass jar of canned fruit in the supermarket, Chang Lao has always used that.

The glass jar was a little yellowed by the tea, but Chang Lao seemed to like this cup very much and used it every day.

And the girl also said that before Chang Lao left every day, she would pour out all the tea and tea leaves left in it, and clean up the cup before leaving.

But when she came back to pick up her things, she saw an old glass jar on the table with tea leaves and a bottom of tea in it, which had not been cleaned up as usual.

The girl didn't care about it, thinking that Chang Lao might have forgotten it.When she left the library, it was about ten ten o'clock. Because she had to catch a bus, she checked the time on her phone when she went out.

The girl was sure that she didn't lock the office door when she went out, but just closed it gently, and then she left.When leaving, the girl didn't meet any strange people, but saw that the light in the reception room at the door was still on.

After everyone questioned the library staff, they took the collected evidence and corpses back to the police station.

Forensic doctor Yang was in charge of the corpse in this case, but forensic doctor Yang didn't say a word of refusal when Tang Xin wanted to help.

Tang Xin said something to Xie Jibai, and then followed Yang Forensic Doctor to go to the autopsy first.

Xie Jibai and Bi Chengyuan had other things to do, and that was to check the surveillance video of the library.

There are surveillance videos in the library, but they are all installed outside, mainly at the gate and around the bookshelves.Although there is a surveillance video in the staff office, it has not been opened and used for a long time.

The staff of the library said that the monitor should have been broken more than a year ago and has not been turned on again. Everyone didn't expect something to happen, so they didn't care at all.

Xie Jibai and Bi Chengyuan checked the surveillance video. After the library closed, the last employee girl left the library, and no one came in after that.

The surveillance at the gate happened to be able to capture the reception room. The light in the reception room was always on, and the young man inside could be seen all the time.He went to the bathroom once, around two o'clock.But it's not the bathroom in the library, but the public toilet next to it.

The bathroom in the library is on the second floor. You need to climb upstairs. There are dark holes in it, and you have to turn on the lights, which is very troublesome.So the young man told them that those who work in the communication room usually choose to go to the public toilet outside to solve the problem.The public toilet is just across the road, very close, it doesn't take 5 minutes to go back and forth, much closer than the toilet on the second floor.

During the period when the young man went to the bathroom, the reception room was empty, but the surveillance did not capture anyone sneaking into the reception room during this time.

The surveillance inside did not capture anyone walking around at all.

Xie Jibai rubbed his eyes. He stared at the screen for a long time, his eyes felt sore, and he couldn't find any useful clues.

Bi Chengyuan said: "Let's rest for a while."

Xie Jibai nodded.

Tang Xin didn't come back during lunch, so Xie Jibai had to settle it in the cafeteria.To be honest, the food in the cafeteria was not as delicious as Tang Xin's cooking, and there were a lot of shredded carrots and shredded red peppers, which Xie Jibai didn't eat at all.

Xie Jibai had no appetite in the first place, and when he saw a pile of little red silk, he didn't even want to eat.

Halfway through the meal, Chen Wanting called and called Xie Jibai's cell phone.

Chen Wanting didn't know about the case yet, so he just asked Xie Jibai and Tang Xin if they would come back for lunch, saying that Su Banyu had done a lot, so they could come here for lunch.

Xie Jibai told Chen Wanting that he was at the police station, and Chen Wanting was taken aback, only then did he know that there was another case.

After lunch, Xie Jibai and Bi Chengyuan started working again.The police detective who went to Chang Kunbing's house also came back and reported the situation to Bi Chengyuan.

There is almost no one in Chang's old family. He was married in his early years, but his wife died and he had no children, so he lived alone.There are indeed some relatives, but the relatives have stopped moving around for a long time, and they are not in City C.

Chang Lao lives alone, not far from the library, in a very old slab building, in a single room in the basement.

They went to Chang Lao's home and asked Chang Lao's neighbors.

Neighbors heard that Chang Lao committed suicide, and they were also very strange, and they all said it was unbelievable.Chang Lao has lived here for decades, and he is familiar with the neighbors, and they all say that he is a very nice person.

Neighbors said that Chang Lao had no children, so no one came to see him during the holidays, and the door of his house was always very quiet.

Someone said that Chang Lao came back yesterday afternoon, around five o'clock in the afternoon.

The aunt of the neighbor's house picked up the children who had finished their extra-curricular classes and went home. When she entered the building, she happened to see a courier boy who had gone to the basement and was knocking on the door of Chang Lao's house.

When they went up to the second floor, they heard the voice of the courier brother, it should be Chang Lao who came to open the door.

Xie Jibai said: "Old Chang returned home from the library yesterday afternoon and picked up a courier?"

Bi Chengyuan said: "I probably didn't pick up a courier."

Xie Jibai said, "That's it?"

Bi Chengyuan said: "It may be a courier."

The police detective who came back to report said that Mr. Chang should be delivering the package at that time. The neighbor heard the courier brother ask Mr. Chang if the courier to be sent was from this city.

Xie Jibai said, "We should investigate that courier."

Bi Chengyuan nodded.

Bi Chengyuan asked people to check the courier that was sent, and asked the library staff by the way.

The staff said that Chang Lao did leave for a while yesterday afternoon, and he didn't know where he went.But Mr. Chang has already retired and came back to help, so his working hours are very free, and people generally don't ask about it, so they don't take it seriously.

It was easier to check the courier, and it was quickly found. Yesterday at around [-] o'clock in the afternoon, Mr. Chang was indeed at home and sent a courier from the same city.

The courier boy described the appearance of the old man who sent the mail, and he was almost exactly the same as Chang Lao, without much difference.

The courier brother checked the courier for them, because it is in the same city, so it has been shown that the receipt has been successful.

The courier has no phone number, only the address, but luckily it was delivered successfully, otherwise the package would have been returned.

Bi Chengyuan continued to ask the courier boy, what is the recipient's address.

At this moment, Xie Ji Bai's cell phone rang suddenly, it was Chen Wanting calling.

Xie Jibai took the phone to the side to answer the call, Chen Wanting said: "Xiaobai, I have a courier for you."

"Express delivery?" Xie Jibai was taken aback, because they were still investigating the express delivery just now, so when he heard these two words, he was a little sensitive.

Chen Wanting said: "Yes, my mother just called me and said that I heard someone knocking on the door outside, and when I opened the door, it was a courier boy, but he was not knocking on their door, but knocking on the next door. My mother asked him who he was looking for, and he said there was a courier from Mr. Xie."

Xie Ji Bai was even more stunned.

Xie Jibai used to live next door to Chen Wanting's house, they were neighbors.However, because of the death of his parents, he had already moved out, and the new resident who moved in was not named Xie.

Chen Wanting said: "My mother saw the name, and it turned out to be a courier sent to your father, so she signed for it. She called me just now and asked me to go over there."

Xie Ji Bai was even more confused, his father had passed away a long time ago, so how could someone suddenly send a courier over after so many years.

Xie Jibai hung up the phone, Bi Chengyuan also inquired about it, and said, "Here is the recipient's address."

Xie Jibai took the paper and looked at it, startled.

Could it be that the courier that Chen Wanting mentioned just now was sent by Chang Kunbing?

The recipient's address was the place where Xie Jibai lived before, and the recipient only wrote Mr. Xie, without a phone number.