The family members of the victims were a little emotional, and went out accompanied by Zhong Yucheng, and everyone was silent for a while, and they couldn't figure out why a girl who looked good in the eyes of her family could be like this.

"Captain Cheng, can I ask these three people some questions?" Jiang Chengyu made a request after Cheng Fangming stopped asking.

Cheng Fangming was a little surprised when he heard it, could it be that this young man found something suspicious? He nodded to Jiang Chengyu and signaled that he could.

Jiang Chengyu looked at the three of them, and the three of them also looked at him, curious about what questions he wanted to ask.

"When you came here today, were you all dressed like this? Do you have anything with you. Jiang Chengyu asked.

"My school is not far from here, and after my last class, I came here with my school bag, which was full of books and a power bank that I carried with me, and I could go shopping after seeing the doctor. When I went back to the dormitory, I didn't bring my schoolbag to the dormitory. Zhang Fan had questions about the staff in the hospital just now, and Jiang Chengyu also looked at him and asked, so he was the first to answer.

Jiang Chengyu nodded at him, then turned his head to look at Li Shuang.

"I just came out of the studio, and I came here, and I didn't change what I was wearing, and I still have my wallet and mobile phone with me." Li Shuang said he was wearing a pair of slim-fitting jeans and a black printed T-shirt.

"I came here when I got off work, I was dressed in a suit the same as now, I was holding a hand-wrapped ID phone, I didn't go home when I went out of the hospital, the key was left at the company and I went back to get it, and I looked at the documents in the office until I came here just now." Chen Qi raised the small handbag in his hand and opened it for everyone to see, there were only some ID cards and change inside.

Jiang Chengyu finished asking, now that he knew who the prisoner was, he was short of evidence.

There were no fingerprints left at the scene and no evidence clearly pointing to the murderer, if this case was not discovered by Jiang Chengyu and the others, it would not be discovered until at least tomorrow morning.

The murderer didn't lock the door from the inside and then close it, does it make people discover the situation here as soon as possible, or do they let people ignore the situation here? Judging from what has been learned, it should be an approach that makes people ignore the situation here.

The oxygen cylinders are all open, under normal circumstances, ten hours later, the ten liters of oxygen can be exhausted, and finally Xiao Wu, who woke up the next day, found that the air conditioner has been running, which can also ensure that the indoor temperature is not high, Xiao Wu will not wake up early because of these factors.

If the case is not discovered until tomorrow morning, then Xiao Wu will become the first suspect, due to the oxygen concentration and the operation of the air conditioner, the normal change of the body is disturbed, and the inference of the time of death will be less accurate.

However, this still does not guarantee that the murderer can be completely cleared of suspicion. Judging from the fact that there are no other items on the deceased's body, only a medical card, there will be evidence directly pointing to the murderer in those objects, and what the murderer needs is to destroy the evidence completely tonight.

Jiang Chengyu looked at the three of them, and the three of them didn't show any unusual expressions. But the more this happens, it means that the murderer is calm, knows the scene environment very well, and thinks that the police can't get evidence against him from here alone.

However, Jiang Chengyu is sure that the evidence has not been destroyed, and some questions are now raised to prevent the evidence from being destroyed after one night.

If he didn't look at Xiao Wu's bloody clothes at this time, Jiang Chengyu felt that Xiao Wu was a little different from ordinary people. Specifically, it felt like what he had experienced last night. Then the time of being fed sedatives and sleeping pills can be postponed, because in that state, the probability of being woken up is really small.

However, hearing Jiang Chengyu's questions, Xiao Wu thought a little, Zhao Shiming was a little confused, and the experienced Cheng Fangming also thought of some key questions.

"Does that have anything to do with what they're carrying?" Zhao Shiming asked at this time.

Jiang Chengyu smiled, "Of course it matters, it's very simple." ”

Then he said directly to Zhang Fan, "Zhang Fan, can you find your backpack now?" ”

"Are you suspecting that I killed someone? I don't have enough time to commit the crime, you can check this out on video. Zhang Fan said calmly.

"No, we won't have surveillance video of the deceased after the death of the deceased today." Jiang Chengyu said.

At this time, a police officer also came in, "Deputy captain, I didn't find the surveillance video this afternoon." ”

"How so?" Xiao Wu asked beside him.

"Remember when we went upstairs, there was no light, not even the emergency light?" Jiang Chengyu asked Zhao Shiming.

"Why?" Zhao Shiming said.

"Because the power valve in the corridor was turned off, the emergency lights will be completely out of power after about two hours of power outage." Jiang Chengyu explained.

"Then why did the murderer do this?" Zhao Shiming continued to ask.

"Because the murderer knows that there is video surveillance in the corridor, if he doesn't have time to solve this surveillance after committing the crime, he will expose himself. The electricity in the corridor was cut off. ”

"Well, when we came just now, the lights in the hallway weren't turned on." Cheng Fangming said.

But in this case, the murderer is still not at ease, because the power supply of the monitoring line may not be the same as other power supplies, so he also went to the monitoring room once. Here I would like to ask, what are your parents? Jiang Chengyu said here and asked Zhang Fan a question.

Zhang Fan didn't show anything wrong at this time, "Are these things related to the case, the main evidence has not been found, right?" ”

"Of course, it's the first time I've come to this hospital, and I won't know exactly where the main switch of the hospital is, in fact, the prisoners are also a little redundant. Dean, there is a question, is the monitoring room of the hospital on duty? Jiang Chengyu asked the director of the hospital at this time.

"This is no one on duty, the monitoring room is on the very edge of the fifth floor, and someone will open the door every morning to check, and at other times you can't enter without a key." Yan Yuqing said.

"Your parents, one of them, should be the doctors at this hospital, right? If you don't admit this now, it will be found out after a detailed police investigation. Jiang Chengyu said.

"Yes and what? My dad is indeed a doctor at this hospital, but that doesn't say anything. If you suspect me, show evidence that you suspect me. Zhang Fan said.

Yan Yuqing and Xiao Wu were thinking about which doctor surnamed Zhang was in the hospital. After thinking about it for a while, and looking at Zhang Fan's age, it seems that he has locked in such a person.

"Are you Zhang Xuanfeng's son?" Yan Yuqing said suspiciously, he still remembered this doctor, he was an excellent internist, and he was also praised by patients for a while.

"Well, yes, Dean, I didn't expect you to remember my father." Zhang Fan said with some sarcasm.

At this time, a lonely expression appeared on Yan Yuqing's face, "Of course, he was the most optimistic person for me when he was alive, but I didn't expect that he would be gone in such a short period of time, this is a good age for his medical career." ”