"I have an impression of this." Xu Tian said.

"Aren't you ahead of the curve? How do you get impressed? Teacher Jin asked.

"Because Sitong and I also slowed down later, I remember that the first person who passed by me was Dr. Lin, and she was in a hurry." Xu Tian said.

"That's because I want to go down as quickly as possible, the stairs are too long, and I'm a little dizzy." Dr. Lim said.

"I can prove that she does have a slight dizziness, but not so much that she doesn't dare to look down from the height." Teacher Jin said.

"The second one who walked past me was Hongmei, who deliberately bumped into me when he walked up to me." Xu Tian said.

Hongmei glanced at Xu Tian angrily and didn't say anything.

"The next person to walk past me was Fang Lu, and she also greeted me and Sitong." Xu Tian said.

"Because you were walking too slowly, and the people in front of me were going down very fast, and I felt that the people behind me were also squeezing down, so I quickened my pace." Fang Lu said.

"The person who followed Fang Lu next to him was Huang Quan, I remember correctly, right?" Xu Tian looked at Huang Quan and said.

"Because I want to follow my mother quickly, I am afraid that someone will harm my mother." Huang Quan said.

"At that time, when we were about to go downstairs, we had already tied the two bail prisoners to the staircase, and if Zong Yu took out the orange from his pocket before going downstairs, then the two bail prisoners could also take advantage of the chaos to stuff the needle into Zong Yu's pocket, when the two bail prisoners were handcuffed by Li Zhitong One hand, and their other hand was free to move. When we all walked up the stairs, I felt that it was unsafe, so I said casually, and when Li Zhitong heard me say that it was not safe, she went upstairs again and tied up the two bail prisoners, so in the end Li Zhitong walked down the stairs. Xu Tian said.

"Did Li Zhitong surpass Yanzi and Zongyu later?" Teacher Jin asked.

"No, I remember that Yanzi and Zong Yu went downstairs first, and after about two minutes, Li Zhitong walked down the stairs." Xu Tian said.

"But Li Zhitong has returned upstairs, so it is possible that she casually stuffed the needle into Zong Yu's pocket when she returned upstairs." Teacher Jin said.

"That's roughly the case, but I think Yanzi is also suspicious, after all, Yanzi has always been by Zongyu's side." Xu Tian said.

At this time, Yanzi was unhappy, and when he heard Xu Tian pointing the finger at him, Yanzi hurriedly replied to Xu Tian.

"If you say I'm suspicious, then I think you and your female companion are also suspicious, I remember very clearly, originally Zong Yu and I were in the front before going downstairs, but in front of the stairs upstairs, Zong Yu took out oranges, and when Zong Yu asked me if I would eat oranges, you and your female companion walked past Zong Yu one after another." Swallow said.

"You're right, I remember this incident, and I admit that Sitong and I are also suspicious." Xu Tian said.

"In this way, except for Kang Yuliang and me, it is possible that none of you will put the needle into Zong Yu's pocket, but it is also possible that Zong Yu is a thief shouting to catch the thief, so now except for me and Kang Yuliang, everyone else here may be the murderer." Teacher Jin said.

"I'm a little upset that I've become a suspect myself, but I have to admit that this time I've been involved by the murderer." Xu Tian said very unhappily.

"I can be sure that there was no pinhole in the neck of the deceased when he was in the attic, so now there is a new suspicion, if the cause of death of the deceased was the injection of the poison in the neck by a needle, then when was he injected with the toxin? According to the clues you gave just now, it can be determined that the deceased was injected with toxin when he was upstairs, but when I was in the attic with the deceased, I didn't see a pinhole in his neck, so the deceased should have been injected with toxin after coming out of the attic, but at that time you had already gone downstairs, even if the deceased had contact with the two bail prisoners and Kang Yuliang at that time, then if someone between the three of them was a murderer, it would be impossible to stuff the poisonous needle into Zong Yu's pocket. Because at that time, Zong Yu had already walked downstairs. Teacher Jin said.

"It is also possible that the murderer had two needles, and the needle found in Zong Yu's pocket may have been deliberately framed by the murderer Zong Yu, but in fact, the murderer also had a needle." Xu Tian said.

"If that's the case, then the killer is basically locked on two bail inmates." Teacher Jin said.

"That's right! When Zong Yu went downstairs, Kang Yuliang was still in the attic and talked to Teacher Jin, so Kang Yuliang's suspicion was ruled out, and the only ones left were the two bail prisoners who were handheld by Li Zhitong on the handrail of the stairs at that time, and one of the two of them stuffed a syringe with toxin residue into Zong Yu's pocket when Zong Yu went downstairs, and then waited for the deceased to come out of the attic to find an opportunity to use the second syringe to inject the toxin into the neck of the deceased. Xu Tian said.

"It's very likely, I heard Kang Yuliang and the deceased arguing with two bail prisoners in the attic." Teacher Jin said.

"It's the two of you!" Kang Yuliang walked to the two bail prisoners who were sitting at the top of the stairs and said.

"No...... Not me! The thin bail prisoner looked at the big bail prisoner with frightened eyes and said nervously.

"That's you?" Kang Yuliang approached the big man on bail and said.

"Do you think there's a chance I'm going to do something to that guy?" The big bail prisoner said calmly.

"This kind of killing skill is not that the murderer is stronger than the deceased, the killing skill is very important, just like a sports competition, people with strong physique will not necessarily win the championship, sometimes it has to be skillful, otherwise the existence of the coach is meaningless." Xu Tian said.

"I didn't kill anyone." The big bail prisoner said calmly.

"Shall I do a body search, then?" Teacher Jin said.

"Whatever you want, I don't have the strength to resist now anyway, it's up to you to kill or chop up." The big bail prisoner said.

Mr. Jin quickly conducted a comprehensive search of the two bail inmates, and did not find a second needle on their bodies, but the suspicion of the two of them was still not ruled out, because they had the opportunity to dispose of the second needle.

"In the end, the murderers have not been directly charged, and now the most suspicious are these two bail prisoners, and I suggest that they be controlled." Xu Tian said.

Mr. Jin took out two pairs of handcuffs and handcuffed the two bail prisoners on the handrail of the stairs, and the matter finally calmed down, but at this time, the real murderer was still peeping at everyone in the crowd, and the real murderer was already happy in his heart.