"Maybe what you're seeing is just an illusion." Cheng Nan's eyes narrowed slightly, staring at the road ahead.

"Vision?" Everyone stared at Seongnam curiously, not knowing what he meant by the illusion.

"There are some drugs in this world that can make people hallucinate, affect the other party's nerves, and cause her to see the things she is most afraid of, so just now Officer Zhang said that he sees us as zombies, which may have something to do with us coming to the grave, maybe Officer Zhang has this subconscious in his heart after arriving here, thinking that he will encounter zombies, so after being stimulated by the drug, he produces illusions and sees us as zombies." Seongnam analyzed.

"I also know that this drug can produce nerve changes, but when did Officer Zhang take this drug by mistake." Ah Yi wondered.

"If my guess is correct, it shouldn't be that Officer Zhang took any drugs." Seongnam said with a serious expression.

"Ah, what's that?" Ah Yi wondered.

"Did you smell anything strange?" Seongnam asked rhetorically.

"Ah, there is. Do you mean.... Ah Yi was first startled and then shook his head and said, "Probably not, we all smell this smell, what is that only Officer Zhang is crazy?" If it's really something wrong with that taste, how can we have nothing to do with it? ”

"You're right, but you probably don't know that this is the second time Officer Zhang has gone berserk, the last time was in the cemetery, and did you notice what Officer Zhang did when we asked about that strange smell?" Seongnam asked one after another.

"Hey, what you said about Officer Zhang suddenly fell into madness after answering a phone call at that time?" Xu Xin on the side pondered.

"Yes." Saying that, Chengnan turned his head and asked Zhang Meidao: "Officer Zhang, do you remember what happened before you fell into madness in the cemetery last time?" ”

"This... I remember that I didn't know anything after I was hit by your flashlight, and you told me what happened next. Zhang Mei thought for a while.

"Ahh I know why? Xu Xin, who was on the side, suddenly clapped his hands and shouted in surprise.

"Oh? What is it? Chengnan didn't expect Xu Xin to be surprised.

"You see just now Officer Zhang said that she was stimulated by the light of your flashlight when she lost consciousness in the cemetery before, so just now Officer Zhang only turned on the mobile phone once when she lost consciousness, and the screen of the mobile phone may not be bright in a place where there is light, but you look here, there is no sunlight under the tomb here, although there is some fire on the wall, but it is still very dim, so the screen of the mobile phone is still very dazzling under this condition." Xu Xin analyzed.