Xu Sa, who had been silent, glanced at Su Tong meaningfully, this was the first time that this woman had praised Wen Yan in front of him.

"Oh, when is this day going to be the end, my old bones will not be able to move." Zheng Lao's voice came from afar.

Zheng Lao was dressed in an old man's shirt and held a thermos cup in his hand, not like a forensic doctor who came to the scene, but a little like an uncle who went out for a walk.

His two apprentices carried the toolbox, one left and one right, as if they were the left and right protectors.

"Team Xu, I heard that you were honorably injured last night, why are you still on the scene today." As soon as Zheng Lao saw Xu Sa, he glanced at his arm, "Young man, don't treat your body badly, if something happens to you, your Sun Bureau will be distressed to death." ”

"Old Zheng, you're kidding me again." Xu Sa nodded lightly at Zheng Lao, said hello, and then turned sideways and let out the corpses placed side by side, "Today's workload may be a bit large, all of these deceased have strangulation marks on their necks, and their hearts have been gouged out." ”

Zheng Lao touched his beard, "I know, I will give you the autopsy report as soon as possible." ”

"Trouble Elder Zheng." Xu Sa respectfully thanked Elder Zheng.

Zheng Lao is a veteran forensic doctor in the city bureau, and he has reached the age of retirement in the millennium, but there is a shortage of manpower in the city bureau, and Sun Ju personally invited people back.

So everyone in the bureau has a lot of respect for Zheng Lao.

"Wen Yan, you can accompany me to take a look around." Su Qing couldn't hold back and looked around, "Maybe there are other eyewitnesses to the case that have been missed." ”

Wen Yan hesitated slightly, subconsciously looked at Su Tong, and without waiting for him to speak, Su Qing pulled him straight to the side and walked away.

"Well, let's take a look around and see if there are any clues missing." Xu Sa naturally took Su Tong's hand.

Su Tong was stunned, looked back at Xu Sa, and saw a vague smile on the corner of Xu Sa's mouth, as if he didn't notice anything wrong with his movements.

"Do you know, I'd love to shake your hand off right now." Su Tong endured it, but he couldn't help but speak.

Xu Sa looked around and replied indifferently, "But you didn't do it, did you?" ”

Su Tong gave him a big roll of his eyes mercilessly, "This time it's for the sake of you being injured, not for example!" ”

What Xu Sa paid attention to, she knew very well in her heart, but she also ate Xu Sa's set.

No way, the scene of Xu Sa being injured in front of her last night has been lingering in her mind.

Although she kept saying that Xu Sa crawled out of the hospital without permission, she was glad to see Xu Sa appear in front of her intact in her heart.

The park is small, and the lake where the body was found occupies nearly a third of the park's size.

Xu Sa led Su Tong around the lake and stood still on the opposite bank where the body was found.

"You say, this lake is so big, why would the murderer throw the body on the other side." Xu Sa groaned and said his doubts, "Also, Wen Yan said that the murderer can't wait for people to discover his 'work', since this is the case, why should the murderer bury the body in one more move." ”

"Burying seven bodies at once is not an easy task. And the project is large, and the chance of being seen by others is also very high. ”

"Unless...... Su Tong's heart moved, and then Xu Sa's words continued, "Unless he is completely sure, no one can see him." ”

Xu Sa nodded thoughtfully, "That's the truth, but he is not an invisible person, how can others not see him?" ”

"I didn't mean that." Su Tong let go of his hand and pointed to the opposite side, "When some people are looking for something, they obviously put it in front of their eyes, but they can't find it, do you know what the reason is?" ”

"That's because of the human brain." Without waiting for Xu Sa to answer, Su Tong continued, "Sometimes the human eye will ignore some things that are naturally squatting in a specific environment. Then your brain will tell you that the thing is missing! ”

Xu Sa frowned, and tried hard to digest Su Tong's words, "You mean, the murderer is likely to disguise himself as a person with a certain identity who has appeared in the park for a long time, so that he can be invisible under people's noses?" ”

"yes, that's what I meant!" Su Tong blinked excitedly, "We can check the staff who haunted the park last night to see if any of them could be disguised!" ”

Looking at Su Tong's excited appearance, a smile flashed in Xu Sa's eyes, I am afraid that only he can understand what she said just now.

"What about what the murderer wants people to find out? At first glance, this sounds like a fine problem, but when you think about it, I think it's a bit contradictory. Xu Sa's idea is very simple, the murderer's place of throwing the body and the disposal of the corpse show that the murderer is full of "desire to perform".

But the murderer, who was full of "desire to perform", buried the body, although it was very shallow.

"That's the contradiction." Su Tong explained seriously, "Everything in the world is a contradictory and unified existence, and people's personalities are the same. Human personalities are diverse and very complex, but they are often formed by two main contradictory personalities. And judging from the fact that this murderer not only hopes that the body will be found, but is also afraid of being found directly, this person is usually an extremely depressed existence in life. ”

"In ordinary life, he may seem very honest and honest, and he is a good neighbor and colleague praised by those around him. But in fact, he has his own hidden other side of his personality, which is completely opposite to his honest and honest, and even very flamboyant. However, for some reason, he suppressed that side of his personality for a long time, so that in the process of throwing the corpse, it affected his decision. ”

"Understood." Xu Sa snapped his fingers, "I'll immediately ask He Xingchen to make a list of public officials in the park last night, and then go home to the ones you just said." ”

"Wait!" Su Tong was surprised in his heart, "What I said just now is just to explain to you the possibility of the murderer's contradictory measures, and cannot be used as the direction of investigation." If you need a psychological profile, I need to collect more information before I can give it to you! ”

"But I think you have a lot of sense." Xu Sa raised his eyebrows, "Have confidence in yourself, I know your abilities very well, what you just said is already eight or nine." ”

As he spoke, the phone in his hand had been connected, and He Xingchen's somewhat nervous voice came.

Xu Sa winked at Su Tong, signaling her to rest assured, and then said to He Xingchen, "I still have a piece of data that you need to cross-compare......