The big waterwheel, the bar street, the alley where Xiao Su was killed.

Xu Jingnan had been here for a whole day, he didn't seem to think about anything, he just kept walking and walking, walking from one end to another, and from that end back to this end.

He really didn't think about anything, he should have thought about it a long time ago, what he lacked now was inspiration, and too preconceived judgments would affect the appearance of inspiration.

Xu Jingnan exercised by the way, since he became a forensic doctor, he rarely had the opportunity to exercise, he was too busy with work, many people would definitely ask, no matter how busy he is, he has time to run or something, right?

Yes, the time can still be squeezed out for half an hour and an hour, but it's irregular!

An unplanned life is full of too many variables, so he took advantage of this opportunity to simply go out for a run, so that his mind was obviously much more active.

Inspiration has not come for a long time, and he is not in a hurry.

The path was deliberately chosen not to be single, running along the main street all the way to the northeast, then turning into any alley according to the mood, going around and running back in the opposite direction, occasionally stopping at the door of a certain bar, he went to the toilet more than a dozen times a day, anyway, everything listened to the natural reaction of the body.

He intends to keep it that way until two or three in the morning, completing a cycle of nearly 24 hours.

This may also be the trajectory of Xiao Su, some tourists, men and women who eat sex, prodigal sons in love, band singers, and even outlaws.

At the beginning of the lanterns, Xu Jingnan had passed by the Promise Bar for the twelfth time, which was where he focused his attention, and as for what to focus on, he didn't know, and there was no need to figure it out.

Everything goes with the feeling!

He wears a pair of sports headphones and plays two songs on a loop: "Follow Your Feelings" and "The Rest of My Life".

Xu Jingnan was wearing sportswear, wearing headphones, bending over with his hands on his knees, panting slightly, he stood not too far from the Promise Bar, observing the people coming in and out, this angle was exactly the direction of Xiao Su's gaze at that time—why did he look here? Is there any special significance?

Maybe nothing, just a direction chosen by chance before dying.

It's been a long time since he's done something so meaningless, or more precisely, it's been a long time since he's been so far away from science, from common sense, from common sense, and doing such a boring thing.

Who let the fourth brother arrange such a task? He laughed at himself in his heart, this is contrary to the beginning of the forensic profession, and he actually came to engage in hardcore reasoning again.

The bureau's unwritten rules say that forensic doctors do not have to participate in criminal investigations, and at this time, he is more like a little policeman who doesn't know the height of the sky, and more like a teenager who still has longings and fantasies.

I have to say that Xu Jingnan likes this feeling, hey, long time no see, long time goodbye!

Since he studied the profession and gradually deepened, he has imperceptibly repelled reasoning. Maybe it's an occupational disease, or maybe it's a recognition of the truth - the corpse will tell you the truth, and it will be clear that you will never lie, and reasoning is really useless.

How many people in the police station have solved the case by reasoning? Conducting surveillance, conducting visits, squatting, recording confessions, and autopsies, it is basically clear what they can know, and reasoning that they can't know is in vain.

What era is it now, and he still engages in reasoning? He thinks it's ridiculous.

Over time, the only discomfort may be that the brain is a little dull, or a little numb.

He gasped and thought about these things.

The brain cells seem to be slowly reviving unconsciously, and the eyes are beginning to glow.

--------------------------------------------------------------------

My stomach gurgled.

Xu Jingnan knew that it was not that he was hungry, but that he had an upset stomach. If you don't do high-intensity exercise for a long time, the first discomfort will be the most fragile abdomen.

He smiled bitterly, turned around and walked towards the small alley not far away, where there was a bathroom, when he walked into the alley, there were people in and out of the alley, and his steps were hurried, as if there was someone waiting for him somewhere, and he couldn't wait to solve the physiological problem, which was of course the temptation of a woman.

Xu Jingnan smiled secretly, isn't the most primitive desire in the world the toilet and the bar? This place meets all the needs of men and women, and the distance is just a short distance.

He squatted in a lattice, and somehow thought of such a simple and simple truth.

There are six squares here, and he has already taken turns squatting all over today.

If nothing else, I just want to do it, maybe I'm also amused by the landscape in the lattice.

There are a lot of numbers written on the walls on both sides of the lattice, almost all of them are 11 digits, and there are drawings and writing on the sides, which are nothing more than the shapes of some human organs, or: same-sex, about? Long legs and big eyes, waiting for you. Mouth J, brother, come on.

The small paper advertisements are horizontal and vertical, a bit like a graffiti wall.

Xu Jingnan's eyes swept over these words, and he didn't know why he felt a little like laughing, as a forensic doctor who dissected the human body like a frog all day long, he didn't know what the attraction was.

About half an hour later, Xu Jingnan, who was distracted, remembered to get up, but when he stood up, there was a sudden dizziness in his head, and his steps stumbled a few times, and he subconsciously held on to the lattice cement wall, good guy, his legs were numb.

He was taken aback when he suddenly emptied, only to realize that a small piece of cement had fallen from his hands.

He smiled wryly: this quality.

The cement block, which was less than the size of a fist, fell on the flat ground that was also made of rough cement, and made a crisp sound, shattering into several small pieces, and the part of the impact was actually powdered.

This crisp sound suddenly plucked a certain nerve in Xu Jingnan.

He squatted down and picked up the cement block on the ground again, regardless of whether it was dirty or not, what he touched every day was not dirtier than this?

If someone sees what he's playing, they will think that the person has a brain disease or a psychological problem.

Xu Jingnan stroked the cement block in his hand as if no one was around, and pinched it hard, not feeling shaken at all, but why did it fall down just by touching it lightly?

Did it crack a long time ago? It just took a while for it to fall by chance?

Why doesn't it fall in a few other places, but this one drops?

There's no logic to this, and it's a bit too sensitive from a scientific point of view, and it's entirely possible that there are still a lot of loose parts in this bathroom, after all, it's an old building, and the four walls are covered with cobwebs, and the walls are cracked.

In view of this judgment, Xu Jingnan began a "search journey" in the toilet.

He wanted to prove that there were no cement blocks that could be dropped at his fingertips in other parts of the place, which was really a huge project, but Xu Jingnan did not give up on this idea.

He had a hunch that he was about to find a critical juncture!

During this period, three or two people had entered the toilet, just glancing at him, Xu Jingnan stopped searching and quietly waited for these people to leave, these people obviously didn't know, and left in a hurry.

There were only a few squatting tuba, which made Xu Jingnan a little impatient, but he still held back.

At this time, he actually found another pit and squatted up, and after a few times, even he couldn't help laughing, what is this called? But since he had made up his mind, he didn't care about it.

After going back and forth a few times, Xu Jingnan's conclusion was about to come out: there should only be such a special thing in the entire toilet, and he happened to bump into it.

As we all know, don't look at some ordinary toilets, just use cement and sand to use it simply, and it doesn't require too many processes and modifications, but this kind of toilet is the most durable and strong, but those with beautiful tiles, putty and fine cement on the surface, are easy to fall.

In other words, the only explanation for the fall of this piece of cement is that it has been hit by an external force!

That's right, it's an impact, otherwise it would not have been possible to cause damage to the internal structure.

It's amazing, it's the work of time, and it reveals a special flaw.

Xu Jingnan stood for a long time in the position where he was squatting just now and now standing, his gaze started from the damaged part, slowly lifted up, and soon found an invisible trajectory, this curved track, along the damaged part, obliquely upwards about 60 degrees, connected to the ventilation of the entire toilet - a 50cm square window.