Gazing at Jiang An and Wu You's inscrutable expressions, Zhang Yean felt an intense urgency inside.
"Brother, can you not speak in riddles?"
Even Captain Li Jian looked at the two of them with bewilderment.
After all, only those who have studied medicine would understand the conversation just now.
Jiang An responded, saying, "Senior sister, what I mean is, when the deceased was found hanging from the willow tree, their arms hanging down, in the struggle, they likely grabbed the assailant's leg."
"During this season, we wear less clothing, so I deduce that it's likely the assailant's leg was scratched."
Zhang Yean suddenly saw the light.
"You mean to look for evidence from the bleeding on the assailant's leg?"
Jiang An replied, "Not to find evidence from bloodstains."
"A week has passed since then, any bloodstain would have been cleaned by now."
"Not bloodstains? Aren't bloodstains the most critical evidence in investigations?"
Zhang Yean felt a bit helpless, wondering how this highly educated police academy student seemed to encounter difficulties outside of the ivory tower.
Jiang An said, "Bloodstains are indeed crucial, that's for sure."
"We once had a book called 'Bloodstain Pattern Analysis,' but in this case, there are no bloodstains left."
"This time, we approach it from the angle of skin recovery."
Suddenly, Jiang An seemed to Zhang Yean like a medical expert.
To be precise, he was just a white coat short of being akin to a white-clothed angel in the hospital.
"If the assailant's leg skin has scars, by now the scabs would have fallen off."
"Just like when we had wounds as children, when the scab falls off, the underlying skin appears faintly white."
"Got it!"
"Now I understand!"
Even Captain Li Jian, who knew nothing about medicine, understood at this point.
Then, Captain Li Jian said, "I didn't expect that research in dermatology could also apply to criminal investigations."
Zhang Yean said, "I suddenly feel that forensic experts are even more knowledgeable than doctors."
Wu You proudly said, "Of course!"
"In Dragon Country, forensic science training involves first learning medicine, then forensic medicine."
"Clinical medicine is the basis for forensic medicine."
Zhang Yean laughed and said, "Does this mean if we ever have a headache or cold, we can skip registration and go straight to see a senior?"
Jiang An's mouth twitched.
"That would be illegal practice, forensic scientists don't have medical licenses."
"How come? They study medicine too?"
Jiang An said, "Forensics only grants a forensic specialist certificate, specifically for examining bodies."
He paused, then said, "Actually working as a forensic pathologist is quite good, no medical malpractice, no risk of being attacked by patients."
10 minutes later, inside the school's administrative office.
Captain Li Jian held a list of exam scores of high school freshmen.
According to the analysis just now, the assailant of the deceased, Li Rui, is likely a freshman at the school.
Captain Li Jian asked, "Jiang An, what do you think is the next step in the investigation?"
Jiang An looked up and glanced at Zhang Yean.
"Senior sister, we might need your help this time."
"Me?"
"I'm not a forensic scientist?"
Having heard their discussion, Zhang Yean suddenly felt a significant difference between herself and a forensic scientist.
"It doesn't matter! As long as you're a woman."
"Huh?"
Before Zhang Yean could react, Jiang An continued, "We suspect the assailant might be a female student, we'll later inspect the girls' thighs."
"It's certainly inappropriate for me to do it."
Zhang Yean nodded solemnly, as if facing an important and challenging task.
Captain Li Jian said, "Besides you, I'll also ask the school to arrange for two female teachers to assist you."
"Okay!"
Finally, Jiang An glanced at the exam score list and said, "Captain, I suggest starting with examinations of female students ranked in the last 20 in their grade."
Captain Li Jian nodded.
Evidently, the principal placed significant importance on this case, and upon receiving Captain Li Jian's notice, immediately arranged for specific teachers to assist and cooperate.
10 minutes later, 20 female students walked into the administrative office's meeting room.
It turned out they weren't overly concerned about studying, but their attire was quite fashionable.
Some students had dyed yellow hair, others wore short skirts, and some wore revealing low-rise pants...
Zhang Yean's heart rate quickened slightly.
Though she had been working for three years, she hadn't independently solved a case.
Often, she was more like a novice following her mentor around.
The sudden role of a police officer felt like a massive challenge to her.
Taking a deep breath, Zhang Yean gave brief instructions to the two young female teachers beside her.
Then, she turned to face the 20 female students before her.
"I am a police officer from the criminal investigation team, investigating a case, and I need your cooperation."
"Since we're all women here, please lift your dresses and remove your jeans."
Upon hearing this, many girls appeared apprehensive.
They exchanged glances, and none of them moved.
Zhang Yean's expression changed as she said, "What's wrong? Feeling guilty?"
"If you don't cooperate, it means you have a guilty conscience, which means you're a suspect."
"If you don't cooperate here, I will have no choice but to take you to the police station to ensure full cooperation."
As soon as she finished speaking, the girl closest to her began to comply voluntarily.
Compared to going to the station, doing this here was much more dignified.
With the first one setting an example, followed the second, the third, the fourth...
2 minutes later, the twenty female students' pale legs were exposed to Zhang Yean's view.
Immediately, following Jiang An's method, she picked up a strong flashlight, squatted down, and examined them one by one.
From the front side to the back, from left to right, not missing a single spot.
Be meticulous!
Even more meticulous!
Throughout her observation, Zhang Yean repeatedly reminded herself.
This was her first independent operation in three years.
And Jiang An's first task for her.
She must complete it excellently.
Sure enough, as Jiang An had said, on the calves of the 5th, 9th, and 15th girls, strips of white skin changes could be seen.
In some places, spots of scab could still be seen.
This was clearly the result of scabs having just fallen off after a wound had healed.
If only one girl's calf had scabs that fell off, it might be explained by other reasons, but three girls having scabs fall off their calves?
That couldn't be a coincidence.
Importantly, the positions of the scabs on these three girls' calves were at roughly the same height.
30 minutes later, Zhang Yean said, "Please, students number 5, 9, and 15 in this row stay behind, the rest may leave."
Instantly, an expression of terror appeared on the faces of the three girls.