Zhou Ning nodded, handing over the fingerprint comparison report to Xu Dayuan, and then picked up the camera.
"This is the result of the fingerprint comparison. The Volkswagen CC's interior has been meticulously cleaned, leaving only traces of fingerprints with glove lines. However, on the Nissan, many fingerprints were found, including those of the ex-boyfriend Wang Fuhao's fingerprints and palm prints, proving that Wang Fuhao's claim of a car switch race is true.
As for the Volkswagen CC, we found traces of replacement on the windshield, bumper, headlights, and tires, although the killer wiped away these evidences.
But the reaction to Luminol reagent on the hood is positive, and the pattern matches exactly to that of the bloodstain between the victim's ribs. Bloodstains have been found on the wiper cover, which Zhao Xinli has already sent for testing—results are expected in three hours.
Even though the results aren't out yet, I'm ninety percent sure that it was Yang Yufei driving the Volkswagen CC who hit the victim, Su Manli. As for the one who stabbed Su Manli, it's up to Xu Da to confirm that.
However, it's undeniable that, in the early morning with poor visibility, if the car speed exceeded 150 miles at the bridge exit and a person appeared, perhaps he didn't see clearly whether it was a person or an animal that was hit."
Xu Dayuan threw down his hat, slapping Zhou Ning on the shoulder with his palm while his bloodshot eyes stared at him.
"Doctor Zhou, you are my lucky charm. This evidence will nail them hard, and no one can turn it around. With this, I can question with confidence. Once the case is closed, I will commend you for your work.
By the way, that girl named Wenxuan is on her way here. You'll have to help check her bag later."
Zhou Ning nodded. As long as the case could be solved, how to interrogate was not his concern—after all, the case was clear-cut. However, he was still very interested in that girl, capable of acting tough and decisive, truly extraordinary.
"Did you check the girl's identity?"
Xu Dayuan laughed.
"You're quite curious, my boy. Let me tell you, her name is Sun Wenxuan, and she's also a student from the medical school, classmate of Su Manli. Her father is with Lihua Group.
As for the rest, we can guess most of it without even questioning—youthful jealousy and striving for status. She wanted to get close to Yang Yufei and felt Su Manli was in the way. Now, whether we can find the murder weapon so smoothly, that's another question."
Zhou Ning blinked, thinking of the small hole on the leather bag.
"Let's talk about it when she arrives. In front of the person she likes, a girl always wants to maintain her image."
Just then, the sound of car doors slamming came from outside the window. Looking downstairs, a few people were bringing Sun Wenxuan in, the girl crying weakly and saying:
"Why are you arresting me? What crime have I committed?"
With the fingerprint comparison report in hand, Xu Dayuan gestured toward the doorway and then left.
Zhou Ning exhaled deeply, noticing half a pack of Su cigarettes on Doctor Liu's desk. He took one out and lit it up. He wasn't much of a smoker and had started smoking just for fun, but at this moment, he really needed a bit of mental relaxation.
From yesterday morning until now, twenty-four hours had passed. It was truly an intense experience, arguably more thrilling than the previous twenty-six years of his life.
The noise downstairs gradually faded, and once the cigarette was finished, the door to the office opened again.
Mr. Liu poked his head in, waving to Zhou Ning.
"Doctor Zhou, Xu Da asked me to call you over to examine the suspect's personal belongings."
Zhou Ning nodded, put on his mask, gloves, and hat, and carrying an inspection box and camera, followed Mr. Liu down to the interrogation room on the first floor—it was his first time there, and there was a keypad lock on the door.
Upon opening the door, the blue padded wall covering and the conspicuous iron chair stood out.
Sun Wenxuan was sitting on the chair, her chest heaving, her face streaked with tear marks, but she said nothing.
Xu Da merely waved his hand, and Zhou Ning walked up to Xu Da's desk, where the leather bag was placed, its brand indicating it was expensive.
"Examine her leather bag, it's confirmed to be her personal item."
Zhou Ning knew this statement was intended for Sun Wenxuan to hear, however, Sun Wenxuan struggled to say,
"My bag is very expensive, don't you dare mess with it!"
The statement was feeble. Zhou Ning lifted the bag, looked at the small hole underneath, took an external photo first, then opened the bag. Inside was a black knit lining. Using a flashlight to illuminate it, he spotted a tear on the inside.
The area was clearly stiff; bloodstain was the obvious culprit for the hardening. Zhou Ning took another photo, then dumped out the contents of the bag and squeezed it from top to bottom, and a long, narrow trace became apparent at the bottom.
Zhou Ning paused, knowing by its shape it was the murder weapon. He opened the bag again and unzipped a side compartment, revealing a green plastic-handled flathead screwdriver.
The screwdriver was relatively clean, yet between the handle and the metal shaft, blood could be seen.
One had to wonder whether to praise Sun Wenxuan for her cleverness or foolishness—taking the murder weapon could've led the police into a deadlock, which was smart, but not disposing of it sooner was like waiting for the New Year?
Without being instructed, Mr. Liu had already approached with an evidence bag.
Zhou Ning didn't rush. He took fingerprints from the screwdriver handle, finding a very clear thumb print. He compared it to Sun Wenxuan's fingerprint sample on Xu Da's desk—there was no need for the comparison system, the fingerprints matched perfectly, not even a corner missing.
He then placed the screwdriver in the bag, swabbed the bag's outer hole for a sample, and then cut a piece of the inner knit lining from the corresponding area. After packaging all the evidence, he looked toward Xu Dayuan.
"Xu Da has finished taking samples. The fingerprints on the screwdriver are Sun Wenxuan's, but the speed of the blood test is very fast,"
"It can produce results in just three hours. However, the width and length of the murder weapon match the wound on Su Manli that caused her death."
Xu Dayuan nodded, his face showing appreciation. For Sun Wenxuan, that statement was the final straw that broke her—after all, all hope was gone.
Yang Lihua might be able to protect her son, but what was she in comparison?
She hadn't even had time to avoid suspicion, at least Sun Wenxuan's appearance meant her son was spared a murder charge.
Zhou Ning came out holding things, exhaled a breath, and looked at Liu Yong.
"You heard Xu Da's instructions, right? You're driving me to the county hospital?"
Liu Yong nodded.
"Let's go. I just got my driver's license, and there's a car in the team."
The two happily got into the car and sped to the county hospital. Zhao Xinli was already waiting at the entrance since Zhou Ning was not familiar with the procedures here and had already contacted him on the way.
Seeing Zhou Ning staggering out of the car, Zhao Xinli hurriedly approached, supported Zhou Ning's arm, and took the evidence box from him.
"What's wrong?"
Mr. Liu was embarrassed, scratching his head and sheepishly said,
"It's... it's just that Doctor Zhou is a bit carsick, it's nothing!"
Zhou Ning shook his head and patted his chest to ease some of the discomfort and stood up straight.
"Blacklist him, his driving is lethal. He goes fast then slow, like a bumper car, speeding up especially at intersections, swerving left and right—I'm someone who doesn't get seasick even in a gale force eight!"
Zhao Xinli grimaced with a smile and kicked Mr. Liu.
"You're tired of living, huh? Doctor Zhou is precious now. If your skills aren't up to scratch, go practice and don't embarrass yourself out here. You wait here, I'll go deliver the samples."
Mr. Liu quickly came over to support Zhou Ning, while Zhao Xinli scampered into the eastern side of the county hospital.
Zhou Ning drank some water and patted Mr. Liu.
"I'm fine now. You can go back first, Liu Yong. I'll wait for the results and then go back with Zhao Xinli."
Liu Yong didn't waste words and drove off as if fleeing.
Zhou Ning bought some fruits and a box of milk at the supermarket in front of the county hospital.
Zhao Xinli had also come out by then. Seeing what he was carrying, she naturally understood his intentions and glanced at her watch.
"The first batch of tests will be out soon. The technicians said the blood comparison will be fast. Let's go visit Doctor Liu."
The two of them went straight to orthopedics. Doctor Liu purposely put on a stern face, but his wife's demeanor was much better than the last time. Zhou Ning had always been very proper with social niceties.
Doctor Liu inquired about the progress of the case and was surprised that they had already gotten results so quickly. Although they still had to wait for the tests, the forensic doctor's work was basically done. You must understand, this was a homicide, and he was extremely excited.
It wasn't until Zhao Xinli received a call that the tests were in that they stood up to say goodbye, with Doctor Liu's wife personally escorting Zhou Ning and her out.
After getting the test results, the two quickly returned to the forensic office where Xu Dayuan was waiting at his desk.
On the way back, Zhou Ning had already looked at the results. The two blood samples from the Volkswagen, screwdriver, handbag, and lining were all from the victim, Su Manli. He handed the report to Xu Dayuan.
Zhou Ning asked curiously,
"Did Sun Wenxuan confess, Xu Da?"
Xu Dayuan nodded and sighed, exhaling a ring of smoke.
"Yes, she admitted that she stabbed Su Manli."
Seeing Xu Dayuan's expression, Zhao Xinli sensed something was wrong.
"What's the matter, boss? Isn't it good that the suspect confessed? We can close the case now!"
Xu Dayuan gave him a look.
"You don't know anything. Sun Wenxuan admitted to stabbing Su Manli, but it was under Yang Yufei's instigation. Yang Yufei thought Su Manli was fooling around with everyone, so he planned this race car plot."
Zhou Ning and Zhao Xinli exchanged glances, both stunned.