Lou Yu maintained his professional composure and raised his hand to signal, "Everyone, please calm down."
"This is just a routine investigation. I need your cooperation in taking a statement. This is also to eliminate your suspicion as soon as possible."
Xia Zhining stepped forward and said firmly, "I believe in Professor Ning! They have no motive at all."
Lou Yu raised his hand and made a soothing gesture, his voice calm and steady: "Everyone, don't worry."
"We understand everyone's feelings, but the current situation is that the key evidence was indeed found in this car, and we must investigate this thoroughly."
He turned to Professor Ning, his tone softened and his position made clear: "Professor, we are not treating you as a suspect."
"You and your team are the ones most familiar with this shipment, and we need your help to figure out how this kite handle got in there."
"The sooner you cooperate with the investigation, the sooner we can clear your name."
"But I have to discuss cooperation with Principal Xiao Xia next afternoon." Professor Ning glanced at his watch anxiously, "And I have to rush to the capital for a meeting tonight!"
Lou Yu gave an apologetic expression, but remained firm: "Precisely because time is pressing, we must hurry."
"This car has now become a key incident scene in the case. Regulations require all relevant personnel to cooperate and remain at the scene until the basic investigation is completed."
"This is a necessary process for handling the case. Please understand."
Before he finished speaking, a calm voice broke the deadlock.
"etc."
Ji Shuyun, who had been observing quietly from the side, walked forward slowly.
His gaze passed over the arguing crowd and fell directly on the evidence bag containing the physical evidence.
Ji Shuyun turned to Lou Yu, his tone calm but with undeniable weight: "Officer Lou, the appearance of this physical evidence proves the innocence of Professor Ning and his colleagues."
"What?" Lou Yu frowned.
Ji Shuyun put on gloves and gently took out the handle wrapped with the kite string from the evidence bag. His gloved fingertips precisely touched the connection between the handle and the broken string.
"Look here," he said, clearly enough for everyone to hear, "the cut where the thread is broken is way too smooth."
He raised his head, his eyes sweeping across everyone's puzzled faces, finally landing on Professor Ning's hands that were trembling with anxiety.
"Professor Ning is a well-known agricultural expert both domestically and internationally, and her hands have long been engaged in the most precise experimental operations."
Ji Shuyun said slowly, "If she really cut the kite string with a sharp knife in a desperate situation in order to quickly destroy the evidence, then the cut should have been a clean and sharp one."
"Or perhaps she uses a subtle and unique angle of force due to nervousness."
He raised the handle again, exposing the smooth cut to everyone's sight.
"The edge of this incision has extremely fine burrs from repeated friction."
"It wasn't cut quickly by a knife, but rather by someone using a less sharp tool, like nail clippers or a pair of very blunt scissors, and then cutting and grinding it repeatedly in a leisurely manner."
The scene was silent, and everyone was attracted by this detail.
Ji Shuyun's voice was decisive, and he gave the final conclusion:
"How could a murderer, after committing arson and needing to flee the scene in a hurry and hide the evidence, have the time and inclination to find a place to sit down and slowly and repeatedly cut a kite string?"
"There's only one explanation."
Ji Shuyun narrowed his eyes and said, "This handle was prepared by someone before the arson. This is a tool for cutting stolen goods."
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