Looking at the small amount of crystals precipitated at the bottom of the plate, Yang Ning's eyes flickered slightly.
If I used fresh blood, the reaction might be even more significant, Yang Ning thought to himself.
As soon as the idea came to him, he unhesitatingly picked up the small knife beside him and made a light cut on his fingertip. A drop of crimson blood immediately seeped out and landed on another clean porcelain plate. He then used chopsticks to dip some of the filtered fruit acid juice and carefully dripped it into the blood. Before long, the originally pure red blood began to precipitate more clearly visible white crystals.
Although he was in this cultivation world and lacked precise chemical instruments, making this experiment crude and rudimentary, the results before him were enough to serve as a clue to present.
Yang Ning slowly picked up the porcelain plate containing his own blood, took the bucket beside him, poured clean water into the plate to dilute it, and then tilted his wrist, pouring it all into the waste bucket in the corner.
This plate contains my blood; I absolutely cannot leave any trace.
Next, he picked up the other plate with precipitated crystals and gently blew on it. After the liquid completely evaporated, leaving only a small amount of white crystals attached to the bottom of the plate, he carefully put the plate into the urea bag he carried with him.
After finishing all this, Yang Ning glanced at Xu Yinyin, who was still sitting there, and stretched lazily.
Xu Yinyin immediately caught his movement, stood up like a nimble sparrow, her eyes sparkling with anticipation. "Boss, what is it? Do you have the results?"
Yang Ning nodded. "I still need two more days to get all the clues."
"That's great!" Xu Yinyin almost jumped up. She clenched her small fists, her face beaming with excitement. "As long as we have clues, we can keep investigating! Sooner or later, we'll uproot those scum from the Demonic Cult lurking in the sect and purify it!"
Yang Ning's eyelids twitched, and he chuckled, nodding. "Yes, yes."
"You've worked hard, boss," Xu Yinyin scurried closer, tilting her delicate face up to look at him, her tone filled with concern. "This dungeon is damp and cold. Staying here too long will be bad for your health. Why don't we go back and rest first?"
Yang Ning looked at Xu Yinyin, whose eyes were sparkling, and nodded. He then picked up the urea bag, and the two of them walked out of the morgue together.
In the vast and deep corridor, only the sound of their footsteps and the occasional crackling of the oil lamps on the walls could be heard. As they passed the cell where the deranged mole was imprisoned, Yang Ning's gaze swept over the cell door with its food slot at the bottom, and his mind rapidly replayed the thrilling scene from before--
At that moment, Yang Ning heard the footsteps on the stairs getting louder. In desperation, he could only lower his voice and issue instructions to the person inside the room:
"Eat it now! Remember, from this moment on, you are not allowed to eat anything else! Nod if you understand!"
In the darkness, a hand covered in scars, with its nails fallen off, tremblingly reached out and tapped.
Receiving a response, Yang Ning did not hesitate. He immediately closed the iron sheet and, moving like lightning, quickly moved away from the door, hurrying back towards the morgue.
He knew very well that if he could make this mole die a few days later from poisoning, his suspicion would naturally be the smallest. However, this prisoner was mentally confused, trapped in this dark cage, unable to distinguish day from night, and could not even grasp simple time concepts like "mealtime."
But the brief moment of solitude just now was precious and could not be missed. In a flash, Yang Ning had to think quickly and ordered him to take the medicine immediately and not to eat anything from now on.
According to Yang Ning's calculations, if the mole took the medicine now, the time of death should be late tomorrow night. Previously, the Law Enforcement Hall had deduced from the captured moles that the onset time of this drug was about 12 hours, which is one day and one night.
According to the rules of the Law Enforcement Hall, tomorrow at Mao Shi (5 AM), the disciples on patrol would crouch down and carefully examine the situation inside through the bottom window. At that time, the mole should still be alive.
At Chen Shi (7 AM), the Law Enforcement Hall disciples would throw the morning steamed buns through the small window as usual. At that time, although the mole would still be alive, he would not eat due to Yang Ning's order.
After another day, at You Shi (5 PM), the evening steamed buns would be thrown in again. At that time, the mole should not have died yet, but he still would not touch the food.
Only until the morning of the day after tomorrow, when the disciples came to crouch down and examine carefully again, would they discover that he had already died and would see a total of four steamed buns left untouched in the cell—representing that the mole had not eaten for a whole day.
All these signs would perfectly mislead everyone into believing that the time of death occurred between the disciples' patrol after confirming he was alive and before the morning meal was discovered untouched. Working backward from this, the time of poisoning would be locked between Mao Shi and Chen Shi on the morning Yang Ning fainted in the Law Enforcement Hall due to "cold."
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