Li Nan seemed to understand a bit. To put it bluntly, no matter how powerful the hypnosis technique is, it's best to use it on only one person at a time. Once the number of people increases, it will inevitably increase interference and variables, affecting the hypnosis effect.

"Vice President Yang, I have a question. There's a saying online that the stronger a person's willpower, the less susceptible they are to hypnosis. Is that true?"

Vice President Yang laughed and said, "That's just a rumor. What is willpower? It's similar to self-control or concentration; it's just a matter of self-control in a person's subjective consciousness."

“I’ve discussed this issue with Lina over the years. In the eyes of these experts, people with so-called strong willpower are actually easier to control. Because…”

Vice President Yang paused for a moment, took a sip of water, and then slowly said, "Actually, the stronger a person's willpower, the greater their desire to protect their belief, even to the point of being abnormal. Doesn't this perfectly match the first point that hypnosis can amplify inner desires?"

"Oh, I see!" Xiong Yingjun finally understood the limitations of hypnosis. "In other words, even the most powerful hypnosis can only control a person's subjective thoughts at a time and within a limited scope?"

"In other words, hypnosis cannot make a victim commit suicide or do something against their primal instincts. So, thinking about it this way, isn't hypnosis actually not that useful? And the cost is so high?"

Li Nan also arrogantly thought she understood.

"Not very effective?" Vice-Director Yang stared wide-eyed at Xiong Yingjun. "Old Xiong, your apprentice seems to be getting dumber and dumber!"

Xiong Yingjun was a little embarrassed. In his opinion, this hypnosis technique didn't seem as powerful as the legends claimed. It didn't work for this or that, and it could only be used on one person at a time. It seemed a bit of a waste of time!

"Putting aside Lina from the Russian bear's help to us, do you still not understand, even after all this, just how terrible the psychological expert hiding behind the Meiluo Academy case has done?"

"He has pushed these three limits to their absolute limit!"

Vice President Yang asked Li Nan to retrieve the case files from Meiluo Academy, while he glanced through them and pointed out the key points to Li Nan and the other person.

"First is Mei Luo's first case, the girl who died in the plum blossom grove. The girl couldn't have committed suicide, but controlling her to stand still with her back to the murderer doesn't violate the three limits."

"The murderer, Liu Xiangdong, had a very bad relationship with his girlfriend, the deceased Li Yan, before the incident. He was hypnotized and his desires were amplified, making him want to kill her. In the end, he stabbed her in the neck. This is quite reasonable!"

"I even think that the frequent conflicts between them may very well be the result of being influenced by a behind-the-scenes manipulator, which gradually accumulated and led to a qualitative change."

"As for carving words, as a college student and the president of a student association, carving words on a smooth and flat surface does not violate anything at all."

What Vice President Yang said seemed to make some sense; it wasn't entirely baseless speculation, nor did it break the three major limits of hypnosis. Li Nan and the other listened quietly as he continued.

"As for the construction site death case, it's even easier to explain. At the bus stop, the deceased and the mysterious person stared at each other for more than ten seconds before the deceased was controlled. It's perfectly normal. Exchanging water cups doesn't violate the three limits either."

“The mysterious man must know that Prince He is fond of fine wine. As long as we give Prince He a signal: that he has good wine in his hand and that he will enjoy it properly at the construction site later, Prince He’s desire to drink will be amplified. He will have no problem drinking a mouthful of the water of life!”

“That explanation is indeed very reasonable!” Li Nan nodded. At the time, their task force had already discussed that the mastermind might have hypnotic abilities. After hearing what Deputy Yang said today, the truth should be just like that!

"Let me first talk about the recent case of a mistress dying, the one at Caiyun University of Technology. There's also a theory behind it, which I'll explain to you two later."

“With the introduction of hypnosis, the approach to cases involving the death of a mistress becomes very clear.”

"The deceased must have known the murderer, which is why the door was opened for him to enter the house. Then, after being hypnotized, the deceased wrote or should be called transcribed a suicide note, and then took an overdose of sleeping pills. Here, the sleeping pills must have been tampered with by the murderer, making the hypnotized deceased think they were other delicious things."

"And then, there's the bathtub..."

Before Vice President Yang could finish speaking, Li Nan felt a discomfort in her stomach again. This damned shadow!

"Then there's what's really impressive about this killer: in this case, he not only hypnotized the victim, but he may have also hypnotized the security guard in the monitoring room at the same time."

“Analyzing the actions of the wrongly accused Peng Yuanyuan, it is entirely possible that while she was having a friendly conversation with the deceased and was being captured on surveillance footage, the murderer happened to call the security guard. Using the key set up during hypnosis, he could have temporarily turned off the surveillance with just a verbal command.”

"It seems this murderer was indeed a master of psychological hypnosis!"

"It's terrifying to think about!"

"Next, I'll explain another theory to you both. This theory can explain the problem with the Blood Rose video!"

"This is the hypothesis about color pheromones!"