"From what Miss Yan said to me just now, it's not hard to tell that you have a deep affection for Miss Cai, more like an elder sister treating her like a little sister. So in my opinion, you should be the closest person to Miss Cai, right? But there's one thing I don't understand! "

Jiang Yunshan looked straight into Yan Shuiyao's eyes: "That's because you two have such a good relationship, then why did Miss Cai call this unfamiliar person, Wang Xiaochuan, to help him buy medicine and not ask for your help?"

As he said till here, Jiang Yunshan added another sentence, and his tone became even more overbearing, as he said:

"This question has troubled me for a long time. I hope that Miss Yan can help me solve this problem. This is very important."

"This …"

Yan Shuiyao was startled, maybe she had never thought that Jiang Yunshan would suddenly ask her this strange question, which in her opinion, didn't seem to have much to do with the case, and she was suddenly at a loss for words, clearly not knowing what to say.

Jiang Yunshan had noticed every single movement of hers. He carefully observed her and did not let any of her expressions or small movements on her face slip by, but from his subconscious actions, Jiang Yunshan was able to deduce the thoughts running through Yan Shuiyao's mind, confirming his other thoughts.

While Yan Shuiyao was in a state of panic, Jiang Yunshan did not deliberately remind her of anything. He completely treated himself as a spectator and planned to see how long it would take for this woman to be able to think of the best solution from this strange state.

Fortunately, Yan Shuiyao was a professional female who was experienced and knowledgeable. After a moment, she put on a look of enlightenment and said helplessly:

"Ah, my apologies Captain Jiang, but I have too many matters to take care of in these two days, so I have forgotten about some of them."

She took a sip of water and started to reminisce, "I remember now, the thing happened like this. Tiantian called me that night, but I was eating with Young Master Zhao of Jiuge Group and couldn't leave, so I let her think of a way herself."

With that, Yan Shuiyao passed the phone's communication record in front of Jiang Yunshan, and said: "Nuo, Captain Jiang, look. This last communication record was made when Tiantian asked me to buy triazole ketones for her."

Jiang Yunshan took the phone, and according to the records, Cai Tiantian had called Yan Shuiyao at 10: 45 p.m. on the day of the crime, and Yan Shuiyao rejected her with the excuse that she did not have time to eat with her friends, which resulted in Wang Xiaochuan buying medicine for her, and finally died accidentally at 2 a.m.

On the surface, there did not seem to be any problems with the communication record, and according to the live monitoring, Yan Shuiyao did not have any opportunities to commit the crime. But in Jiang Yunshan's heart, he had a nagging feeling that when Yan Shuiyao said those words, her expression was a little weird.

Jiang Yunshan sank into deep thought for a short while.

He remembered that last fall, Wang Xiaochuan had once shown him an essay called "On the Theory of Micro-Expression Language in Modern Criminal Investigation".

The author of the article was Yu Tianzuo. He was around the same age as Jiang Yunshan, a visiting professor at Jiang-Nan province's Judicial Police Officer Academy. He had a private clinic in Lincheng City that specialized in counseling and treatment of mental illnesses.

In his essay, Yu Tianzuo pointed out that micro-expressions were a very important part of a human's mental state of mind, whether it be an emergency or a transition between two kinds of mental states. It was caused by human instinct and could not be controlled by human thoughts, nor could it be disguised or disguised.

Micro-expressions occur when humans are stimulated or when a crisis is averted. They are an instinctive subconscious action …

Through the study of micro-expressions, we can find out what kind of mental state the person was in at that time, whether it was feeling guilty or excited, or maybe he was lying entirely.

People with different mental activities would have different instant microexpressions. For example, the eyes of people who were lying would inadvertently wander or evade, while their faces would slightly twitch.

For example, people who spoke half-truths would always smile at others or look away to hide their guilt when they were lying.

Micro-expressive language is the only subconscious action that cannot be imitated in human behavior. If it can be used well, it can be used to grasp the psychological trend of the suspect at any time. It will play an indispensable role in the investigation of the case.

Micro-expressions could be seen everywhere on people's daily lives, just like Jiang Yunshan and Yan Shuiyao. From the start of their conversation, all sorts of microexpressions rose up on their faces, showing their state of mind at that time.

Especially that woman Yan Shuiyao. From her initial fear and unease, to the relief she displayed at this moment, it was a deep display of the changes in her heart. From nervousness to a short, relaxing process.

Especially when Yan Shuiyao had just handed the phone over to Jiang Yunshan, she had purposely added the word "no" when she spoke, which showed her tensed state of mind, and its subconscious behavior after she suddenly relaxed.

"From the change in her expression just now, it seems like she didn't expect my question to be so ordinary, which is why her tense mood gradually relaxed. Although there's no way to prove that she has any direct connection with this case, but from the change in her expression, it's easy to tell that this woman definitely knows something."

Jiang Yunshan pondered in his heart, and at the same time, gave birth to a trace of admiration for Yu Tianzuo's theory. He couldn't help but think, if Yu Tianzuo were here at this very moment, would he be able to discover even more hidden doubts through these slight changes in his expression?

Although they were both in the Lincheng City, and Yu Tianzuo was considered to be part of the system, Jiang Yunshan had never met this "professor" who was around his age before.

Jiang Yunshan returned the phone back to Yan Shuiyao. He did not 'expose' the tricks in Yan Shuiyao's heart, but rather asked him for the name of the Young Master Zhao who was eating with her that night. The most important thing was, why did Cai Tiantian not join the dinner!

"It's like this, Captain Jiang."

Yan Shuiyao's expression became even more relaxed, and said: "Before Tiantian flew to the Lincheng City, she had already worked continuously for half a month with high intensity, so I helped her push away that meal. Young Master Zhao could understand, oh right, Young Master Zhao's full name is Zhao Qitian, he's the youngest son of, the chairman of the Jiuge Group.

"Mm, I've heard of it. The richest man in Jiangnan Province, his wealth is limitless!"

Jiang Yunshan took the opportunity to light a cigarette for himself. His expression was exceptionally relaxed, and asked curiously: "Zhao Qitian wouldn't simply want to treat you guys to a meal, right?"

"Of course not."

Yan Shuiyao shook her head helplessly and said: "Young Master Zhao has recently opened an entertainment company, planning to enter the acting world. To be honest, Jiuge Group is selling very quickly, and without a star, it would not affect you at all. Their original intention was to use this show to build a relationship with Tiantian, so that we could work together smoothly in the future."

"So that's how it is."

Jiang Yunshan nodded his head, and then took out the statement he took on at the scene and looked at it, and then asked suspiciously, "Miss Yan, according to the registration of the previous day, you and Miss Cai Tiantian seem to be staying in the same room, right? But we didn't see you go back in the video on the day of the murder, so I ask you, why didn't you come back to the guest room? "

I drank a lot of wine and felt very dizzy. Afterwards, Young Master Zhao even planned to take the others to the nightclub to spend some money, since I'm a woman after all, so I found an excuse to leave. Afterwards, I rented a room at the 7 day motel on the side and spent the night there.

Yan Shuiyao replied fluently. Jiang Yunshan was very curious and asked: "There's something I want to ask, if I remember that you can eat at the Di Hao Hotel, and that is Zhao Qitian's family's property, then why did he not entertain you at his own hotel but go to another place?"

"That's funny."

Yan Shuiyao shook her head helplessly, and started to explain: "Young Master Zhao likes to put on a high profile, and I've heard this news from other people around him. In fact, he has never eaten in his own hotel, he likes to enjoy the feeling of superiority from the crowd, and in his own industry, he would never be able to experience this feeling, it's too fake."

"Hur hur, so it's like that."

Jiang Yunshan unconsciously raised the corner of his mouth.

The so-called high profile, if explained in vulgar or vulgar terms, was actually just a simple act of posturing.

If one had an endless supply of money or a top-notch position in their heart to act tough, it would give rise to even more vices from popinjays, such as their desire for beauties.

Everyone loved beauty!

One of them was a rich young master who liked to act cool and arrogant, and the other one was a famous female celebrity who gathered millions of stars in one body. If there was nothing wrong with Zhao Qitian's sexual orientation, then Zhao Qitian would definitely drool over his beauty.

Thinking of this, Jiang Yunshan felt that it was necessary to investigate this Zhao Qitian. Firstly, to confirm the authenticity of the answers Yan Shuiyao gave him, and secondly, to investigate the trajectory of Zhao Qitian's actions on the day of the crime. Based on his personality, he could be one of the suspects.