"You say you love lilacs the most, because that's your name, what a melancholy flower, what a sentimental man. When the flowers wither, when the picture is frozen, what a delicate flower, but it can't escape the wind and rain. A life of floating, shaking, and a dream of how many beautiful becomes, just like this, came in a hurry, leaving me to worry about it for the rest of my life. The grave is full of flowers, how beautiful you desire. Look at the mountains and fields, do you still feel lonely? Listen there, there's someone singing, that song you love the most. There are many troubles between cities, and there is no need to worry about ......"

I have to say that this song is very beautiful. The person who sang was called Zhang Ao, a student of the Chinese Department of S University in City A, today was his birthday, he invited his two best friends, Qin Li and Yue Peng, and brought his girlfriend Su Rou. Yue Peng also brought his girlfriend. A group of five people went to eat first, and finally came to this KTV that is very famous in City A and opened a private room. Su Rou's favorite song is this "Lilac", Zhang Ao couldn't sing it before, but he practiced hard for a few days, and now he sings it, which is also very tasteful.

"Brother Ao, yes, if I were rourou, I would marry you." Yue Peng's girlfriend, Wu Nan, a hot girl with a full personality, said loudly.

"Nan Nan, with your temperament, it is estimated that Yue Peng, a gorilla with developed limbs and a simple mind, can hold it." Qin Li said with a smile.

"You want to hold, but the old lady won't let me. What happened to Peng? What's wrong with being simple-minded and having developed limbs? Isn't it better than your hemp stick? Ah Peng is simple-minded and has developed limbs, but he can find a girlfriend, you have a developed mind, and you can't even find a boyfriend, so embarrassed to say? Wu Nan's tone was full of spiciness.

Qin Li touched his nose in embarrassment, it didn't hurt people, but it made people choke, and he was depressed in his heart.

"Qin Li, you have one." Zhang Ao stopped and took a sip of beer.

"Okay." Qin Li took the microphone, walked quickly to the song machine, and ordered a song "Enchanted". Yue Peng turned off all the lights, and the domineering melody sounded quickly, followed by Qin Li's slightly vicissitudes of life.

At this time, Zhang Ao took out his mobile phone, glanced at it, walked quickly to the window, and lit a cigarette.

A strange scene appeared. A strange purple lilac flower floated in from the window and landed at Zhang Ao's feet. Zhang Ao grabbed the flower, leaned under his nose, and took a deep breath: "Hmm...... Yes!!! ”

With a scream, Zhang Aoyuan opened his eyes and fell. Qin Li turned off the music and immediately gathered around with the rest of the people. Yue Peng sniffed: "It's the aroma of benzene, it seems that Brother Ao is poisoned." He probed Zhang Ao's snort, and his face changed instantly. Immediately, he stretched out his slightly trembling right hand and probed Zhang Ao's carotid artery, his face pale: "Brother Ao...... Dead ......"

"What ???"

"Ah!!!!!h Su Rou shouted sadly, hugging Zhang Ao's body tightly, crying silently.

"What's wrong?" A stout figure barged in and asked.

"Dead, dead." Rao is Wu Nan's temperament, and now he is also tense up, for fear that he will collapse.

The man who broke in frowned and said in a deep voice to the girl behind him, "Ke'er, call the police." Then, several figures broke in, and a man led by him asked, "Brother Yun, what's wrong?" ”

"Someone is dead, Qingyun, quickly, take everyone to protect the scene." The stout man was none other than Heyun, and he commanded in an orderly manner. Soon, several people on the scene were arranged by him to another room. After leaving Zhuge Qingyun and Xin Ke to appease a few parties, He Yun returned to the scene, and his brain was spinning quickly: Isn't it a targeted killing? So who threw the flowers into this room? No, it's not an undirected killing. When He Yun came to the window, he immediately denied his guess. He Yun secretly scolded himself for being stupid in his heart, this is the sixth floor, even if it is an existence at the level of the king of special forces, it seems that he can't throw a lilac that weighs only a dozen grams, plus benzene is at most more than thirty grams, right? It seems that there is something else strange about this case.

Putting on gloves, He Yun turned on the bright flashlight he was carrying, picked up the lilac that fell to the ground, and examined it carefully. Sure enough, there was a very small strangulation mark on the flower stalk, and if you didn't look closely, you wouldn't be able to see it at all. He Yun glanced at the scene again, and on the table, he saw a cassette recorder. "What age is this, and it's still ...... Wait, I see, I see. Then, next, it's the murderer. ”

"Hey, who are you? Why did you run to the scene of the crime? The voice was familiar.

"Oh," He Yun came back to his senses, "Officer Sun, long time no see." He looked back and chuckled.

A few black lines quickly appeared on Sun Zhiliang's head, and he muttered in a low voice: "Plague God." ”

He Yungan laughed a few times: "I didn't expect you to lead the team, sorry, sorry." ”

"Don't do this with me, I want to see how you, the big detective, can solve this case and not kill people in a targeted manner."

"Stupid,. What is not a targeted killing, this is clearly a murder case, and the murderer is between Su Rou, Wu Nan, Qin Li, and Yue Peng. ”

"Oh? Why are you so sure it's a murder? ”

"Then I'll talk about it scientifically. First of all, if there is a smell of benzene at the scene, it is assumed that the deceased died of benzene poisoning. Well, let's say that the weight of that lilac flower is fifteen grams, plus the mass of benzene, it will not exceed a hundred grams at most. And this is the sixth floor, the floor is fifteen meters above the ground, and the window is more than one meter high, which is counted as sixteen meters. Then, to throw a lilac from the ground here, a force greater than two thousand newtons must be exerted. Coupled with the influence of wind, centrifugal force, etc., this value is even greater, even the special forces king can't do it. Moreover, if you want to poison and kill people, you must also ensure that benzene is not spilled at all, so who can do it? ”

"Well, why don't you just catch it with a rope?"

In this case, because of gravity, the lilacs will fall vertically, and it is impossible to fall into the window. So to sum up, this is a murder case," He Yun's tone was extremely firm, and it seemed that no one could question it, "Moreover, the murderer was between those four people. ”

Sun Zhiliang took a deep breath, it turned out that he was negligent.

He Yun walked to the window, poked his head out, and looked up. It's a huge billboard, which seems to be used by this KTV called "Hongda" to advertise, and it wraps the seventh and eighth floors together. It seems unlikely that the killer would have set a trap from the upper floor. Just as Kazumo was about to leave, an inconspicuous mass attracted him. He Yun reached out and took down the lump of things, and asked, it was a sticker. This mass of self-adhesive sticks to the bottom of the billboard, and it is easy to ignore if you don't look closely. But what is it used for? Is it a construction legacy? Or an accomplice to the murderer? He Yun frowned, staring intently at the glue. Suddenly, he saw a few fibers sticking to the glue. It seems to be ...... Line! He Yun smiled, it seems that the murderer's method is like this.

He Yun turned on the flashlight and searched the room carefully. Sure enough, Heyun secretly thought, self-adhesive, cassette recorder, wallpaper, this is really a perfect killing chain.

"Yunyun, the results of the forensic autopsy are out. The cause of death was not benzene poisoning, but cyanide. Sun Zhiliang's face was a little gloomy.

What the? He Yun was stunned. He immediately ran to the scene, squatted down at the place where the lilac fell for the first time, found another handkerchief, wiped it vigorously, and then sniffed the smell on the handkerchief, it was benzene. It seems that benzene is just a trick for the murderer. So, how does cyanide get into the body of the deceased? Who was it that set up such a well-thought-out plan to kill the dead?

Everything has become confusing.