The courses in universities are generally very rigid and boring, basically the teacher asks and answers himself on the podium alone, and the students entertain themselves below, but Liu Yingqu's courses are very vivid. Professor Liu Yingqu's forensic laboratory science refers to the science in which the forensic technology department uses the principles and methods of chemistry and physics to discover, extract, identify, and inspect and identify physical evidence related to criminal activities in accordance with national laws and regulations, so as to expose and confirm crimes.

Years of research experience have made Liu Yingqu's courses extremely colorful, he rarely turns over the teachings, basically citing a variety of cases, which can be said to be through the ancient and modern, in one actual case, to explain all the things to be taught. Through such a course, Mu Yuan found that although he had read a lot of books on this subject before, the practical operation was not very large.

Due to the vividness of Mr. Liu's teaching, the two classes seemed very short. After class, Liu Lao had to give another class, this time he didn't let Mu Yuan go to audit, but asked Liu Chang to take his office to get the materials.

"Let's go, Mu Yuan, I'll take you to get the information!" Liu Chang patted Mu Yuan's shoulder.

Liu Nian and Fang Shenchao still had classes in the morning, so they greeted Mu Yuan and hurried to the scene, but what was strange was that Lu Huaxin and Wang Yuhan did not leave, but followed closely.

"Yu Han, Liu Nian and Shen Chao have already left, why don't you go to class?" Liu Chang asked with a smile.

"I ...... I'm not feeling well and don't want to go! Wang Yuhan was a little speechless and argued.

"Oh, that's it!" Liu Chang laughed evilly, "Then hurry up and go back to rest!" ”

"Senior brother, you!" Wang Yuhan's face turned red with anger, and he simply pursed his mouth and ignored Liu Chang.

"Muyuan, you can go to my laboratory in a while!" While Liu Chang and Wang Yuhan were talking, Lu Huaxin came to Mu Yuan's side, "I'm studying your magic fire, but it's still a little bit close, you can take a look!" ”

"Ahh Mu Yuan was shocked, Lu Huaxin had studied his fire, this was too powerful, did he know how to refine the fire? Over the years, he has rummaged through many ancient books and classics, but he has never found a method of refinement.

"I know the rules, the mystery of magic can't be revealed to others casually!" Seeing Mu Yuan's hesitation, Lu Huaxin hurriedly explained, "I'm just showing you the results of my research, and I don't mean anything else!" ”

"Okay, I'll take a look at it after I've finished taking the information in a while!" Mu Yuan was also full of curiosity about Lu Huaxin, if Lu Huaxin really had a refining method, maybe he could further upgrade his fire.

"Alright, let's go!" Liu Chang urged, "After I finish getting the information for Mu Yuan, I have other things!" ”

Several people followed Liu Chang to Professor Liu's office, and as Liu Yiqu's assistant, Liu Chang stayed in his office for a long time and took care of some teaching matters for him. Most of the materials that Liu Yingqu left to Mu Yuan are textbooks, in addition, there are some notes and other things, such as the content that Liu Yingqu sorted out according to the case, among them, there is also the thing that Mu Yuan wants to get the most, that is, the photo of the town charm, and the attached one is the file of this case.

After getting the information, Lu Huaxin couldn't wait to pull Mu Yuan to his office, and Wang Yuhan was like a little fart, always following Mu Yuan, she rarely spoke, but kept peeking at Mu Yuan with her eyes, full of curiosity about this little junior brother who had just arrived. The laboratory Lu Huaxin is talking about is actually the university's criminal investigation laboratory, and this place is indeed not something that ordinary people dare to walk into. How to describe it, to put it simply, it is like a chemistry laboratory and the dissection room of the health school, and when you walk into the building of this laboratory, you can clearly smell formalin and various chemicals.

Along the way, Mu Yuan could see all kinds of strange experimental equipment through the doors and windows of various laboratories, as well as many human specimens, if he was a timid person, he would probably be frightened by these things and his legs and feet would be weak.

"Little junior brother, you don't seem to be afraid at all!" Wang Yuhan stared at Mu Yuan curiously with two big eyes, she studied criminal psychology as an undergraduate, and after being admitted to a master's degree, when she came here for the first time, she was scared and screamed, and finally she didn't even have the strength to run out, and she was carried out by Liu Chang and a few people.

"Afraid! How could you not be afraid! Makihara said frankly, "It's just a little bit of preparation!" ”

"What's there to be afraid of?" Lu Huaxin asked puzzledly, "It's all dead, it's just disgusting at most!" ”

Wang Yuhan rolled his eyes, Lu Huaxin is a well-known nervous person, although when he first came into contact with these things, he also vomited, but he was not afraid at all, everything was experimental material in his eyes, only liked and hated, but he was never afraid of this word.

"Little Senior Sister, since you are so afraid of these things, why do you still want to take the graduate school entrance examination for this major!" Makihara asked curiously.

Wang Yuhan's cheeks flushed, and he explained: "Angry, since I was a child, the whole family has said that I am timid, and I want to prove it to them!" ”

Mu Yuan was speechless, isn't this angry gamble a bit big, after she really graduates, it will be difficult to engage in other jobs, just with her courage, is she just nesting in the office as a clerk?

"Then what will you do when you work in the future?" Makihara asked.

"Work?" Wang Yuhan thought for a while and said, "If you can go to the scene, you can go, and if you can't go, you can be a document appraiser!" ”

Coming to the top floor, Lu Huaxin opened the door of a laboratory, and then couldn't wait to rummage through the cupboard to find various utensils and medicines, and brought them to the experimental table one by one.

After Lu Huaxin tossed for a while, he turned on the computer on the side, called up the video of Mu Yuan's performance, and played it again, while saying: "Mu Yuan, it can be seen that you are using a kind of cold fire, and at present, there are only a few cold fires we have found, such as ghost fire, fireflies, and some fireworks used in performances!" ”

Usually found in the countryside and on dry days in summer, but occasionally in the cities, the "ghost fire" is mostly cyan, blue, or yellow, and has only been included in scientific discussion for about 200 years, but it is still very controversial. The more popular or popular explanation is that the main ingredient of ghost fire is phosphine, a colorless gas. It has a very low ignition point of only 40 degrees, and once released into the air, it reacts with oxygen and burns, usually in the form of blue light. In addition, there is another inference that ghost fire is not the result of combustion, but a chemiluminescence phenomenon. In this case, the energy released from the chemical reaction is not heat, but only visible light, similar to bioluminescence.

"I've carefully observed your Demon Fire, and found that it is not quite consistent with the first conclusion of the Demon Fire, but more inclined to the second inference, which is the chemiluminescence phenomenon!" Lu Huaxin explained, and then showed a disappointed expression, "Unfortunately, this situation has always been a difficult subject, and now only chemistry similar to glow sticks has been developed, which is not a real flame, and there is still a long way to go!" ”

When Mu Yuan heard this, he realized that Lu Huaxin didn't really know the password of the fire, he was just trying to find a way to study a flame similar to the fire, but Mu Yuan was not disappointed, but admired Lu Huaxin a little, because Lu Huaxin is really a scientific idiot, and his research on science is not comparable to ordinary people.

"What about Fireflies?" Mu Yuan asked, he also hoped that Lu Huaxin could develop a flame, because the crayfish was also obsessed with his magic fire, if Lu Huaxin could find such a flame, then he would also have a set of countermeasures for the crayfish.

"Firefly has already had certain research results, and its components are mainly luciferase!" Lu Huaxin said, quickly opened a vessel, and used the dropper to suck out a few drops of transparent liquid and lower it on the glass sheet.

In a few seconds, those few bits of liquid began to glow, a pale yellow glow, very faint.

Mu Yuan nodded, this luciferase is the luminescence principle of fireflies, strictly speaking, this is not a flame, it does not have any temperature, which is very similar to the low temperature of the fire.

"However, there are a lot of problems with this!" Lu Huaxin explained, "It's hard to control the time it glows, and you can't arbitrarily control the then and then extinguishing of fireflies!" ”

"What about the cold fireworks?" Makihara asked.

"Cold fireworks are the worst kind!" Lu Huaxin said, "Far less than the first two! ”

This point Mu Yuan has long thought of, cold fireworks are the use of metal powder with a low ignition point, after a certain proportion of processing of cold light smokeless fireworks, cold fireworks have a low ignition point, ignition point at 60 °C-80 °C, external temperature 30 °C-50 °C, no harm to the human body. Due to the low level of risk, this technical material is often used in some stage shows.

"Alright, alright!" Wang Yuhan was impatient, "I have explained so much, it's not just empty talk!" Little junior brother Muyuan, hurry up and show my sister a hand, let me see and understand! ”

Just now, Wang Yuhan has watched the video of Mu Yuan's performance, and she can't wait to see the live performance, after all, the charm of Mu Yuan's magic fire is too great.

"Okay!"

Mu Yuan also knew that Zi couldn't dodge, it seemed that he had to take out the fire and let them take a look, anyway, the two in front of him decided that he was a magician, and there was no need to worry about the two of them having any other ideas, but at this moment, Mu Yuan's mobile phone rang.