What exactly did Qin Liangyu bring that could help Li Mi solve the case quickly, and the people present were also a little curious.

Ordinary people in the market may not know Li Mi's name, but the people in the officialdom are very familiar with it, and they are also very interested in Li Mi's detective methods, so they came over one after another at this time.

Qin Liangyu handed the box he was carrying to Li Mi, and after opening it, he found that there were many bottles and jars inside, and even some glassware.

"The slave didn't know which bottle it was, so she had to bring them all......," Qin Liangyu said with a little apology.

Li Mi smiled and said, "It's okay." ”

As he spoke, he opened the small bottles one by one, fanned his hand lightly on the mouth, sniffed the smell, and then picked out one of the black bottles.

"Do you want to see my autopsy?" Li Mi said to Mo Hengluan, who hesitated for a moment before speaking.

"It is said that I want to take precautions, but human life is at stake, solving the case is important, you have a close relationship with Zhang Huangting, the official must be present to supervise, in order to avoid suspicion, let the mother and the girl in the building choose two sides to be a witness."

As soon as Mo Hengluan said this, Li Mi agreed, so he asked the bustard's mother to bring two personal girls up, and Li Mi asked them to prepare warm and moistened towels, covered their mouths and noses, and then walked into the Qingluo room.

The deceased was still lying on the bed, but it had been covered with a white cloth, and Wen Po did not dare to dress her.

Although it is a little disrespectful, I have to say that this girl's figure is excellent, the flesh of youth is full and snow-white, but there are many scratches and bruises on it, and the most beautiful things are placed in the dirtiest places, and they are covered with the shadow of death, which makes people feel indescribable regret and lamentation.

Li Mi took a wet towel to cover his mouth and nose, and then picked up the lamp in the room, and the bean-sized candle flame was placed at the bottom of the small black bottle.

After heating it for a while, purple smoke came out of the mouth of the bottle!

They finally understood why Li Mi had asked them to cover their mouths and noses with wet towels, because although this smoke was gorgeous, it had an extremely strong pungent smell, and they could feel the extremely corrosive smell even closer!

Li Mi was also attracted by this smoke earlier, so he consciously left these things, and it was because of this characteristic that he recognized this substance!

Earlier, he and Qin Liangyu designed the illusion of the spread of the fish and dragon, which needed to be used*, but the * of the Shenji Battalion was used for artillery, and it did not have the color of fireworks.

Li Mi knew that adding different metal elements to the * would produce different colors, so he worked with Qin Liangyu to make some * for illusion.

In order to make these*, he also specially consulted Shi Chongsheng and the master craftsmen of the Shenji Battalion.

With solutions such as seaweed mud and other things, these were successfully prepared*, but in the process of preparation, nitrate was used, as for potassium nitrate or sodium nitrate or other mixtures, Li Mi could not identify.

It's just that in the preparation process, this purple smoke is produced, and after the smoke is condensed, it becomes a small black and purple crystal particle, which is iodine, and in forensic medicine, iodine can be used to extract fingerprints!

That's right, all Li Mi has to do is extract fingerprints!

Since Zhang Huangting has not touched the deceased, Zhang Huangting's fingerprints will not be extracted from the deceased, and after the fingerprints are extracted, only need to be collected and compared, and even the real murderer can be confirmed!

In fact, the ancients discovered the characteristics of fingerprints a long time ago, so there were such identification methods as fingerprints, but they only stayed at the stage of pressing fingerprints, and did not apply the characteristics of fingerprints to criminal names.

However, through the particularity and uniqueness of fingerprints, it is not difficult to discuss whether fingerprints can be used as evidence in criminal cases.

On smooth surfaces such as glass, ceramics, and lacquerware, fingerprint extraction is as simple as using transparent tape.

However, it is more complicated to extract fingerprints on objects such as human body or clothing and accessories.

In later generations, you can use the characteristics of fine iron powder and magnets to brush out fingerprints continuously, and you can also use fluorescent substances, non-hydrophilic surfaces, you can use this method.

Because fingerprints are actually secretions or residues such as sweat and some proteins on the fingers, they can be extracted only by using good drugs according to their characteristics.

Of course, some of the more advanced infrared optical instruments can also directly observe fingerprints.

It's a pity that Li Mi can't use these methods, after all, the conditions are limited, and he didn't think of this idea of solving the case.

But Zhang Huangting said that he had not touched the deceased, and if he could pass the fingerprint verification, it would be the most direct evidence, and Li Mi had to search his stomach and think about how to do this.

So he finally came up with the classical iodine smoking method!

This method is also very simple, just use iodine to smoke the fingerprint, and then touch the metal silver, the fingerprint will turn black!

However, iodine is corrosive and cannot be used on living people, and it is barely enough to use for autopsy.

Li Mi was only slightly heated at this time, and the iodine was sublimated, and the purple smoke smoked the snow-white skin, and yellow-brown fingerprints appeared!

This hand is simply a stroke of genius, and the purple smoke is like the pen of a judge, brushing over the corpse, revealing fingerprints, as if it is haunted!

The human body extracts fingerprints no more than other materials, because the human skin also has sweat glands, but the sweat glands on the fingers are more abundant, and there are more residual fatty acids secreted in sweat, so they can be revealed, but the extraction is more complicated than the surface of other materials.

Li Mi's idea is that the iodine fumigation method is correct, but because there is no adhesive tape, only the silver plate transfer method can be used, but in this case, the follow-up comparison is more troublesome.

Fortunately, Li Mi had other methods, when he was with Qin Liangyu*, he added a lot of metal powder, and he had tried silver powder earlier, but the nature of metallic silver was very stable, and the burning was colorless, so Li Mi gave up, but there was a lot of silver powder left, and Qin Liangyu brought it over this time.

Sun Zhiru made a simple microscope for Li Mi, and naturally he wanted to grind a glass slide with high purity, and Li Mi evenly adsorbed the silver powder on the slide, and then printed it on the fingerprint, so that the fingerprint could be extracted on the slide.

At that time, the excess silver powder on the slide will be brushed off with a brush, and the remaining black fingerprints will be left on the transparent slide, knowing that if the slide is covered on the finger, it can be compared directly, and a large number of targets can be compared in a short time!

This is also a problem that Li Mi has long thought about, even if the fingerprints are extracted, if you want to compare, you have to extract the fingerprints of the suspects one by one and compare them again.

But there are so many people in the entire nephrite cave, if they are extracted and compared one by one, it will not be completed at all in three or two days.

Therefore, Li Mi simply made the fingerprint into a slide mold, and only overlapped and contrasted to be able to screen and investigate!

Of course, there are many fingerprints on the deceased's body, and there are also various parts, but there are not many that are relatively complete in clarity, after all, the fingerprints will not be complete when they are touched.

But one or two fingerprints on the deceased's chest and inner thighs are very clear, they are the complete fingerprints left by rubbing the chest or inner thighs vigorously, which just shows that this person's motives are very direct and evil, and they should be left by the murderer!

When everyone saw Li Mi's methods, they had already seen gods and ghosts, just like those gods and ghosts, using spiritual power to investigate the case, Mo Hengluan and the others looked stupid on the spot!

Jian Dingyong knew Li Mi's methods, but when he saw this scene this time, he was also shocked on the spot, as for the bustard's mother and the two girls, they were all sold in the kiln, and they didn't have much knowledge, but when they saw this, it was as if they saw Li Mi's psychic and let the unjust soul show their fingerprints!

This white flower's body, smoked by the purple magic mist summoned from his strange bottle, gradually showed fingerprints, and future generations felt magical, not to mention these ordinary people of the Ming Dynasty!

Although the others couldn't come in, they were still secretly watching from the outside, and they were all scared silly when they saw such a scene at this time!

Li Mi fixed the fingerprint slide with another slide to protect it, and then stood up and said to Mo Hengluan.

"Zong Rong, you should know that people's fingerprints are unique, everyone is different, and now you only need to compare them to find out the murderer!"

Mo Hengluan hadn't recovered from the shock at this time, because he had seen a lot of investigations, but he had never seen Li Mi investigate cases like this!

Sun Zhiru is Xu Shu, the military master of Shu Ying, and Pang Tong, Zhuge and Xu Shu are all disciples of Mr. Shuijing Sima Hui, novels such as the Romance of the Three Kingdoms, it is usually said that they are also teachers and friends, but the history books record that it is indeed the relationship between master and apprentice.

Xu Shu got the Taoist system of Sima Hui, the great master of Shuying, and had an almost crazy obsession with optical instruments, and the polished slides were made of crystal, which was strong and pure, and had extremely high clarity.

Li Mi found a lamp again, and used the concave mirror left by Sun Zhiru to concentrate the light and eliminate the shadow, the concave mirror in all directions is like a surgical shadowless lamp, although it is night, it is like a shadowless divine light projected from the sky!

Li Mi stood in this circle of light, and the shadow under his feet faded to the point of faintness, and everyone saw this, and even regarded Li Mi as a mysterious detective!

Li Mi called Zhang Huangting over first, pressed a fingerprint on the paper with his thumb, covered the slide, overlapped and contrasted, and the result could be obtained in the blink of an eye, completely clearing Zhang Huangting's suspicion!

Li Mi asked Qin Liangyu to draw a gourd in the same way, and made the fingerprints of other parts of the deceased's body into a comparison slide, and under the witness of Mo Hengluan and others, those martial artists pressed their fingerprints one by one to compare.

On the huge paper, everyone's fingerprints are left, and the name is marked with a fly's head next to the fingerprint, which one is excluded and which one is still among the suspects, it is also clear at a glance!

Mo Hengluan looked at it like this, and he was also relieved, because the martial artists in Honglanfang had all been compared, and there was no match, that is to say, these martial artists were not murderers, and this matter was easy to do!

Because they are not murderers, they will not affect the street parade ceremony the next day, let alone involve the Wuju Mansion test, Mo Hengluan finally realized why noble people such as Wang Hongzhi Wang Shizhen and others were impressed by Li Mi.

He was really happy in his heart, and it was thanks to Li Mi who took Suo Changsheng and cured his son, so he and Li Mi formed this friendship, and the court had a secret decree to let Li Mi assist him, all of this, now he finally understands!

Don't look at Li Mi's age, but he is by no means a person that ordinary people can imagine!