Lu Jinping walked to the carriage and looked at them one by one, there were no obvious suspicious traces such as bloodstains, presumably the cloud vulture had cleaned it. He glanced back at the vulture. Yun Vulture was also looking at him, and when the two eyes touched, Yun Vulture quickly avoided his eyes in a panic, which made Lu Jinping even more determined to speculate in his heart.

Because Yunzi and her brother were present, it was impossible for Lu Jinping to take out modern equipment such as ultraviolet laser detectors in front of them to investigate, and he couldn't let them avoid it, lest he say that he had planted it, so he could only rely on visual inspection to determine which car was more likely to be the murder weapon.

The focus of his examination was the gap in the wheel, because the wheel had run over the victim's right leg and fractured, and it was open, so there must have been blood sticking to the wheel, which had been cleaned, but there may have been blood in the gap.

He examined the crevices of several wheels one by one, but, to his madness, the color of the wheel was red paint, and the color of the blood was also red, so it was very difficult to identify the blood stains on the red background, especially after cleaning, so after he searched them all, he still couldn't find anything.

He touched his chin, looked at these carriages, muttered for a moment, and suddenly a flash of inspiration flashed in his mind, he thought of the small red fragment found in the wound on the victim's leg, which speculated that it should be the paint fragment that fell off and fell into it after being crushed under the wheel, and judging from the shape of these cars, the degree of new and old paint, it is obviously not the same batch of manufacturing, but for the sake of safety, he still turned his head and asked Yunzi: "Did you buy these cars together or separately?" Where did you buy it? ”

Yunzi said: "There are two that I brought from Tubo, one was bought on the road, the remaining few were bought by Datang, some were bought in Beijing and some were bought in Tongzhou, what?" Is there a problem with this? ”

Lu Jinping did not answer her question. Since it was bought in different places, the paint is likely to be different, which is a great help in determining which car it is.

Lu Jinping said: "I want to use a knife to scrape a little paint on the wheels for inspection, is that okay?" ”

Yunzi said, "Okay, as long as you don't make the carriage too ugly." ”

"Rest assured, it only takes a little bit and it won't make a difference."

After that, Lu Jinping took out a few small paper bags and a knife from the forensic investigation box, scraped off a little paint from several cars, put them in paper bags, and numbered them.

Lu Jinping said to Yunzi: "Please give me a separate room, I will conduct an inspection." ”

"Inspection?" Yunzi was a little surprised, "What do these powders test?" ”

"You don't know that!" Xiong Zhu, who was on the side, immediately explained proudly, "This is our lord's unique skill, which I learned from a wandering Taoist, a kind of Taoist method used to solve cases, and you from the Western Regions naturally don't know it, although you just follow the lord's orders." ”

Yunzi nodded and said, "Okay, I have a lot of rooms, you can pick anything." ”

Lu Jinping saw that there was a groom next to him, and the groom stood next to him humbly and laughed, so he went over and said, "Is it okay to borrow your room?" ”

The groom nodded hurriedly and said, "No problem, you can use it as you like, sir." ”

Lu Jinping stepped in and closed the door, closed the window, took out the forensic investigation box, and took out a pocket infrared spectrometer from inside. This instrument is very sensitive and very fast, and can detect the infrared absorption spectrum of substances such as paint.

Although in ancient times, there were basically natural resin paints, and there were no chemical synthetic paints, but the resin composition was different in different places, so there would be different infrared absorption spectra in the infrared spectrum, which could help make the same determination.

Lu Jinping tested the infrared spectra of the paint on several horse-drawn carriages, and then tested the red paint fragment mentioned from the wound on the leg of the female beggar, and obtained the infrared spectra, which were entered into a microcomputer for comparison.

Soon, the graphics flickered, showing the same, proving that the paint on the axle of a carriage they had purchased on the road matched the paint spectrum of the deceased. It was determined that the car was the one responsible for the beggar's broken leg.

Lu Jinping packed up his things and came out, handed over the forensic investigation box to Ye Qingqing, and went straight to the carriage that Yunzi and they bought on the road, and began to carefully inspect the carriage again. At the same time, his eyes focused on Yunzi's elder brother Yun Vulture standing next to him. He immediately noticed that the vulture's expression was very uneasy, and his face was very ugly, and he was further sure that his test result should be correct.

Because it was targeted to focus on this car for inspection, Lu Jinping soon found that the soil embedded in the wheel seam was somewhat suspicious.

Just now, he also found what seemed to be mixed with blood, but it was not much different from ordinary soil, but he was a little suspicious. And now, when he locked the car, he was even more sure that the crack was probably a blood-soaked dirt.

Lu Jinping immediately took out a small ear spoon and scraped off the soil suspected to be soaked in blood, and there was a handful.

Lu Jinping walked up to Yun Zi and Yun Vulture with the dark red dirt and said, "Just now, my inspection has preliminarily confirmed that the carriage you bought on the road is the carriage that crushed the female beggar and caused her leg bone to be broken.

Yun Vulture looked at Lu Jinping in horror, and then looked at her sister Yunzi, her lips trembled twice, but she didn't speak.

Yunzi also noticed that his brother's expression was wrong, bit his red lip lightly, looked at Lu Jinping and said, "What is your evidence?" ”

Lu Jinping raised the paper bag in his hand and said: "This is the evidence, what you saw just now, the soil I extracted from the cracks in this car, I suspect that there is blood on it, now, I want to do a simple test to prove it." ”

Speaking of this, Lu Jinping turned to Xiong Zhutou and said, "Please go and catch some flies for me, the kind of flies that lay eggs on the carcasses of dead animals." ”

"Flies? How do you catch this? Xiong Zhutou asked in fear.

"It's very simple, you go find some animal blood and sprinkle it on the ground, and soon there will be flies, and then you can catch it with a gauze cover."

As soon as he heard this, Yun Zi couldn't help but glance at Lu Jinping, thinking to himself, this young lord has a lot of ideas. He said, "I have ready-made chickens in my kitchen, and I can kill them." ”

Yunzi instructed the servants to catch a chicken and a gauze from the kitchen. The bear catcher took the chicken, drew his waist knife and cut it, spilling the chicken's blood on the ground.

In ancient times, the sanitary conditions were far worse than in modern times, so there were many flies in the city, and soon many flies landed next to the blood on the ground. The bear catcher hurriedly covered it with a gauze cover and caught more than a dozen at once. grinning and said to Lu Jinping: "Sir, your idea is really amazing, you will be caught immediately." ”

Lu Jinping said: "This is very simple, flies like blood, nothing unusual." As you saw earlier, flies will actively chase blood, and if there is blood on the soil extracted, the flies will definitely go towards the blood. Right? ”

Yunzi already roughly knew what Lu Jinping was going to do, and nodded a little nervously.

Lu Jinping instructed Xiong Zhutou to cover up the blood stains on the ground with soil, and the smell of blood disappeared. Then he walked to another clean place, put the paper bag on the ground, and asked the bear catcher to put the gauze cover on which he had caught the fly, and let the fly out.

Soon, the dozen or so flies were first scurrying around in the gauze tent, and soon they were all concentrated on the pile of dirt.

Seeing this scene, Yun Zi's face immediately turned iron-blue, turned his head to stare at his brother Yun Vulture, and said through gritted teeth, "Did you really kill this beggar?" ”

Yun Vulture's face turned pale, and her lips trembled: "Oh, I didn't mean to, she, she walked in the middle of the road, I called to dodge, she didn't let me, but I was too late to rein in the horse, so I hit her." ”

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