Lu Jinping walked to the carriage and looked at it one by one. There were no obvious suspicious signs of blood. It must have been Yunjiu who had cleaned it. He looked back at Yunjiu. Yunjiu was also looking at him. When the two eyes touched, Yunjiu quickly avoided his eyes in panic, which made Lu Jinping even more determined to make his guess in his heart.

Because Yunzi and her brother were present, Lu Jinping could not take out modern equipment such as ultraviolet laser detectors in front of them for investigation, and they could not avoid them, so he could not say that he had framed it. Therefore, he could only rely on visual inspection to determine which car was more likely to be the murder weapon.

The key part of his inspection was the gap in the wheel. Because the wheel crushed the victim's right leg, it caused a fracture, and it was open, blood must have adhered to the wheel. The wheel was cleaned, but there may be blood marks in the gap.

He inspected one by one in the gaps between several wheels, but what drove him crazy was that the color of the wheel was red paint and the color of the blood was red. In this way, it was very difficult to identify the blood stains under the red background, especially after cleaning, so after searching them all, he still couldn't find anything.

He touched his chin, looked at the carriages, pondered for a moment, and suddenly a flash of inspiration in his mind. He thought of the small red fragment found in the victim's leg wound. The thing was supposed to be the paint fragments that fell off and fell inside after being crushed under the wheels. Judging from the shapes and the newness of the paint, it was obviously not manufactured in the same batch. However, for the sake of safety, he turned around and asked Yunzi, "Did you buy these cars together or separately? Where did you buy them?"

Yunzi said: "There are two cars I brought from Tubo, one was bought on the road, the remaining cars were bought from the Tang Dynasty, some were bought from the capital and some were bought from Tongzhou. What's the matter? Is there any problem with this?"

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

Lu Jinping said: "I want to scrape a little paint on the wheel with a knife for inspection, is it OK?"

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

"Don't worry, it only takes a little bit and will not cause any impact."

After saying that, Lu Jinping took out several small paper bags and a knife from the forensic investigation box, scraped off some paint from several cars, put it in the paper bag, and wrote the notes on the numbers.

Lu Jinping said to Yunzi: "Please give me a separate room and I want to inspect it."

"Examination?" Yunzi was a little surprised, "What are these powders tested?"

"You don't know this!" The captain beef on the side immediately explained with a smug chest pain, "This is our Lord's unique skill. He learned it from a Taoist Yunyou. It is a Taoist method used to solve cases. You who come from the Western Regions naturally don't know it, even if you follow the Lord's instructions."

Yunzi nodded and said, "Okay, I have so many rooms, I can choose whatever I want."

Lu Jinping saw the room with a groom next to him. The groom stood beside him and laughed humbly, so he went over and said, "Can you borrow your room?"

The groom nodded quickly and said, "No problem, master, please use it casually."

Lu Jinping stepped in and closed the door, closed the window, took out the forensic survey box, and took out a pocket infrared spectrometer from it. The instrument has high sensitivity and a very fast detection speed. It can detect the infrared absorption spectrum of substances such as paint.

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

Lu Jinping tested infrared spectra on the paints on several carriages extracted, and then tested the red paint fragment mentioned from the wound on the leg of the victim female beggar. The infrared spectra was obtained and entered into the microcomputer for comparison.

Soon, the figure flashed and the same was shown, proving that the paint on the axle of a carriage Yunzi and his friends purchased on the road was consistent with the paint spectrum of the deceased. It was confirmed that the car was the injured object that caused the beggar's leg fracture.

Lu Jinping packed up his things and handed the forensic survey box to Ye Qingqing. He went straight to the carriage that Yunzi and the others bought on the road, and began to carefully check the carriage again. At the same time, his eyes looked at Yunzi's brother Yunjiu standing next to him. He immediately found that Yunjiu's expression was very uneasy and his face was very ugly, and further confirmed that his test result should be correct.

Because it was focused on the car for inspection, Lu Jinping quickly found the embedded soil at the wheel joints and found that it was somewhat suspicious.

Just now, he also discovered that the soil seemed to be mixed with blood, but it was not much different from ordinary soil, and he was just a little suspicious. Now, when locking the car, he further confirmed that the gap was probably soil mixed with blood.

Lu Jinping immediately took out a small ear spoon and scraped off the suspected blood-soaked soil, and there was a small pinch.

Lu Jinping walked to Yunzi and Yunjiu with the dark red soil and said, "Just just now, my inspection has initially confirmed that the carriage you bought on the road is the carriage that crushed the female beggar and caused her leg bone to break.

Yunjiu looked at Lu Jinping in horror, then looked at his sister Yunzi, her lips trembled for a while, and she didn't say anything.

Yunzi also noticed that his brother looked wrong, and gently bit his red lips, 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 just saw, the soil I extracted from the gap in the car, I suspected that it was covered with blood. Now, I want to do a simple test to prove this."

Speaking of this, Lu Jinping turned to the bear captain and said, "Please catch some flies for me, the kind of flies that lay eggs on dead animals."

"Fly? How do you catch this?" Captain Bear asked in panic.

"It's very simple. If you go find some animal blood to sprinkle on the ground, and fly will come soon, and then you can catch it with a yarn cover."

When Yunzi heard this, he couldn't help but look at Lu Jinping with a good look and thought that this young lord had a lot of ideas. He said, "I have ready-made chickens in my kitchen, just use them to kill them."

Yunzi ordered the servant to grab a chicken and also brought a gauze cover from the kitchen. Captain Bear took the chicken, pulled out his waist knife and cut it, sprinkled the chicken blood on the ground.

The sanitary conditions in ancient times were far inferior to those in modern times, so there were many flies in the city, and soon many flies fell next to the blood on the ground. The bear captain quickly covered it with a gauze and caught more than a dozen. He grinned and said to Lu Jinping: "Sir, your idea is really great, you will catch it immediately."

Lu Jinping said: "This is very simple. Flies like blood, nothing strange. Just now you also saw that flies would take the initiative to chase blood. If there is blood on the extracted soil, the flies will definitely go towards the blood. Right?"

Yunzi already knew roughly what Lu Jinping was going to do, and nodded with a nervous expression.

Lu Jinping ordered the captain bear to cover the blood on the ground with mud, and the smell of blood disappeared. Then he walked to another clean place, put the paper bag on the ground, and then asked the captain bear to cover the gauze that caught the flies and put the flies out.

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

Seeing this scene, Yunzi's face immediately turned ashen. He turned his head and stared at his brother Yunjiu, and said with his teeth: "It was you who really hit the beggar to death?"

Yunjiu's face was pale and his lips trembled, "Oh, I didn't mean it. She was walking in the middle of the road. I called to dodge it, but she didn't let it go. As a result, I was too late to pull it, so I bumped into her."
Chapter completed!