[Conan Doujin] Let's become smaller together · Part 1

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"Quick, quick..." Knowing that the commotion just happened was too loud, Conan hurriedly urged everyone to leave the place.

The drunk guard was frightened by the incident of "the man who had been chasing him for a long time suddenly disappeared", so he asked for two days off, unfortunately today is the second day.Although the guard who was exchanged was also confused, he was not drunk after all.With such a big movement, he will definitely come and take a look.God pray that guy isn't around...

After successfully lurking into the campus, everyone let out a long sigh of relief and leaned against the corner to rest.

Everyone started to take off their shoes in a rustling manner, and put on the sock covers that Yuantai brought, so as not to hurt their feet by some small debris on the ground or make too much noise.

After wrapping the shoes in plastic bags and putting them in their backpacks, they climbed in through the open windows one by one in the afternoon.

"Hey, is the first thing you want to go to is the cooking class?" Conan asked.

"Of course!" Mitsuhiko waved his fingers, and then took out a small spray, "In order to let Conan-kun understand what I said more intuitively, I also specially brought the luminol reagent!"

"Hey, haven't we already tested it once? How can we test it again?" Yuantai obviously didn't know much about the luminol reagent, and thought it was an ordinary chemical reaction, so he asked.

"That's not the case." Hattori answered quickly, "Luminol reagent is a drug that can detect traces of blood, but it does not react with blood. Luminol reagent uses a strong oxidant as a catalyst to react by itself, and the blood's The active oxygen carried in hemoglobin is one of the catalysts. As a catalyst, the substance itself will not react, so even if you pour a large bucket of luminol reagent on it, you can still use the luminol reagent to test after it dries up. Bleeding."

"That's right, and the traces of blood can still be detected after decades, so if someone was killed in this classroom decades ago, the blood left by him can still be used by Rumi It was tested by Nuo. Furthermore, bleach can also cause the luminol reagent to react, although the reaction speeds of the two are different, but sometimes professionals may not be able to tell the difference." Conan glanced at Mitsuhiko and said.

Therefore, the exaggerated blood traces in the classroom may also be left by the children who cut their hands countless times over the years, rather than being caused suddenly in the past few days.Furthermore, if someone has cleaned the classroom with bleach, within a few days, no matter where the classroom is sprayed with luminol, there will be signs of light.

Well, but the home economics classroom is cleaned once a month. It is now the beginning of the month, and there are still ten days before the last cleaning in the middle of the month. The interference of bleach can basically be ignored.Conan thought.

While Conan and Hattori popularized knowledge to the children, they answered Mitsuhiko's occasional high-level questions. Gradually, they had reached the fourth floor.

"Mo... there is still one floor to go..." Yuan Tai wiped the sweat from her forehead.

He was so tired after carrying a lot of things up the stairs!If I had known earlier, I would not have brought so many iron things, the schoolbag is so heavy...

"Come on Yuan Taijun! We'll be there soon!" Ayumi cheered him on.

As the only girl, her schoolbag was carried on Conan's shoulders.She was very happy to reduce the weight, but she still consciously helped the injured little brother share part of the weight.

She is my sister~!

"It's almost here, everyone be quiet." Conan ordered.