Police Detective

　　 Bai Song, who was about to leave the office, stopped abruptly.

　　 Standing at the door of the office, Bai Song's brain is spinning fast.

What is wrong with 　　?

　　 "Eh, Bai Song, how are you..."

　　Ma Xi passed by here, and happened to see Bai in this state. I don't know what happened to him, so he came to ask Bai Song, but Bai Song directly stretched out his hand, put his left index finger to his mouth, and signaled Ma Xi not to speak.

　　Ma Xi naturally understood the meaning of Bai Song's gesture, and immediately closed his mouth.

　　 Bai Song kept this movement, and stepped back from the doorway.

　　 When Ma Xi saw this, he didn't know what happened to Bai Song, and slowly followed Bai Song into the house.

　　 Bai Song thought about everything just now, backed up the scene in his mind, slowly moved to his position, and then took out the blank paper that he had put up.

　　 I didn’t ask the blank paper...

　　 Bai Song just thought about it, and suddenly realized that there were only two handwritings on this white paper.

correct!

　　 This is something wrong.

　　 Bai Song experimented with three pens three times. There should be three different handwritings, but now there are only two!

　　Hu~

　　 The adrenaline that had just secreted a large amount of adrenaline receded like a tide at this time, and Bai sat down on the chair softly.

　　 Yes, faded pen.

　　 One of these three pens is a faded pen, or an ultraviolet highlighter.

　　 If this is the case, Scarface should have written something with this "invisible pen", but I don't know exactly what it wrote.

　　 Whether it is an invisible pen or a faded pen, how do you display it?

　　 The most common thing in our daily life is ultraviolet light imaging. This anti-counterfeiting mark similar to money, Bai Song immediately checked a lot of information on the Internet.

　　 On the website of related papers, Bai Song checked and recorded.

　　 "Does this pen disappear after writing it?" Ma Xi picked up the pen curiously and observed: "This is a bit like the one my son used to practice calligraphy."

　　 "If that's the case, it will be troublesome." Bai Song said casually.

　　 "What's the difference?" Ma Xi asked curiously?

"Look at this", Bai Song took the phone in front of Ma Xi, "What you are talking about is a fading pen for calligraphy. The mechanism is that the color-developing substance in the ink reacts with oxygen, carbon dioxide or water vapor in the air to become Colorless substance. And this reaction is usually irreversible.

For example, this photosensitizer, whose scientific name is indoline benzopyran sulfonic acid, has an open ring structure after being dissolved in water, and develops color. Under the action of ultraviolet light, it forms an invisible body with a closed ring structure and is colorless. , But, how to become a colored substance again, we don’t know... This surpasses my understanding of the level of chemistry...

　　 Unless, this is a UV pen, otherwise it's no use. "

"Don't tell me, I don't understand what the **** is this, but I understand it, that is to say, buy a small ultraviolet laser light and try it now, and you will know the end." Ma Xi said: "This is simple, what we do The stationery store at the door sells it. I'll buy one for you in a moment."

　　 Unknowingly...Ma Xi started to think of himself as a soldier and Bai Song as a police chief...

　　 "No need..." Bai Song was a little embarrassed: "I just go."

　　 After finishing speaking, Bai Song didn't think much anymore, just put the things down and ran out by himself.

　　Ma Xi watched Bai Song run out, thinking that this young man was still sensible. He knew he was rushing to do this kind of thing, but when Ma Xi was about to leave, he suddenly found that Bai Song hadn't cleaned up his things, dare you to let him take care of it?

　　 Forget it, watch the house, Ma Xi didn't bother to touch these things, so he sat quietly waiting for Bai Song to come back, he also wanted to see the ending.

　　 Soon, Bai Song ran back, hundreds of meters back and forth, Bai Song saw sweat on his head.

　　 "I hope it works, if it's a pure faded pen, it will be troublesome." Bai Song held a small toy ultraviolet lamp.

　　 Baisong carefully looked horizontally and obliquely at the opened pages of the book. Such careful observation will reveal that there are indeed traces of writing on the paper, but there is no color.

　　 After being irradiated with ultraviolet light for a long time, there was no word. Bai Song continued to take pictures, but still no words.

　　 Bai Song took out a RMB, took the lamp to shine, but found that the anti-counterfeiting label on it is clearly visible, so this small lamp is not a problem, which means that this is not an ultraviolet highlighter.

　　 "Can't you?" Ma Xi asked.

"Well, no, but I can see that there are indeed some words written in this book, but it is gone. It is probably a faded pen. I don't know what this scarface wants to express." Bai Song pointed to the book. Some handwriting marks.

"Are you sure there is a word?" Ma Xi also saw what Bai Song meant. "Then don't worry. There is my old classmate on the handwriting appraisal of the City Criminal Science and Technology Institute. As long as he has written the word, it will be handed to him. problem."

　　 "Is this okay?" Bai Song was a little surprised.

　　 "Professional things are left to professional people. Did you forget about this?" Ma Xi felt a lot more comfortable when he saw that Bai Song didn't understand. I have to say that it is a very happy thing to educate Bai Song.

　　 Bai Song nodded, expressing understanding.

　　Modern case-solving is the result of cooperation from all sides, and with the development of science and technology, technical means are becoming more and more important. It only involves confidentiality reasons, and Bai Song doesn't understand many technical methods.

　　 There is a case filing procedure, and the handwriting verification procedure is not difficult. Bai Song habitually handed the matter over to Ma Xi.

　　 After Ma Xi agreed, he started to go through the formalities, half of the formalities...

　　 suddenly found out?

　　? ? ?

　　 Who the **** is the sheriff? Who arranges who to work? This is...

　　 Is this a quilt routine...

　　 Bai Song didn't think so much, he has other things to do~www.novelmtl.com~ It's not far away from the Dabei Market to the Dongsanyuan. This is why Scarface, Fei Ming and others live here, after all, these people don't care about the housing environment.

　　 Bai Song parked his car at the gate of the Dabei Vegetable Market, and walked slowly towards the East Third Courtyard.

　　 On the way, Bai Song looked around and quickly saw a book stand.

　　 This is what Bai Song is looking for. If the scene is reproduced, combined with the cross-analysis of the various clues of the authenticity that are currently mastered, there can be roughly such a context.

　　 1. There is a suspected tomb or "treasure" place, located near Dashan City, Dashan Province;

　　 2. Fei Ming, Fei Peng and others knew about the matter and discussed the matter with Scarface, but did not reach a specific agreement;

　　3. Scarface did it by himself and abandoned all these people, but these people kept secrets about it;

　　4. Scarface has done some research on this matter, and may have bought some messy books, and also has some plans of his own;

　　 5. Scarface was ready not to come back, and took away all his belongings;

　　 6. Scarface is missing.

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