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Chapter 326 Phenolphthalein!Phenolphthalein!
Chapter 223 Phenolphthalein!Phenolphthalein!

"On this bank note, only the smell of alcohol can be smelled, but there is no other smell, which means that either alcohol can write invisible characters, or other substances that can write invisible characters are colorless and tasteless, but I have never I have never heard that alcohol will show special properties when it encounters something, so it means... there must be another substance dissolved in alcohol, and it is colorless, odorless, and invisible!"

Lin Xiaoyao kept pacing back and forth in the room, looking more and more excited. Fortunately, he was a student of science and engineering, and he was very good at science in high school, otherwise he really couldn't think of any substances that could be dissolved by alcohol.

"It can be invisible, but it's not always invisible. Otherwise, how do you know what the information is? This means that when something encounters this special substance, it will undergo physical or chemical changes, making the invisible substance no longer invisible... ..."

Lin Xiaoyao kept thinking, and various chemicals kept appearing in his mind. Suddenly he stopped, his eyes lit up, and a smug smile appeared on the corner of his mouth.

"It's a gamble! I hope God will be on my side!"

Lin Xiaoyao pushed open the door and shouted loudly, "Come here, come here!"

"Master Lin" Zhao Han, who was instructing Jin Yiwei to clean up not far away, heard Lin Xiaoyao's call and hurried over.

"Zhao Han, go and buy me some caustic soda, come quickly." Lin Xiaoyao ordered directly.

At this time, caustic soda has been discovered, but few people use it in real life. Except for making gunpowder, caustic soda is not used at all.

So when Zhao Han heard that Lin Xiaoyao asked him for caustic soda, he was very confused and didn't know what Lin Xiaoyao was going to do, but even so, he didn't hesitate at all, agreed and left in a hurry.

As soon as Zhao Han walked to the front yard, he met Bao Zheng and his party. He hugged Bao Zheng and left in a hurry without saying anything.

"Where is Mr. Lin?" Bao Zheng asked Ming Wenjin, who was directing everyone to clean up the Jinyiwei Yamen.

"Master Lin is in the last room of the wing. Let me take Master Bao there." Ming Wenjin said quickly when he saw it was Bao Zheng.

Bao Zheng shook his head, indicating that he could go there. He asked Zhan Zhao and others to stay and help, and he went to the wing where Lin Xiaoyao was.

Bao Zheng knocked on the door and said, "Master Lin, it's me, Bao Zheng."

Lin Xiaoyao heard Bao Zheng's voice, stood up quickly, and opened the door for Bao Zheng.

"Brother Bao, you still call me Lord Lin. We are a family now, so we can just call me Xiaoyao in the future." Lin Xiaoyao welcomed Bao Zheng into the room and said with a smile.

Bao Zheng also nodded. Regardless of the reason, at least they are now on the same rope, and the pressure on each other is not small. Now is the most difficult period for Jin Yiwei, and they can be called brothers in need.

"Master Lin... Brother Xiaoyao fought with Confucianism this morning and offered advice for the country. I also heard about it. Bao Zheng was also very surprised to hear about the strategy of governing the country. Compared with Brother Lin, Bao is still ashamed of himself." Ah!" Bao Zheng said in admiration after taking his seat.

Lin Xiaoyao hurriedly waved his hand and said, "Brother Bao, don't praise me. It was just a temporary idea. If I don't shock those ministers, things will not be so easy for Jin Yiwei in the future."

Bao Zheng also nodded understandingly. He would naturally understand what Lin Xiaoyao said, and he was originally a member of the First Prince's lineage. Even the First Prince was very reluctant to take the position of deputy commander. One can imagine the prejudice.

"Brother Lin, I just saw Zhao Han going out in a hurry. Is there something urgent?" Bao Zheng didn't know whether he was deliberately changing the subject or whether he really had this problem.

Lin Xiaoyao smiled mysteriously and said, "Brother Bao, believe me, there may be clues soon..."

…………

Half an hour later, Zhao Han finally brought the caustic soda back.

Since ordinary people don't need caustic soda at all, it is difficult to buy caustic soda in the market. Zhao Han relied on his relationship and finally found a seller to buy the caustic soda Lin Xiaoyao needed.

"Brother Lin, is this caustic soda?" Bao Zheng looked at what Zhao Han brought back with some doubts.

"Brother Bao is really well-informed. Yes, this is caustic soda...Zhao Han, find a basin and dissolve caustic soda in water. Remember not to put too much caustic soda, it is too hot."

Lin Xiaoyao still refused to explain his intentions to Bao Zheng, being mysterious.

Bao Zheng saw that Lin Xiaoyao refused to explain clearly, although he was very curious in his heart, he could only wait to see what Lin Xiaoyao was going to do.

After Zhao Han dissolved the caustic soda, Lin Xiaoyao took out the bank note that smelled of alcohol, shook it at Bao Zheng, and immediately threw the bank note into the caustic soda under Bao Zheng's suspicious gaze. in solution.

"Brother Lin, what are you doing?"

Bao Zheng was shocked when he saw this. Although he didn't know what Lin Xiaoyao was doing, he still knew that the banknote was an important piece of evidence. Lin Xiaoyao soaked the banknote in water, which was obviously to destroy the evidence.

"Brother Bao, don't panic, just take a look!" Lin Xiaoyao had a confident smile on his face, and he stared at the bank note intently, as if he was sure that something would happen.

Seeing Lin Xiaoyao's self-confidence, Bao Zheng thought of Lin Xiaoyao's unexpected resourcefulness, and finally chose to trust Lin Xiaoyao.

"The heavens are spirited, the earth is spirited, the chemistry teacher will show up soon! Change color, change color, change color, teacher, please don't trick me!"

Lin Xiaoyao looked extremely confident on the surface, but in fact he was very nervous and his palms were sweating. After all, this was just his inference. Who knows if the Xixia people will use this method to fool people like those crooks.

But at this moment, Bao Zheng's eyes widened suddenly, and he looked at the silver bill in the caustic soda solution with disbelief in his eyes.

Lin Xiaoyao's eyes lit up, and he was secretly relieved, the chemistry teacher really didn't lie to me!If you learn physics and chemistry well, you won't be afraid even if you time travel!

Rows of red characters slowly appeared on the bank notes in the caustic soda solution, and the characters became more and more red, just like the blood, and became more and more clear.

"This... this, is this a miracle?" Even someone as smart as Bao Zheng was a little dumbfounded. Chemistry has not yet become a systematic science at this time, and no one studies these things at all, but Bao Zheng is It's normal for a scholar to not understand.

"Hey, Brother Bao, this is not a miracle, it's just a small chemical reaction..." Lin Xiaoyao took out the bank note with handwriting from the caustic soda solution, blew it lightly, and said with a proud smile : "Phenolphthalein! Phenolphthalein! I knew it was phenolphthalein!"

PS: This is a very simple chemical experiment, phenolphthalein will turn red when it meets alkali!

(End of this chapter)