Yao Shuqi didn't linger any longer, came out of the room, went downstairs, and went out to get on the mule cart.

Seeing Yao Shuqi's mule cart leaving the alley from the window, Qin Lao Liu turned around, first bolted the door, lit the oil lamp on the table, and then put the paper that Yao Shuqi gave him on the fire, slowly roasted it, and after a while, a row of words slowly appeared on the paper. After a while, the handwriting was gone.

These characters are very special and are not the traditional Chinese characters that everyone is used to. If anyone who has traveled through the country has seen it, they will definitely be able to recognize it, they are simplified Chinese characters.

Although it was not the first time he had seen the words on the fire, Qin Lao Liu was still shocked by this scene, and a chill of fear surged in his heart.

In his opinion, this kind of handwriting can be seen on the paper by roasting it with a fire, and it is also a special method of writing, which is definitely not something that ordinary people can know. In Qin Laoliu's cognition, those who can use this method are definitely those who need to cultivate great forces, have many great secrets, and do great things, which are equivalent to princes and princes. In order to compete for the world, they will use this high-end and secret means.

Thinking about it again, Du Jinning is also cultivating his own power, and at a young age, he speaks and does things without leakage, even an old fox like Qi Bokun who is a big official admires it, and he has a green light all the way on the road to the imperial examination, this is definitely not an ordinary person.

Isn't it that Young Master Du is the emperor's son who is in exile among the people, Qi Bokun and they surround him, are they secretly escorting him and accumulating strength for him to be the emperor?

Whenever he thought of this possibility, Qin Lao Liu was terrified, and he always felt that he knew a big secret. In addition to trembling with fear, he trembled with excitement.

If the young master Du he followed was really the emperor's son, wouldn't he be going to follow him in the future? He is a little gangster, and he can be a prince, a prince, or even a henchman of the future emperor, but he is simply hit by a pie in the sky.

If Du Jinning knew that Qin Lao Liu was so good at brain supplementation, he would definitely knock on his head and say: You think too much.

This kind of thing of writing invisible words on paper and then appearing under specific conditions is good to put in later generations and elementary school textbooks? It's nothing more than chemistry.

She could casually list several of the secret potions.

For example, use a brush dipped in vinegar, lemon juice, tomato juice, onion juice, etc. to write on white paper, and dry it without leaving a trace. To read this cipher, simply bake the paper over the fire and the brown handwriting will appear quickly. What she wrote to Qin Lao Liu is this kind of thing. Although she has not seen onions, tomatoes, and lemons in ancient times, vinegar is still quite common.

In addition, write secret letters with rice soup and display them with iodine wine; It is okay to write with phenolphthalein solution and smear it with sodium hydroxide solution to display.

If you can't find anything, you can soak one piece of paper, cover another piece of dry paper on top and write with a hardwood stick, and you can't see the words when the wet paper is dried. I put the paper in the water again, and the handwriting came back on.

These methods, there are not too many modern Du Niang.

She used this method to make tokens for Qin Lao Liu, in addition to preventing someone from using Yao Shuqi to order Qin Lao Liu to do things, in fact, it was to satisfy her bad taste, increase the sense of mystery, and by the way, deter Qin Lao Liu.

It turns out that for the ancients, who had zero knowledge of chemistry, this deterrent effect was still a bargain.

Du Jinning is a person who takes one step and sees three steps, she doesn't know what will happen in the future, and she doesn't know who she will have a conflict of interest with when she enters the court in the future. She didn't want to rely too much on the Qi family, the Guan family, or the Liang family, she had to have her own strength. So she secretly asked Qin Lao Liu to train some manpower in case of emergency.

These things can't be overstated, so when Qin Lao Liu came to Fucheng, she spent two whole months teaching him to learn simplified characters. When he learned, he was let go to the teahouse to do things.

Qin Lao Liu doesn't see tokens and doesn't do things; saw the token, the content on the paper did not match what Yao Shuqi said, and he did not do anything; Even if the content is the same, the handwriting is similar, but it is not a simplified word, and it is also not a work.

In addition, in order to prevent Qin Lao Liu from thinking crookedly, she naturally buried a secret child next to Qin Lao Liu, and Qin Lao Liu didn't know it; On the bright side, Qin Laoliu's eldest son was working as a servant by Chen's side at this time, which was a condition that Qin Laoliu agreed to when he expressed his willingness to do things for Du Jinning.

Seeing that the content on the note was consistent with what Yao Shuqi said, Qin Lao Liu rolled the paper into a ball, walked to the clean room and threw it into the toilet, and then went downstairs and ordered someone to find Wang Lao Er to handle the matter.

Half an hour later, Old Man Zhang from Qi Mansion received a letter from outside, so he went to talk to Liuyun.

At the beginning, Qin Lao Liu chose Old Man Zhang as the secret son of Qi Mansion because Old Man Zhang's son redeemed himself and left the house, and he was alone in the Qi family, and this person was still a person who saw money. He is good friends with Liuyun's father. Liuyun was angry and scolded by Qi Siyu's side, so Old Man Zhang gave their father and son some ideas to teach Liuyun how to please Qi Siyu. Therefore, Old Man Zhang is very valued by Liuyun's father and son.

Qi Siyu was full of resentment because he was pressed on his head by Du Jinning, the enemy, and only won the second place. After dropping the porcelain on the ground in his yard, he was called by Qi Yuandao to reprimand him.

He said unconvinced: "If Qi Muyuan had won the first place, I wouldn't have been so angry." But Du Jinning, why did he climb on top of me? Which onion is he? Isn't Master Pan the chief examiner? He recognized my roll, so why didn't he let me get first place? ”

Qi Yuandao also felt that Pan Yiting was not strong, otherwise, no matter how much it was, it would not be the turn of Du Jinning, who had no door and no faction, to take the first place.

However, he didn't want to burn the fire, so he had to comfort his grandson with kind words: "No matter what the reason is, the truth is already like this, and it cannot be changed." What you have to do now is to do well in the second and third exams. You are now in the top three, as long as you do well in the later exams, Xie Yuan still has hope. Don't lose your mind because of this. ”

"There is hope, there is hope, you old man will say so. At the beginning, you also said that Xie Yuan was only produced between me and Qi Muyuan. Why did this Du Jinning pop up again and occupy the first place? According to this momentum, isn't he the same as the government examination and the college examination, the top of the high school list, right? ”

Qi Yuandao stroked his beard, his brows furrowed tightly: "It's hard to say." The snipe and the clam competed, and the fisherman profited, maybe when Lord Pan and Lord Wang did not give in to each other, Du Jinning picked up a big bargain. Judging from this ranking, this is how Du Jinning got the first place. In the next two games, it is inevitable that this situation will occur again. ”

Saying that, he sighed and looked at his grandson: "No matter what, you just try to do well in the exam." Sometimes, people are not as good as heaven, and we can only do our best. ”