The Taoist priests were taken down, and Yuan Chun played calmly.

She picked up a little alkaline noodles again: "This is alkaline noodles, which are used in the kitchen, and they are also very common." The alkaline surface is dissolved in water to make alkaline water......"

She gracefully picked up a new pen, dipped it in some alkaline water, and scratched it on the turmeric paper with the tip of the pen, and a bloody streak appeared on the turmeric paper.

"Your Majesty, please see: as soon as the turmeric paper encounters alkaline water, it will turn red. This is a natural phenomenon that has something to do with the way of heaven, but it has nothing to do with demons and ghosts! ”

Taking advantage of the stunned opportunity of the emperor and Shui Xiao, Yuan Chun drew a cute pig's head on turmeric paper with a pen, carried the paper, and shook the pig's head against the hole: "Dao Chief, there is a pig's head on it, could it be that I caught a 'pig demon'?" ”

Dong Xuzi was gagged, and of course he couldn't answer Yuan Chun's question. Of course, Yuan Chun didn't expect him to answer.

"Poof......" Shui Xiao burst into laughter.

He had the intention to enliven a somewhat dignified atmosphere, so he joked: "Jia Shangyi, you painter...... Tsk, but I really don't dare to compliment! It's no wonder that when Shang Yi wrote down the medical book, he had to ask his father and queen mother to send another painter, because he was afraid of drawing people with a pair of big ears? ”

Yuan Chun tacitly followed his words and joked: "No." The minister is afraid that he will paint his face on his belly! "The face is painted on the belly, and the clothes are invisible as soon as they are worn, which means that they have no face to see people.

Shui Xiao understood and smiled again.

Emperor Longzheng coughed lightly, and forcibly changed the topic in extreme embarrassment: "Then when this incense ash blows up, a ghost shadow appears, what's going on?" "He felt like he didn't have the face to see anyone!

Yuan Chun took the turmeric paper with the ghost of incense ash and asked Shi Zhong to hand it to the emperor: "Your Majesty, please take a closer look, that ghost shadow is actually composed of incense ash." This is a simple trick, first using a colorless and transparent bone glue to draw a ghost on the paper. This glue will be a little sticky after drying, and the incense ash will stick a little when it is blown up, and it will naturally show a ghost! This kind of bone glue liquid is the key to it, although the minister can roughly guess the preparation method, but he can't do it for a while. If the emperor wants to understand, he might as well search for these Taoist things, and he will definitely be able to find this bone glue liquid. By the way, the Lieyang Taoist just now also had the same trick, and the emperor might as well search for it. ”

Emperor Longzheng signaled to Shi Zhong, and Shi Zhong personally led people to search the bodies of the two Taoist priests and found a lot of bits and pieces.

Yuan Chun rummaged through those things, found out all the things that the two Taoist priests had used just now, and then copied their tricks to the emperor one by one.

On the table in front of her, there were two candle stands, each with seven or eight candles. Yuan Chun dipped a brush in a carbon disulfide solution melted with white phosphorus, and put it on the wick one by one. It didn't take long for the candles to light themselves one after the other.

“…… White phosphorus burns automatically in the air, and as soon as it ignites, the wick is naturally ignited...... Your Majesty, please pay attention to the order in which I order the liquid! The order in which the candles are lit is actually the order in which I dispense the liquid. As long as you understand the mystery, anyone can do it, and it has nothing to do with the Tao......"

She put the rosin powder on a piece of paper and blew the rosin powder the candle flame, and there was a bang, and a flame burst out above the candle flame.

“…… Rosin is something that burns when it comes to fire. Grind the rosin into powder, and when it encounters a candle flame, it will naturally ignite automatically and burst into flames. This is also a natural phenomenon......"

After debunking Lieyangzi's trick, Yuan Chun picked out the other two props found on the two Taoist priests, and explained the purpose of these props to the emperor one by one. From Emperor Longzheng to the palace maids and eunuchs standing around, they were all fascinated by what they heard.

After dismantling the scam, Yuan Chun concluded: "The reason why scammers can deceive is because they know something that the deceived people don't know, so they set up a game. The reason why the minister was able to debunk the deception of these two people was because the minister knew more than them. ”

After the supreme father and son digested her words, Yuan Chun said again: "Your Majesty, the minister said that there is a lot of air in the air that we can't see, and the emperor is about half-convinced. It's a good thing not to believe blindly. The minister proved to the emperor today that what the minister said was true. ”

She took out a glass sent by Qiu Ningshuang and others, and began to make a covered cup that middle school students would make: "This glass was given by the queen mother before, and the minister has been drinking it." "Such a great opportunity, of course, she has to take advantage of the victory to pursue it, completely dispel the emperor's doubts about herself, and gain the emperor's respect and trust!

She fills the cup with water, cuts a thick piece of smooth paper into a circle slightly larger than the rim, covers the rim with the piece of paper, and turns the cup upside down. The water in the cup didn't fall at all!

Yuan Chun said: "The water flows low, it's not wrong at all!" But now that I have turned the rim down, why hasn't the water in this cup flowed down? ”

Shui Xiao replied without thinking: "Supported by a piece of paper!" ”

It was not rude for him to answer like this, but for the sake of the emperor's face. If a little girl asks, the emperor will answer, which is inevitably unorthodox, and it will be even more embarrassing if you answer wrong. If he also holds the shelf and refuses to answer, Jia Shangyi's words are boring, I am afraid that he will lose the conversation, and let this extremely rare and extremely important "preaching" end early, then the loss will be great! At that time, my father will not be happy.

So, it's better for him to hold this up!

He is an empty prince with no title and no title, and he is not very old, so if he answers something wrong on the question of "Heavenly Dao", it is not a shame. Anyway, he doesn't understand, it's a matter of course!

Emperor Longzheng couldn't help but be very satisfied when he saw Shui Xiao being so knowledgeable. He just sat there, twisting his beard and smiling, making a profound appearance. But he listened and watched with great concentration.

Regarding Shui Xiao's answer, Yuan Chun gave a thumbs up: "That's right! It's the pieces of paper that hold the water. But what is the power that holds the piece of paper? ”

Her fingers stirred lightly in the air: "It's the air in the air that we can't see!" The invisible air held the piece of paper, and the piece of paper held the water in the cup, so the water in the cup did not run down. This is not some kind of Taoist immortal method, and if you understand the mystery, everyone can do it. ”

Emperor Longzheng and Shui Xiao both had a sudden realization.

But then Shui Xiao also reached out and stirred up the invisible "air", and frowned again: "But this air is formless and substantial, how do they hold the pieces of paper?" ”

"Air is not formless! The air is real. It's just because each of them is very, very, very small, and transparent, that we can't see them. Yuan Chun smiled, and thought about how to explain the air pressure problem, "The fairy said: The principle of why the air can hold the piece of paper is the same as the principle of why the wooden block can float on the water. As for what this principle is, this involves a part of the laws of heaven and earth. These laws are still not comprehended by the minister. ”

Yuan Chun didn't bother to continue to explain, anyway, most of them didn't understand after listening to it.

She poured most of the water out of the cup, covered the rim with a new piece of paper, and turned the cup upside down. But instead of letting go of the hand holding the piece of paper, he asked: "Your Highness, guess again, this time, can the piece of paper hold the water in the cup?" ”

She also had a very tacit understanding to only ask the seventeenth prince alone, and not to say things like "please guess the emperor".

Shui Xiao continued to answer: "This time the water is less than the last time, of course I can hold it!" ”

As soon as Yuan Chun's hand holding the piece of paper was released, the water in the cup was poured out with a "bang".

Shui Xiao's eyes widened in surprise: "Why?" ”

Yuan Chun smiled: "Because there is air in the cup!" The air outside the cup will hold the pieces of paper up, and the air in the cup will also push the water down. When there is too much air in the cup, the force of pressing down and the weight of the water exceeds the force of the air holding the piece of paper, and the water in the cup will naturally pour out. ”

Emperor Longzheng and Shui Xiao couldn't help but nod their heads again and again.

Yuan Chun wiped the glass dry with a handkerchief, cut out the turmeric paper found on the Taoist priest's body into a circle slightly larger than the bottom of the cup, and stuck the turmeric paper at the bottom of the cup. Some of the alkaline noodles were poured into a wooden bucket filled with water.

"When turmeric paper encounters alkaline water, it turns red." She picked up a small piece of turmeric paper that had been cut out and stirred it in the bucket, and the scrap turned red, "Your Highness, guess again, if I put the mouth of this cup downwards and press it into the bucket." Will this piece of turmeric paper turn red in the cup? ”

Shui Xiao didn't rush to answer again, but thought about it for a while, and then said, "No!" Because there is air blocking in the cup? ”

Yuan Chun said in his heart: The son can be taught! Praise in his mouth: "Your Highness is wise! ”

She slowly pressed the rim of the cup down, into the water, and let the water overflow the bottom of the cup. After a short wait, she took the cup out steadily, still with the mouth down.

In the transparent cup, the turmeric paper at the bottom of the cup still retains its original color, and there is no sign of turning red at all.

Emperor Longzheng had a feeling of lightning and thunder in his mind: This is the "Heavenly Dao"?!

He looked at Yuan Chun's gaze, and there was a layer of fear: For such a "person who meets immortals" and "immortal named disciples" who have mastered part of the way of heaven, am I not courteous enough?!