Infrastructure masters in the red building

"As early as the Spring and Autumn Period, Mozi conducted the world's first experiment on small hole imaging."

"He chose a dark hut and made a small hole on the wall facing the sun. When a person stood facing the small hole outside the house, an upside-down figure appeared on the opposite wall in the room."

"Why are there inverted figures?" Jia Fang opened his small science lecture hall, and the audience opposite him included: His Majesty the Emperor, Eunuch Dai Quan... and the little eunuch who was frightened out of his wits.

"Mozi believes that this is because the light travels in a straight line, the head at the top blocks the light from above, and when it enters the room, it forms a shadow on the bottom, and the feet at the bottom block the light below, so it forms a shadow. Above, an inverted shadow is formed." ①

"Behind this curtain, there are many lights, so you can think of it as a surface light source instead of a point light source." Jia Fang stretched out his hand, leading everyone to imagine that there are countless parallel rays of light directly shining on the black Cage.

"Here, when the light shines on this picture made of glass, a part of the color is naturally filtered out, and passes through this small hole, and is projected on the curtain on the other side, which is why His Majesty can see it on the curtain." Human figure—because this human figure has been painted on the colored glass in advance."

"But it is also because this is an image formed through a small hole, as Mozi explained back then, the direction of the picture and the portrait are reversed, and the picture must be turned upside down beforehand to show a normal portrait on the curtain. The minister just yelled "put down" while taking advantage of the chaos. The little father-in-law was surprised for a moment, and suddenly realized that the person in front of him seemed to be upside down, so he hurriedly corrected it - this caused the portrait that His Majesty saw on the other side of the curtain to be upside down. Come here."

"But all of them are using optical images to project images on the curtain to comfort His Majesty's heart. It is not a real 'soul calling'."

When Jia Fang concluded his statement, he also felt a little cruel.

Did he personally shatter the hopes of a sick man?

Unexpectedly, the emperor was playing with the glazed picture taken from the cage, and suddenly asked: "What do you mean—a part of the light is filtered? I just saw the appearance of 'Xiaoyuan' in color, so I will..."

Indeed, the image reflected on the curtain just now was colorful, which made the portrait look lifelike, not like a dead object painted like a silhouette.

Jia Fang immediately took out a prism from his purse, refracted the light, and selected the right angle, and seven-colored rainbow colors appeared on the black curtain in front of him.

"The white light we see in ordinary times is actually composed of light of different colors. When they pass through the glass picture, the rest of the colors are filtered out. Only the light with the same color as the picture passes through the picture, and then passes through the glass. The holes are mapped onto the curtain over there, so the reflected image retains the exact same colors as the picture."

"That is to say, the more realistic the glass painting is, the more realistic the shadow on the curtain will be." To put it bluntly, isn't this a projector?

The emperor thought for a while, and seemed to think it made sense, but on second thought, he suddenly asked in a cold voice: "Jia Fang, are you saying that I took the shadow cast on the curtain by a quack warlock as my beloved, The soul is back?"

As the emperor asked, Dai Quan, who was shrunk behind the emperor, winked at Jia Fang, and was about to kill a chicken and wipe his neck.Jia Fang suddenly remembered what the father-in-law had told him earlier, saying that he was asked to speak according to the emperor's wishes and not to oppose the emperor.

And his father Jia Daishan did tell him before, telling him not to talk nonsense.

However, Jia Fang forgot everything they told him, and now, he still insisted on saying what he wanted to say: "It is true. Your Majesty, what you saw was that the Taoist priest used the light to The principle of propagation in a straight line, the shadow cast on the curtain."

As soon as he finished speaking, the emperor suddenly coughed loudly, and Dai Quan hurried forward to support him.

Seeing the ninety-five-year-old in front of him, Jia Fang, who was originally straight, hunched down suddenly amidst the violent coughing, and felt a little bit unbearable.But no matter how cruel the facts are, he will choose to tell the truth, and he cannot let the emperor in front of him waste his life in this illusion.

"Bring the man...bring the man, I want to ask him—" The emperor coughed, but still gave orders to the people around him.

Immediately someone responded, crossed the thick black curtain and ran to the other side.In a short time, a guard rushed over to report: "Report to the emperor, that Taoist...has committed suicide. He should have taken poison himself. Now he is bleeding from his seven orifices, and he is already dead."

Jia Fang was really surprised this time: Earlier, he begged for grace for this guy, so that he would not be punished for the crime of deceiving the emperor, at least not to be implicated.

He guessed that the Taoist priest was either seeking fame or seeking money, so that both of them would not immediately seek death as soon as he was exposed, so there was still room for change.

When the emperor heard that a Taoist priest committed suicide without any abnormality, he immediately turned to the little eunuch and asked, "Tell me, what's going on?"

The little lady listened to the news and said that the priest died, she was already frightened, she fell on the ground like chaff, and said in a trembling voice: "Slave... The slave was originally on duty in this boat hall, and it was only two days, two days. The immortal master came here to do this, saying that he wanted to appease the emperor's heart, and ordered the slaves to cooperate with the immortal master to turn off and light the lamp for him..."

At this point, Jia Fang has completely figured it out: the Taoist spouting flames is not all learned street juggling, but a signal to the back, which can be seen clearly even through several curtains. Help to turn off all the lights, then insert a glass picture card on the card slot of the cage, and then turn on the lights.The emperor will be able to see the "soul" of the deceased.

Of course, the little eunuch's words were somewhat inaccurate, a Taoist priest from outside, who can persuade the palace servants to help him cover, must have other inside information, such as Zeng Xu's fame and status with money.

But the Taoist priest spent so much effort to call out the soul, once Jia Fang found out that it was "small hole imaging", he took poison immediately, which is really strange.

Jia Fang felt that the boat hall was getting more and more stuffy and depressing, and he felt impulsive and wanted to leave here.He couldn't help twitching his nostrils, and found that when he first entered the hall, the fragrance in the hall didn't seem to be what it is now.

"The other slaves don't know anything, don't know anything... Please forgive me the emperor!" The little eunuch immediately bowed down and begged for mercy after explaining his reasons.

The emperor turned his head and asked Dai Quan: "Who recommended this Taoist priest?"

Dai Quan replied, "It's His Royal Highness."

The prince recommended a Taoist priest to his biological father, and let his biological father miss women other than his biological mother? ——Jia rest assured, this is quite weird.

Unexpectedly, at this moment, the emperor suddenly bent down and continued to cough painfully. This time it was really heartbreaking, and Jia Fang once again felt that the other party almost coughed up all the internal organs.

Dai Quan hurriedly did his duty, patted the emperor on the back, and tried to make him feel better.

Jia Fang suddenly felt that something was wrong: the airtight ship hall, the emperor who was only "slightly ill" but getting weaker and weaker, the warlock who would kill himself immediately if he was found...

There is also this weird scent that lingers in the nose all the time, lingers and makes people unable to tell what the smell is.

The emperor coughed for a while, and finally coughed up a mouthful of blood. The bright red ball was spit on the handkerchief, which was very dazzling.

Jia Fang suddenly understood, he pushed Dai Quan away at once, came to the emperor, squatted down and carried him on his back, and asked at the same time: "Where is there an exit?"

Dai Quan was frightened by him for a moment, but he reacted immediately and said immediately: "The boat hall has a back door!"

He immediately took Jia Fang and rushed to the back door of the boat hall, but when he went, he found that the back door was locked and he couldn't open it for a while.

Jia put his mind to rest. He probably knew where the weakest and unstressed part of the wooden door with this structure was, so he kicked it directly.It is said that people are often very powerful when they are in a hurry, and it may be that Jia Fang kicked the part. In short, he kicked open the door directly, followed by one foot and stepped out of the room. Raised platform——In order to imitate the boat in the water, the edge of the platform of this boat hall is raised upwards, just like the side of a ship.

Jia Fang felt that his feet were weak, but with the last bit of strength, he jumped off the platform with the person on his back, and then took a few breaths of fresh air outside the boat hall.The cool air poured into his lungs, and after a while, Jia Fang immediately felt that he had finally recovered.

Jia Fang quickly turned around, checked the person on his back, and at the same time Dai Quan heard "Guard——"

As soon as he raised his eyes, he met the eyes of the person behind him. He originally thought that this person was already on the verge of life and death, but Jia Fang met a pair of eagle-like sharp eyes. His eyes were old and sharp, and he seemed to be able to understand him. Everything you want in your heart.

"What did you think of?" the emperor asked bluntly, but it seemed that the breath in his chest was touched all of a sudden, he coughed a few more times, and spat out a mouthful of blood.

But his spirit is completely different. To use Jia Fang's words to describe it, it has nothing to do with the "love brain"——

Immediately, a group of guards from the palace rushed over, pointing countless shiny swords at Jia Fang's vest, someone said in a deep voice: "Let go of your majesty, or you will be killed immediately by the sword!"

At this time, Eunuch Dai Quan finally showed up to help Jia Fang. He rushed up and pointed at the group of guards and said, "Take a knife and point at the third son Jia who has meritorious escort? You are sick!"

Guards:  …

"The assassin is in the boat hall, hurry up!"

A group of guards rushed into the boat hall, and after a while, they all rushed out again and asked Dai Quan, "Eunuch Dai, there is only one dead Taoist priest in the boat hall. Where is the assassin?"

Dai Quan said sharply, "It's that Taoist priest!"

The guards who had come so fiercely were all silent, thinking that Eunuch Dai must have them all go to the underworld to catch the assassin back?

Dai Quan continued to command: "Hurry up and find out, what is his origin, and why did he commit suicide..."

Jia Xinxin sighed: The conversation between the emperor and Dai Quan just now made it very clear that this alchemist and immortal master was recommended by the crown prince.

So a group of guards went away in silence, only Dai Quan, the emperor and Jia Fang were left outside the boat hall, sitting in the dark night.

Dai Quan looked at the silent emperor, jumped up quickly, and shouted with his male duck voice: "Sir Jia, please take care of the emperor here, this old servant will call the imperial doctor!" After speaking, he ran away.

Only Jia Fang and the emperor were left.

The emperor no longer needed Jia Fang's support, and stood up alone.He gave people the feeling that his heart was covered by a mouthful of old blood before, but now he spit out the congestion in his heart, and he felt more refreshed and at ease.He walked several steps in front of Jia Fang with his hands behind his back, and suddenly turned to face Jia Fang who was so tired that he was sitting slumped on the stone steps of the platform. He focused for a moment and said, "Fang'er?"

Jia Fang let out a dazed "hmm", he was really frightened and tired all day, his brain refused to think.

"What you said just now, the small hole forms the image, and the reflection becomes the shadow. You can see it from the books in the Xiaoxiang Pavilion?" the emperor asked in a deep voice.

Jia Fang raised his face to look at him and nodded.

The emperor also nodded, showing "I guess that's the case", and said: "You are indeed not bad. In just one year, many parts of the Grand View Garden have been restored. One hundred thousand shi of rice from Daoxiang Village was sent to Beijing for emergency treatment, and all the books in Xiaoxiang Pavilion were returned. You have, Xia Shengshen is extremely afraid of the theories handed down from you, not to mention that the Yujiang Blood Plague may be wiped out because of you, blessings spread all over the world..."

Jia Fang was shocked: the other party knew everything he had done.

"...Although this garden has never given you half of the benefits, you have always been high-spirited, just keep cultivating the garden." The emperor said in a daze, "I don't have a son like you..."

Jia Fang looked up at the other party, and felt that it was not a problem for him to be paralyzed on the stone steps while the emperor was standing, so he tried to stand up, but his legs didn't work, and he was still shaking.When the emperor saw him, he asked him to sit still, don't be brave.

"So, do you believe in a soul after death?" the emperor asked suddenly.

Originally, Jia Fang was an absolute standard materialist who believed [-]% in death and soul extinction, but this couldn't explain how he came to this time and space.

So he nodded with his brain half-stopped: "Maybe there is!"

"Do you think I did something stupid today?" The voice of the question was a bit cold.

Jia Xinxin was thinking to himself: Although there are precedents for this "recalling of the soul", it is indeed... quite silly.

But in front of this person, if he still answers like this, then he will be the number one fool in the world.

So Jia Fang shook his head and said: "Everyone has the feeling of longing. This can only prove that His Majesty is a true emperor. If I am the soul that Your Majesty misses, I would like to find a way to tell Your Majesty. Take care of the dragon's body, and don't hurt yourself by being pregnant."

He felt that this answer was quite clever. It not only avoided the stupid question of "whether there are" ghosts, but also persuaded the emperor in front of him not to "love the brain". Body, check out these bad things in front of you.

Who would have thought that when the emperor heard it, his face turned gentle immediately, and he looked up at the starry sky: "I believe it..."

"But I would rather believe that what you said just now was what Xiao Yuan said to me through your mouth."

Jia Fang secretly smiled wryly, thinking: Ms. Xiaoyuan, I hope you think the same way.However, your vested emperor, His Majesty, should be a gentle and good person. You probably think so too, right? !

"If Xiaoyuan has a spirit in the sky, I don't know how happy I will be to see you here today." The emperor continued, "Fang'er, it's been 15 years, and you have grown so much."

Such a gentle sentence, but when Jia Fang heard it, his ears buzzed as if he had been struck by lightning——

what's the situation?let go?Ms. Xiaoyuan, could it be his...

His biological mother was originally Jia Daishan's concubine. It is said that her surname is Qian. How could she have something to do with the emperor?

Jia Fang's brain started working again, and immediately calculated seven or eight possibilities, and selected three with higher possibility for analysis: the first one, Jia Daishan married the emperor's cherished relatives, and gave birth to himself— —But how could the royal relatives be concubines, don't even think about it;

The second type, Jia Daishan married Qian and gave birth to himself, but Qian was taken by the emperor - so the emperor greened his father;

The third type is that the Qian family is the emperor's sweetheart, but Jia Daishan seized his love, married her away, and brought her into the house as a concubine—this is his father's love for the emperor.

But no matter which one, it can't explain the strange and unspeakable state between Rongfu and the royal family.Especially between Jia Daishan and the emperor, no matter who gets married, it should be absolutely difficult to maintain the current relatively harmonious relationship.

Jia Fang couldn't help but think of the day when he visited the garden. In Daoxiang Village, the emperor seemed to have something to say to himself, but because Jia Daishan called Jia Fang's name outside the courtyard wall of Daoxiang Village, the emperor was depressed. No more words were spoken.

At that time, Jia Fang had an intuition that His Majesty the Emperor seemed a little jealous.

But since this hypothesis was put forward, Jia Fang has always felt that it is impossible. He has never been so narcissistic that he feels that he can make two middle-aged men jealous for him.

Now... Jia Fang suddenly felt that it might be possible.

"Your Majesty, Your Majesty...the imperial physician is here." Dai Quan's voice sounded in the distance, followed by the chief chamberlain running over, and an old imperial physician carrying a medicine box and wiping beads of sweat from his forehead.

"Your majesty, I'm late! Your majesty... is it okay?" The old doctor ran to the ground panting, and asked nervously, "How does the dragon body feel?"

The emperor said in a deep voice: "I'm fine, I vomited a couple of mouthfuls of blood earlier, but I feel much more refreshed!"

The old doctor was so frightened that his calf trembled: I have already vomited two mouthfuls of blood, so what are you talking about?Hurry up and invite the emperor to sit down and appraise the dragon veins.

Who knew that the emperor swayed his chin lightly: "Show him first."

In front of the old doctor, a young man was lying on the cold platform of the boat hall, seemingly unconscious.In front of him, the sea water patterns paved with cobblestones and tiles on the ground are rippling around in circles.

Jia Fang has this problem: if his physical condition is not suitable, or his psychological condition is particularly resistant to certain things, he will think of some ways to avoid facing the problem immediately and directly.

For example, last time he played "Lamp Escape" in Ruyiju, this time he played "Dizzy Escape" in front of the respected Ninth Five Lord.