Rushed into the main hall quickly, and walked straight towards the wall where the 'ghost' appeared, different from the embarrassment when he just came in, his scalp was numb and numb, this time because he already had eyebrows in his heart, Zhao Chen's heart was full of curiosity.

The picture on the wall is still there, as if it were projected by a projector. However, it was different from what he saw just now, at this time, although there were still palaces on the screen, there was no one in front of the palace.

"Hahaha, that's true!" When Zhao Chen saw such a scene, his heart was immediately relieved, and he stood in front of the picture of the East Palace Palace reflected, and raised his head and couldn't stop laughing.

After laughing enough, he lifted his robe again, ran out of the main hall quickly, and came to the door of the main hall, and suddenly pointed to a guard not far away, and immediately asked the guard to stand in front of the gate of the East Palace quickly, he wanted to further confirm this fact.

The guard who was pointed at by Zhao Chen hesitated for a moment, looked at His Majesty Li Er not far away, and saw that His Majesty nodded slightly, so he walked towards the East Palace without hesitation.

Seeing the guard standing in front of the gate of the East Palace, Zhao Chen immediately turned around again and entered the main hall.

Quickly came to the wall, and sure enough, I saw that there was no one in front of the palace just now, and at this time, there was indeed an extra figure with a shadow, and if you carefully distinguish it, you will find that this suddenly extra figure is the guard.

Now that it was finally confirmed, Zhao Chen's mood became extremely good, but it was just a small hole imaging, a rare natural phenomenon, in a specific environment, light reflected the object in front of it on the wall through a small hole.

This kind of experiment has been done by primary school students in later generations, and in history, the Mohists have also done this kind of experiment thousands of years ago, but at that time, Mozi proposed that it was a shadow, not an image, but the principle was the same.

Later generations of cameras and cameras were invented by imaging small holes. Grandma's, it's just a small hole image, so that Lao Tzu almost lost his soul just now, shameful!

After completely understanding the truth of the matter, Zhao Chen immediately turned around and walked outside the hall, Li Erchangsun and the others were still anxiously waiting outside the door at this time, and they had to be relieved as soon as possible.

"Alas!" A sigh suddenly came from behind him, and Zhao Chen looked back in horror, only to find that there was no one in the hall, and it was empty. But just now he clearly heard clearly, and someone behind him did sigh, could it be an illusion?

After looking around again and finding that there was no figure, Zhao Chen immediately shook his head suspiciously, and walked towards the outside of the hall, this time deliberately paying attention to the movement behind him, but he was disappointed that no sound came.

Li Er stood in the distance with his hands behind his back, staring at the door of the main hall without blinking, but compared to before, Li Er's expression at this time was less gloomy.

He saw Zhao Chen's reaction just now, especially when he heard Zhao Chen's laughter in the hall, it was obvious that this kid had found a way to crack the ghost.

The ghost has been appearing in the main hall for four or five days, and in the past few days, it has been rumored in the palace that it is the soul of the built that is worshipped.

The order has already killed a group of people who create rumors, but this kind of thing, as long as the ghost of the main hall is not broken for a day, this kind of rumor will not disappear, and it will be known to everyone by then!

The eldest grandson on the side was also like Li Er, looking at the door of the main hall with earnest eyes, just because he saw Li Er leaving gloomily, he was sad for a while, and there was still a crystal teardrop on his face at this time.

Li Er saw the teardrop on the eldest grandson's face, smiled gently, raised his thumb and gently wiped it away for the eldest grandson, and then the couple looked at each other and smiled, looking at the hall tacitly.

At this moment, I saw Zhao Chen's figure Shi Ran walking out of the hall, and he looked at Li Er proudly and said loudly: "Your Majesty, Weichen already knows what's going on, this phenomenon is actually rare, Your Majesty, don't you plan to come over and have a look?" ”

The eldest grandson beside Li Er had just felt a little relieved that Zhao Chen had broken the ghost shadow of the hall, but when he heard Zhao Chen's words, his face turned cold, and a trace of anger immediately flashed in his phoenix eyes.

Knowing that the hall is dangerous, but still putting His Majesty in danger, it is really his heart that can be punished!

However, when Li Er heard Zhao Chen's words, his brows furrowed slightly, and the next moment he suddenly burst out laughing, and said very domineeringly: "It's a rare phenomenon, so how can I miss it!" ”

As he spoke, Li Er had already walked towards the main hall, and the eldest grandson beside him grabbed Li Er's hand, but he didn't want to be held tightly by Li Er, and lowered his voice and said something in the ear of the eldest grandson, and then the eldest grandson's frowning brows were also relaxed, and the husband and wife almost held hands and walked to the main hall together.

Li Chunfeng looked at Zhao Chen in the distance with a complicated expression, and suddenly let out a wry smile, and then followed behind the emperor and queen, walking towards the main hall, he was actually very curious in his heart, and he didn't understand what that ghost was.

The group walked towards the main hall in a majestic manner, Zhao Chen took the lead in front of him, there was no way, although he had already said that this was a rare natural phenomenon, not some ghost.

It's a pity that this kind of thing can only be completely dispelled by Li Er and the others if they have seen it in person.

The group entered the main hall, just like Zhao Chen before, one by one suddenly felt that their scalps were numb and their whole bodies were soft, Li Er held the eldest grandson's hand tightly, although he couldn't see anything on his face, but it was not difficult to see from his other clenched fist that Li Er was actually very nervous in his heart.

It was easy to come to the wall, and when he saw the 'ghost' on the wall, his face suddenly turned pale with horror, and the timid ones were already trembling slightly like chaff, and the eldest grandson was pale, and he leaned on Li Er's body in an instant.

Not daring to delay, Zhao Chen immediately asked the guard in front of the East Palace to leave, and when the guard left, everyone was surprised to see that the upside-down figure on the screen just now had magically disappeared.

When Li Er saw this, his eyes lit up, and he looked at the picture on the wall without blinking, and suddenly felt interesting, and then called a few guards to stand at the gate of the East Palace, and as soon as those guards arrived at the door of the East Palace, several upside-down figures immediately appeared on the screen.

"Interesting! Sure enough, it's a rare phenomenon! Li Er repeated the order several times, until it was finally completely determined that what was above was only a projection, and then he laughed heartily in the main hall, and said in surprise.

Hearing Li Er's laughter, Zhao Chen simply did things to the end, and asked someone to find a huge curtain, tied to a long wooden pole at both ends, and covered the opposite wall. The small hole in the wall can't be found for a while, and time can't be delayed, it must be rushed before the sun sets, so that Li Er and the others can completely figure out the truth.

The huge curtain was covered on the opposite wall, and the original picture on this side disappeared immediately, Zhao Chen asked someone to take down the curtain again, and the picture that had just disappeared appeared on the wall again.

Oh, now I finally figured it out, it turned out to be a small hole in the wall!

The eldest grandson had already stood up straight, his face was gloomy and could drip water, while Li Er was in a good mood, swept away the gloom of the past few days, and looked up to the sky and laughed.

Zhao Chen took this opportunity to quickly explain the principle of small hole imaging to Li Er, and seeing that Li Er and the others were confused, Zhao Chen simply asked someone to find a few pieces of paper and prepare to do a small hole imaging experiment for Li Er on the spot.

What a rare opportunity! If such an opportunity is wasted, it will be damned!

By this time, the sun had also set, and the picture on the wall had long since disappeared, and several oil lamps had been lit in the main hall.

Because the next thing to see Zhao Chen do next is to do the experiment of small hole imaging, everyone has not left the hall, Li Er and the eldest grandson are sitting side by side on a soft couch, looking at Zhao Chen who is busy with experimental equipment below.

In fact, it is not difficult to do an experiment of small hole imaging, which Zhao Chen had already done when he was in elementary school.

It's very simple, find a piece of cardboard with a thickness of one centimeter, and then poke a pinhole of about three millimeters on it, then erect the cardboard, light a candle, close the candle to the pinhole, and then a reflected candle will appear on the wall opposite the pinhole.

Simple couldn't be simpler!

There was no qualified cardboard, so I could only stack a few pieces of rice paper together, carefully glue them tightly, and then poke a pinhole in it, and let the two attendants carry it in a corner and stand a little farther away from the wall.

Smiling and nodding at Li Er, who was sitting there, Zhao Chen confidently came to the cardboard with an oil lamp.

The first scientific experiment in the history of Datang was about to happen, and Li Er and his wife stared at the wall tightly, looking forward to the next miracle.

At this time, not only Li Er, but also Li Chunfeng and everyone in the hall held their breath and stared at the wall without blinking.

Zhao Chen cautiously came to the cardboard, pointed the oil lamp at the small hole, and the next moment he saw that on the originally dark wall, the light suddenly flashed, and an upside-down flame magically appeared.

The oil lamp in Zhao Chen's hand flickered with Zhao Chen's breathing, and the flames reflected on the wall also flickered and flickered, and Li Er, who was watching, looked excited, and his fingers kept tapping his thighs.

When Li Chunfeng saw such a scene, he suddenly raised his head, smiled 'ha', and without waiting for Li Er to speak, he quietly left the hall, and his back looked very gloomy.

From now on, I'm afraid that the position of Qin Tianjian will be greatly discounted here by His Majesty!