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Li Ming nodded. "That's true. How does that relate to the ghost moving the shadow? Can a ghost make the light change so quickly? Or does it move in a circle like we do? Could it be that it's directly blocking the light, causing the dynamic visual effect Jiang Yan saw?"

"I don't think something's right," Xia Fei said. The others looked at him, and Xia Fei shrugged. "Don't look at me. I just feel something's wrong, but I can't figure out what it is. I just think that Jiang Yan mentioned force at the beginning, so Jiang Yan must think that ghosts are related to force, and it shouldn't be this dynamic visual effect caused by the changing light."

"Yeah." Jiang Yan nodded. "The object hasn't changed, but the angle of the light has changed. Actually, it's because the flashlight has been rotated in our hands that the angle of the light has changed. This is caused by moving the light source. But if I use a mirror, that can also cause the angle of the light to change. This is caused by the refraction and reflection of light."

"It's indeed a change. Whether it's moving the light source or refracting the light through a mirror, it's a change in light in a certain space."

Xia Fei snapped his fingers and tilted his head to look at Jiang Yan, his eyes full of excitement. "So, you think that ghosts change shadows by changing the spatial changes of light, and you just mentioned a lot of ghost stories where ghosts can make things move without wind, which means they apply force."

Jiang Yan met his almost jumping gaze and nodded, confirming his meaning. Xia Fei became even more excited when he saw that his idea was correct. As he spoke, he looked at his good brothers Xu Weiran and Liming.

Li Ming continued, "So Jiang Yan believes that ghosts can alter the spatial variations of light, and can also exert force to cause things like windless movement. Assuming these are all exerted 'forces', we can divide them into two types. The first type is unknown, and when applied, it can cause spatial variations in light. The second type is what we usually call the force that makes objects 'move'."

As if passing on the topic, he became more excited as he spoke, as if the answer to this device was within reach. "So, according to Jiang Yan's idea, we've used physics to study a lot of common 'forces' that we know and study. The force in this device should be the kind we don't know about, a force that can cause spatial changes in light when applied to it. It has different effects on different objects! And when applied to the iron sheet, it can make it softer!"

Xu Weiran continued, "If Jiang Yan is talking about a kind of force, then this force can cause changes in the space of light, and it can also have the effect of the 'force' we are familiar with. The change in space and the force applied..."

At this point, a sudden flash of inspiration struck him, and he subconsciously pulled out two key words. Although his face was still a little confused, his eyes were extremely bright, full of curiosity. His tone was hesitant but sounded resounding:

"Space, force?"

"Spatial force! What the hell is this? It sounds like such an awesome force! Does it really exist? Can ghosts use this force? And since we can't normally see ghosts, maybe ghosts can use their power to arbitrarily change the spatial changes of light, making us invisible to them."

Xia Fei sat down as he spoke, then pulled out his unfinished draft book. Suddenly, he had a new idea for the device. He drew a diagram of the device's structure, wrote calculations, and muttered to himself:

"If this force really exists, then ghosts really do exist. Why is the success rate of this device only 5%? Is it because there are too few ghosts around us? Should we find a ghost summoner to help us with research and experiments?"

Xu Weiran suddenly realized: "If that's really the case, can I see any ghost I want?"

Li Ming: "? No, you two should behave normally. One of you wants to find someone to summon ghosts, and the other wants to see ghosts. Sit down and listen to what Jiang Yan has to say."

Jiang Yan had already sat on the sofa. He then glanced at Lu Ze, who was still standing there. Lu Ze seemed to be in a daze.

"Um, why are you standing? We're all sitting down. Lu Qinghuan will be back soon. You should sit down and wait for her."

Lu Ze came back to his senses, and the shock in his heart was beyond words. Regardless of whether their speculation today was true or false, the fact that they gathered together to study ghosts really made him feel that some people's brains were really different.

It was as if they were making something a reality.

He sat down suddenly. "According to the force you're talking about, let's call it spatial force. If this spatial force is used by ghosts to make people invisible, then why don't they even let their families see them? If they can see, then wouldn't it be as if they were still alive?"

In his opinion, this is a huge loophole.

"Is it possible that we actually saw them, but we just didn't see them in our consciousness?" After this reflection and discussion, Xu Weiran felt as if his mind had suddenly been opened. "Can you see light? There is light everywhere in life, but who can say that they have seen the specific form of light?"

"There is also air. We all breathe it. Has anyone seen what air actually is?" Xia Fei also said.

Li Ming twirled a pen in his hand. It was a habit he learned from Jiang Yan, who would sometimes twirl the pen when she was bored. "Yes, because what our naked eyes can see is actually very limited."

Jiang Yan's thoughts were naturally different from theirs. She said calmly, "Since it's a spatial force, it must be related to space. We can't see ghosts, perhaps because they are not in the same space as us."

Xia Fei, Xu Weiran, and Li Ming were all stunned for a moment, and then something in their minds seemed to be opened up. They looked at Jiang Yan with their eyes widened a little, and then nodded in agreement.

"It sounds amazing, but it's not impossible!"

"So there's more than one dimension in the world, and that other dimension is where ghosts live? Wouldn't that be the King of Hell's Palace? Oh, isn't that just feudal superstition? But based on our data and inferences, it's not superstition, it's science!"

"As long as we can prove that spatial force exists!"

Everything today was ridiculous. Lu Ze remained silent. He just happened to hear Jiang Yan say that she wanted to study ghosts when he came to find Lu Qinghuan.

He usually didn't talk to his sister's friend, but when he heard this, he said something more.

I thought she was a little funny at the time, but I was surprised when she said she saw a ghost.

Now, Lu Ze felt that he was somewhat convinced by her.

Even though this time the four of them came up with this conclusion together, it was obvious that Jiang Yan had thought of this a long time ago. She even thought about it more deeply, so she came up with the theory of two spaces that surprised Xu Weiran, Xia Fei and Liming even more.