Liu Che was a little confused for a moment: "The art of studying things? What is that?"

Liu Tan was also bewildered. He remembered that the term "ge wu" had already appeared in the Western Han Dynasty. He had used "ge wu" because he was worried that the term "physics" was too unfamiliar, and he was worried that Liu Che would not understand. But he didn't expect that Liu Che still didn't know it?

Liu Tan thought about it seriously and remembered that the word "ge wu" appeared in "Book of Rites", also known as Xiao Dai Li Ji, which was compiled by Dai Sheng. Dai Sheng and his father Dai De once studied "Book of Rites" with Hou Cang. The birth and death years of these people are uncertain.

However, Hou Cang once served Xiahou Shichang, and Xiahou Shichang was valued by Emperor Wu of Han only after Dong Zhongshu's death and was chosen as the Taifu of King Changyi. From the time he became the Taifu of King Changyi, Xiahou Shichang began to set up schools for the children of his clan to study.

Dong Zhongshu had died before Liu Tan traveled through time, but it is not certain whether Xiahou Shichang has been selected by Liu Che as the Taifu of King Changyi. However, judging from the relationship between the characters, "The Book of Rites" should not have appeared yet.

Liu Tan's mind raced, and he could only cough and say, "Gewu means to explore the laws governing all things."

Liu Che didn't quite understand why he had to go to the fairyland to study the laws of all things, but what Liu Tan said must have made sense.

Liu Che simply asked: "In your opinion, how should it develop?"

Liu Tan: ...

Damn it, he was too excited just now and said everything, but the problem is that he doesn’t know how to develop it.

Nowadays, the study of things is not systematic at all!

Liu Tan suddenly had an idea and said, "I know that the emperor advocates Confucianism, but I need to think deeply about whether to dismiss all other schools of thought."

Liu Che couldn't help but frown when he heard this. The fundamental reason for following the footsteps of immortals was to pursue immortality, but all this was achieved on the basis of consolidating his ruling position.

If someone were to try to shake his centralized rule now, he would immediately wake up and start thinking from all angles about whether this person had other motives.

This is also Liu Tan. He has nothing to do with the various schools of thought, and he is on the heavy side of the scale in Liu Che's heart. Otherwise, if other people said this to him, he would get angry.

Even if it was Crown Prince Liu Ju, it would not work, because Liu Che would subconsciously wonder whether Liu Ju was influenced by someone.

On a deeper level, the crown prince is the heir chosen by the emperor and an extension of his will. If the crown prince disagrees with the emperor's political views, it will plant a thorn in the emperor's heart, and when other things happen, he may want to depose the crown prince.

Liu Che glanced at Liu Tan and said, "You are still young and don't understand. Don't talk nonsense."

Liu Tan felt chilled by his look and instantly felt that he was really too arrogant to dare to say that Liu Che was wrong.

Liu Tan decisively shut up. Liu Che drank a sip of honey water and looked up at him: "Continue."

Liu Tan: ...

What are you continuing? Didn’t I tell you not to talk nonsense?

However, he soon understood that Liu Che wanted him to continue talking about how to go to the "immortal world", but to skip the part about "abolishing all schools of thought and respecting Confucianism alone".

But... it's not easy to skip it. If you really want to develop the study of things, the Mohist school cannot skip it.

Liu Tan didn't know much about the ancient study of things. He only knew that the Mohist school and the Gongshu family had been studying the study of things for generations, and both schools had more things to say about the study of things.

Liu Tan needed the records of these two schools to judge the level to which the study of things had developed, so that he could think more systematically about how to develop it.

This is also a process of sorting out the system. Liu Tan has always believed that the scientific and technological level of China was top-notch in many periods of its history. There are many reasons for its later lag, but the biggest reason is that the system was not formed, and too few people took this seriously.

The most important thing is that those who study these things are generally looked down upon, and may even be considered to be doing menial work. Those who can persevere are those who truly love it.

Seeing that he was so confused and speechless, Liu Che had no choice but to say, "Forget it. Just leave the Weiyang Palace and don't mention it again. If I hear it..."

Liu Che didn't finish his words, but this kind of threat is always more frightening than saying it clearly.

When Liu Tan heard this, he knew that Liu Che had given him another break. He suddenly had an idea and said, "I understand what your Majesty means, but I mean that we can take the essence and discard the dregs."

Liu Che was a little surprised: "Huh? Let's talk about how to go."

Liu Tan said: "Only use their useful aspects and ignore the useless ones."

Isn't Liu Che worried that other schools of thought might easily undermine the emperor's prestige and ruling power among the people? Then just ignore their political views.

Liu Che immediately laughed: "Do you think you are the only one who knows this truth? Some people's appetite is insatiable. Well, let's not talk about this matter anymore and focus on studying things."

Liu Tan swallowed all the words he wanted to say, scratched his head and said, "In terms of the study of things, only the Mohist school is actually useful. Oh, if the Gongshu family still exists, then of course it can be used as well."

Liu Che said thoughtfully, "The Mohist school and the Gongshu school... do have some truth to them."

Although Emperor Wu of Han was promoting the abolition of all schools of thought, in fact these two schools did not completely disappear. After all, the implementation process takes time, and the things made by the Mohist school and the Gongshu family are indeed useful. For example, this palace lantern is actually the work of the Mohist school.

When Liu Tan heard Liu Che say this, his eyes suddenly lit up: "Anyway, just use them to make things that can lead to the fairyland, and don't worry about anything else."

Liu Che glanced at him and said, "You know what's going on in your mind. These matters...you go and handle them."

Liu Tan was immediately delighted. He had no idea how far the Mohist and Gongshu schools had come in their research on the study of things, but he finally had someone to help him. At least… these two schools had some basic knowledge, right? Were they much better than those craftsmen?

Liu Tan immediately said, "Then I will gather some men when I return."

Liu Che asked, "How long will it take?"

Liu Tan was stunned for a moment before he realized that Liu Che was asking how long it would take to make the finished product.

He whispered, "I don't know either. I'll see first."

He felt a little guilty as he spoke. If he wanted to go to space, he had to at least be able to build a rocket. With the current level of technology, he might not even see a rocket shell in his lifetime.

First of all, he is not a talent in physics and chemical engineering. Secondly, even if he is, it is impossible for him to speed up the timeline so much by himself, so even if Liu Che waits for his whole life, he probably won't be able to wait.

Thinking of this, Liu Tan felt a little guilty for fooling Liu Che.

Liu Che did not urge him. If seeking immortals was so easy, he would have seen them long ago. He had been looking for immortals for many years since he ascended the throne, but he had not even found a clue. Now at least he had some hope.

Liu Che said, "Since this is the case, the Gongshu family and the Mohist school each have their own strengths. It would be best if you were not biased when selecting people."

Liu Tan was a little surprised as to why Liu Che said that, but he still agreed honestly: "Yes."

After saying this, Liu Tan naturally took his leave.

Liu Che looked at Liu Tan's back and raised his lip slightly. The Gongshu family and the Mo family were sworn enemies. Whenever they lived in the same room, they would inevitably fight. Want to influence his son? Let's fight it out first!