Li Er nodded when he heard Zhang Nan say this and agreed: "Qingquan, what you said is reasonable. I understand what you mean. It is better to teach people and fish than to teach people and fish. But what is this industrial foundation? You need Qingquan to explain it to me."

"The so-called industrial foundation is the general term for the industrial sector that provides basic means of production for the national economy. For example, metallurgy, coal, petroleum, electricity, chemistry, materials science, machinery and other industries are the industrial foundations." Of course, Zhang Nan didn't know these words, all of them were found by Zhang Nan using a system.

After hearing this, Li Er asked strangely: "I can still understand this metallurgy and coal, but how can I solve this problem with oil, electricity, chemistry, materials, and machinery? I really don't know what these mean."

"This is the material science." Zhang Nan finished speaking, pointing to the airbag floating above. "The definition of material science is broad. The material of this airbag is related to material science, silk is also related to material science, and the clothes we wear are also related to material science. As long as it is not originally found in heaven and earth, the materials manufactured by artificially are related to material science. Why is it called the industrial foundation? Because it is closely related to our lives, and we use machinery in production." This is only Zhang Nan's own understanding, and Zhang Nan himself doesn't know if it is right.

"But where is this oil?" Li Er continued to ask.

"Petroleum? How to explain this? Your Majesty, have you ever seen something dark brown and extremely sticky, but it can still be lit?" Zhang Nan thought for a while and described the appearance of oil to Li Er.

"This... I wonder if Qingquan is talking about tinea oil?"

When Zhang Nan heard that Li Er had seen him, he opened his mouth and said, "Your Majesty, have you actually seen oil?"

"I don't know that this thing is called oil, but it is made from the land. I usually call it tincture oil. When marching and fighting, the arrows are stained with it, ignite it and then fired it out. This is used tincture oil." Li Er said.

"Okay, then I'll continue to say that this machine is even simpler. The carriage you go out and the hot air balloon we are flying now can be called machinery. In short, something that can help us save our energy and time to do a certain job can be called machinery."

Li Er nodded and signaled that he could understand.

"This electricity, the emperor, the lightning in the sky is electricity." Zhang Nan finished speaking and pointed to the sky.

"Can the lightning in the sky be used for my use?" Li Er said that he was deeply shocked. The ancients feared the sky. This idea was deeply rooted and could not be eliminated by Zhang Nan's simple words.

"Of course, do you think this thunder, lightning, and rain will not be related to Thunder God, the mother of the electric power, and the Dragon King?" Zhang Nan joked, thinking that Li Er would blush after hearing this. But he didn't expect that Li Eryi said as if he was taken for granted.

"This must have been made by the gods in heaven, otherwise what explanation would be given."

"The emperor really thinks that the locust plague in the second year of Zhenguan is really caused by God's thought that you are not diligent in your work and love the people, which leads to the disaster caused by God?" Zhang Nan said with a smile.

After hearing this, Li Er blushed. If he admitted it, it means that he was not diligent enough to love the people last year. If he did not admit it, it was not something that the gods did. For a moment, Li Er didn't know how to answer, but fortunately, Li Er couldn't answer, so he slapped Zhang Nan on the head and said, "Don't change the topic, continue to talk about what's going on."

Zhang Nan rubbed the head that was slapped by Li Er and thought to himself: "You can't joke with Li Er anymore. Li Er is not the one who can make jokes."

"This locust plague, thunder, rain, and lightning are the same principle. They are all very ordinary natural phenomena, just like the sunrise and sunset every day, but one occurs more and the other occurs less, but they are all natural phenomena, which means that they are not manipulated by the gods."

"I heard Qingquan say that, do you know if there are any gods in this heaven?" Li Er asked.

"I really can't guarantee whether there are ghosts and gods in this world. However, as a human being, as long as you have a clear conscience, why should you be afraid of ghosts and gods? I think it is understandable that people worship the heaven and earth and pray for God's forgiveness when the people believe in ghosts and gods. This is just a sustenance for the people. But if natural disasters happen again, then the inaction of officials and not helping the victims will blame everything on God. What is the need for such officials to exist?"

After hearing Zhang Nan's words, Li Er nodded repeatedly and said, "Qingquan, what you said makes sense. As an official in the area, he should protect the people. Even if there is a natural disaster, it is God's business. Officials must put their position in the right place. Qingquan, what you said is reasonable." Li Er praised Zhang Nan, which made him embarrassed to praise him.

"I understand what you are talking about in the industrial foundation, but how can these things help our Tang Dynasty?"

"This, simply put, is to let machinery replace simple manual labor. Your Majesty, what was originally done by more than a dozen people now only needs three to two people and one machine to complete. Can the remaining people do something else?" Zhang Nan thought for a while and gave a simple example.

"Well, it's reasonable, but how should this start? I still understand the principle that everything is difficult at the beginning."

"This, I have to go back and think about it. When there is a result, I will go to find the emperor again." In fact, Zhang Nan had a result in his heart, that is, using a steam engine, which is the prototype of the first industrial revolution. However, the honeymoon period between Zhang Nan and Cui Yue has not yet passed. At this time, Zhang Nan's mind is not changing the world, so Li Er still has to wait for a while.

"Well, then you have to go as soon as possible, time is not waiting for anyone." After Li Er finished speaking, he looked into the distance and suddenly said, "Okay, Qingquan, fly into the palace. I have been out for a long time."

When Zhang Nan heard this, his eyes looked at where he was, and then smiled and said, "Your Majesty, let me tell you good news."

When Li Eryi heard the good news, he couldn't help but be overjoyed, "Do you already have an idea now?"

"No, no, no, no, I have no idea yet." Zhang Nan waved his hand and said.

"Then tell me what good news is." Li Er asked strangely.

"The good news is that I don't know where it is here. We seem to have flew too far and got lost." Zhang Nan said with a wry smile.

After hearing Zhang Nan say this, Li Er's face was full of darkness and didn't know what to say. It was like a bus driver running with the passengers, but he told the passenger that he didn't know where to drive and could not go back.
Chapter completed!