Zhao Hanzhang just sighed casually, but Fu Tinghan lowered his eyes and thought about it, and then said: "It is not difficult to generate electricity, not to mention that we now have hydroelectric facilities, we can also find coal mines, and we can even use manpower to generate electricity. Telegraphs are transmitted on short waves, and now the ionosphere is very clean, even though there are many dense forests and water networks, but I believe that radio waves can be transmitted."

"The difficulty of the technology is in the tube, I can't do it in a short time, I can only say try it as much as possible, you see you need to wait for a long time."

Zhao Hanzhang saw that he had seriously analyzed the feasibility, opened his mouth wide, and it took a while to find his voice, "That's ...... Then you can give it a try."

Zhao Hanzhang began to think hard about the physics knowledge he had learned in junior high school and high school, and finally dug out a little bit from the depths of his memory, "What about the battery?"

Fu Tinghan smiled and said: "This is not so difficult, if we can make electron tubes, then we will definitely be able to make qualified zinc and copper sheets, the simplest batteries are aluminum, zinc, tin, iron, copper, silver and gold, these two random combinations can transmit current, zinc and copper have a better transmission effect, you can use both of them, the technology may not be very good, the use efficiency is far less than modern, but as long as it can be made, it is still possible to use it like the nineteenth century."

"In the future, we will be able to make dry batteries from carbon rods and zinc, or reversible batteries from lead dioxide." The more Fu Tinghan spoke, the more excited he became, "I still prefer reversible batteries, dry batteries are unusable when they run out, but reversible batteries can be recharged and used repeatedly."

As a professor of mathematics, how could he only study mathematics?

His knowledge of physics is not much better than that of his colleagues in the physics group, and science things are interconnected, especially mathematics and physics.

Fu Tinghan became excited, more attentive than Zhao Hanzhang, and directly pulled her to look at the map.

This is not a theoretical difficulty, he knows all the theoretical principles, this is a technical difficulty, and it needs to be pushed back.

Fu Tinghan used to make glass, iron and steel, water mills, and hydraulic calciners, but he was only responsible, not very excited, and did not find it challenging.

Because the techniques used in it can be done by the skilled craftsmen of the moment, he does it just by combining their techniques together, or by slightly improving them.

What they lack is not technology, but ideas, he doesn't say, in a few decades, hundreds of years, there will be people who think of taking this small step forward.

But electricity is different.

There is no electricity in this world.

They really need to start from scratch, and the technology applied in them can be made by no one but him.

When he was studying, whether it was the batteries, electrode tubes or wires that were used, they were all ready-made, and now they need to be pushed back and made little by little.

If in the past, he stood in front of them to guide them and teach them to choose the right path; Now he is going to make a way for those behind him in the midst of thorns and wilderness.

This sense of accomplishment is no less than doing math problems, and it makes him happy.

He pulled Zhao Hanzhang to the map to look at it, "The scope of this mountain forest is very large, so it is difficult to transmit directly between these two points, but fortunately, there is mostly cultivated land here, as long as it is not rainy, it should be reflected from this side, but the time will be longer......

But compared to the current speed of information transmission, the time it takes for radio waves to be transmitted in zigzag is not worth mentioning at all.

During World War I, wireless telegraphy was applied to the battlefield, and it could be transmitted for thousands of kilometers at that time, and Fu Tinghan felt that it would definitely be possible now.

But for him to do this, he first has to form a team.

Before Zhao Hanzhang came back to his senses, Fu Tinghan had already entered the next stage, turned his head and asked, "Give me Wei Jue."

Zhao Hanzhang came back to his senses, "Who?"

Fu Tinghan: "Wei Jue, and Ji Shuyan, I think they can be my deputy."

The people who took refuge in Zhao Hanzhang, Fu Tinghan had contact, and these two people were more interested in material sports and had certain research and talent.

Zhao Hanzhang blinked, "Wei Jue is now in Luoyang, but Ji Shuyan, I remember that he was in the army?"

Ji Shuyan, a native of Wu Xing, followed Tianmen Gengzhou, Yingchuan Yuyi and others to persuade her not to fight with Gou Xi and throw herself into the net.

Anyway, after that, Ji Shuyan stayed in Luoyang and studied with Zhao Cheng.

When the news of the Xiongnu's southern invasion reached Luoyang, he immediately stepped on his long sword and left Taixue and went straight to Beigong Chun, but Beigong Chun politely rejected him after trying his kung fu and riding.

Ji Shuyan was sad and angry, and was about to go to Yuzhou to find Zhao Hanzhang, and when he left, he ran into Fu Tinghan, who came up to Beigong Chun to discuss the war.

He doesn't dislike Ji Shuyan's poor riding skills, his kung fu is not good, no matter how bad it is, there will be no Fu Tinghan, no matter how bad his kung fu is, there is also it, in Fu Tinghan's view, fighting a war should not only look at martial arts, but also look at IQ and strategy.

Like him, you can't get on the horse and charge into battle, you can be a military advisor in the back, with a good plan and a good execution of the commander, isn't that also a victory?

Although in the end, Fu Tinghan found that Ji Shuyan was not very good at strategy, but his IQ was still very high, so he left him in the army for logistics.

When Fu Tinghan called him, he was calculating how long the newly collected grain and grass would be enough for them to last.

As soon as he heard that Fu Tinghan was calling him, he took the list, thinking that he was going to ask about grain and grass.

As a result, the guards who came to call him took him directly to the main tent.

Ji Shuyan's eyes lit up, and he immediately put the list away and stuffed it in his arms, and sped up his speed.

Fu Shangshu finally saw his military talent and recommended him to Zhao Tingshi to lead the troops to the battlefield?

Ji Shuyan went to the door of the main tent and tidied up the clothes on his body, and then asked to see him.

Fu An came out to invite him, "Mr. Ji, please inside."

When Ji Shuyan went in, he saw Fu Tinghan and Zhao Hanzhang sitting and standing, writing and discussing something in front of the case.

Seeing Zhao Hanzhang, Ji Shuyan immediately stepped forward excitedly and saluted, about to state his views on this big battle and the plan he had come up with recently......

"Let's talk." Zhao Hanzhang waved his hand to dispense with his salute, straightened his waist, turned around and walked to the bookcase on the other side and sat down, picked up the official document and began to approve.

Ji Shuyan's stomach was blocked in his heart, he looked at Zhao Hanzhang, and then turned his head to look at Fu Tinghan.

Fu Tinghan beckoned to him and asked Fu An to add another high stool, so that they could talk while calculating.

Ji Shuyan silently stepped forward, glanced at the thing on the paper that he couldn't understand at all, and asked, "What is this?"

Fu Tinghan said: "The speed of information dissemination is slow, and the manpower and material resources consumed are particularly large, and it is not safe. And when the enemy is in the middle, the transmission of information between allies and troops is not only slow, but there is also a danger of interception and leakage, so I would like to study the communication station."

Ji Shuyan: "Fu Shangshu is reasonable, but what is a communication station?"

He understood everything before, but he didn't understand the last four words.