As one of the most important institutions under Fusu, the research institute is naturally a priority for the supply of various materials in the research institute!

Old Zhao held a small notebook in his hand, and according to the steps mentioned in the notebook, grind, calcined and combined the limestone and other materials!

"It should be true that this is true, right?" After adjusting the cement ratio for a while, Old Zhao thought secretly in his heart!

Following the steps, I have developed a lot of cement.

However, after each development, I feel unsatisfied.

Most of them are too fragile and are completely less solid than what Prince Fusu said!

This time, after adjusting the proportions, we made more than ten points according to different proportions, and each inserted a small label.

Then, Lao Zhao started to mix the sand and water with these ingredients and stir!

Immediately afterwards, apply these muddy cement to the utensils and wait for it to dry naturally!

Water it a few more times a day to raise it. In this way, two days passed, and Lao Zhao asked someone to pick up a big hammer and smash it onto the cement!

The first part of cement cracked with one hammer. Old Zhao shook his head secretly and then asked someone to try the second part...

In this way, seven or eight parts of cement were smashed in a row, some were fragile, and some were not bad. It took three or five hammers to crack.

However, this still made Lao Zhao feel unsatisfied.

This is still a little different from what the prince said about hardness!

"Old Zhao, have you made this cement?" Just at this moment, Fusu came to the research institute and happened to see the scene of smashing cement and asked!

"Prince, the hardness of this cement is still not enough. I'll try some more recipes!" Hearing this, Old Zhao glanced at Fusu and replied.

Bang bang bang bang...

The strong man next to him, holding a big hammer, smashed at one of them, making a thud.

However, after hitting more than a dozen hammers in a row, only some white marks were left!

"Oh? This seems to be pretty good!" Seeing this, Fusu's eyes lit up!

"Is this successful?" Similarly, Old Zhao also noticed this and was equally happy.

Then, I tried it with the hammer myself.

I didn’t have enough strength, and the cement block was even more unresponsive if the hammer was smashed down!

"Prince, look at the hardness, is it suitable?" After trying it out for a few times, I felt that there was no problem, and immediately, Lao Zhao asked Fusu!

Of course, Fusu also took the hammer and smashed it a few times.

This degree of strength seems to be not much different from the cement in later generations!

"It's not bad, it's very good, it's great. The cement in the future will be made according to this standard!" Fusu felt his hands numb and he nodded and said.

"Okay, I'll remember it quickly!" Seeing that Fusu was satisfied, Old Zhao took out the small notebook and carefully recorded the best cement formula in all aspects!

"Crown Prince, are you here for cement this time?" After carefully recording the things, Old Zhao asked.

"No, I'm surprised to see that your cement has been developed. My purpose this time is to let you make banknotes!" Fusu said!

"Bank notes? What is that?" Old Zhao was in a good mood when he heard that Fusu had a new task to him.

But, what is the banknote? Old Zhao didn’t quite understand!

"Paper currency is the concept I proposed. The coins used in Daqin are too heavy now, so I want to use paper to make a banknote that others cannot imitate!"

Fusu spoke and told Lao Zhao about his request for making banknotes.

First, when choosing the paper to make banknotes, Fusu decided to use mulberry paper.

This is a kind of bast fiber, the material used to make banknotes, which is difficult for ordinary people to imitate.

Of course, mulberry paper will also issue corresponding laws, prohibiting folk production!

Secondly, there are extremely complex patterns and multiple printings!

Fusu searched on how to prevent counterfeiting of ancient silver notes from the web page, and explained everything to Lao Zhao!

"Well, the prince's thoughts are indeed comprehensive!" After hearing some anti-counterfeiting methods mentioned by Fusu, Lao Zhao nodded and said!

"How? Master Zhao, can you do it?" Fusu asked Master Zhao.

"Milk paper, I just heard from the prince that you said, but I haven't made it, so I don't know what it looks like! However, being responsible for patterns that others cannot imitate? I know that a person can help!" Lao Zhao replied.

"Oh? Who?" Fusu's eyes lit up when he heard this.

"I have a strange man in the Mo family, with a pair of skilled hands. No matter how precise the things are, they can be made. Can the prince know why he keeps his hands fine? How do he practice them?" Lao Zhao asked Fusu.

"I don't know!" Fusu played the role of supporting actor and shook his head and replied.

"Often, he always carves words on the rice with a thin needle, and can carve at least dozens of words!" Lao Zhao replied.

"Then this is really a strange person!" Fusu said with a look of marvel at what Old Zhao said!

From a technical perspective, can you carve dozens of words on rice? This can be said to be a skillful approach to the ceiling, right?

"So, then please ask Lao Zhao to find someone to carve the printed template!" Fusu said.

"Okay, let me cover this matter!" Old Zhao agreed, obviously still very confident!

After handing over the carvings to Lao Zhao, Fusu was studying ink in the next days!

If you can make some ink that others cannot make, it will be considered a major anti-counterfeiting method!

Moreover, you can’t just use ink when printing, right?

Otherwise, no matter how exquisite the carving is, the ink will definitely be a vague piece!

It took a few days for Lao Zhao to explain the specific process of cement production, and then left Xianyang and went to find the strange man who could carve the words on the rice!

On the other hand, with Fusu's order, Jia Xianfeng was opening a cement factory again, and large areas of cement were made!

Then, Fusu inspected all aspects of the surrounding terrain, the terrain and the distribution of the people, and selected a river outside Xianyang City.

Looking around, the narrowest place is about fifty feet.

Fusu decided to build a bridge here!
Chapter completed!