The principle of movable type printing can be said to be simple and cannot be simple anymore. Even children in later generations can understand it. However, before movable type printing appeared, few people could think of this method.

Later generations said that Bi Sheng invented movable type printing, but in fact, before Bi Sheng, clay movable type had appeared, and Bi Sheng only changed clay movable type to wooden movable type. Of course, this is also an amazing improvement. So Bi Sheng, like Watt, although they were only improving the inventions of their predecessors, it did not hinder their greatness.

In the early Tang Dynasty, even the printing of engravings was still in a very primitive stage. Only some temples used engravings to print some scriptures or Buddha statues in order to promote Buddhism and then sold them to believers. However, because the quality of engravings was low and the printed things were very rough, this kind of printing method was not popular. Except for a few Buddhists, many people had never even heard of it. Therefore, Liu Rengui was so excited when he knew the function of movable type printing.

"Mr. Concubine, this movable type printing is a great news for scholars all over the world. And I think one set is not enough at all. Why don't we make a few more sets!" After being excited, Liu Rengui immediately suggested again that he had opposed casting these copper movable types before, because these things require a large number of craftsmen and copper, but now he has taken the initiative to make a few more sets, and this change is a bit too big.

"It's okay to make a few more sets, but didn't you say that the copper material in Luoyang is insufficient last time?" Li Xiu asked with a smile.

"Hehe, this..." Liu Rengui suddenly showed a little embarrassed expression when he heard Li Xiu's words, and then he said, "In fact, since the gold and silver coins were minted, the copper consumption of coin minting bureaus in various places has been greatly reduced. Now the coin minting bureaus in various places are also stored in some copper materials, and they are not available for the time being, so I can draw it to cast it into movable type!"

"Haha~, then do it this way. I will take this set I have just cast to Chang'an to offer to Your Majesty. If you have someone put it in a box, you will stay here to urge the casting of movable type. Although this thing seems to be able to print books, it actually has a deeper impact!" Li Xiu laughed when he heard Liu Rengui's words. He was not a vengeful person, not to mention that he also knew Liu Rengui's personality. Before, he had used the power of the Money Making Bureau to cast movable type, which was indeed beyond the scope of the responsibilities of the Money Making Bureau, so Liu Rengui opposed it so much.

"Sir, obey the order!" Liu Rengui agreed immediately. He also vaguely felt that the purpose of Li Xiu's casting of movable type was not limited to printing books, but his position was not high, and these things were not what he should consider. For him, the most important thing was to be able to cast copper movable type more exquisitely according to Li Xiu's requirements.

Next, Li Xiu went to the warehouse to see the copper movable type. Speaking of which, the coin minting bureau was originally used to make assets with copper, and the copper coin mold also needed to be engraved, so casting copper movable type was not too difficult for those copper smiths. Even compared to a small copper coin, the technical content of copper movable type was much lower. At least after checking it, Li Xiu had to be amazed at the craftsmen's craftsmanship. No wonder the coin minting bureau in Luoyang could become the largest coin minting bureau in the Tang Dynasty, which was definitely inseparable from the craftsmen's craftsmanship.

After checking the copper movable type, Li Xiu took a walk in the coin minting bureau again. Although he had been running here a lot during this period, his main energy was to supervise the casting of copper movable type, and he did not carefully observe the coin minting process here. Today, he took this opportunity to make up for it.

However, just as Li Xiu had just visited the money minting bureau, he was about to go back to rest, so he rushed to Chang'an as soon as possible the next morning, but he didn't expect to suddenly meet someone at the door of the money minting bureau. When he saw this person, he was stunned, and then tentatively shouted: "Wang Fan?"

Hearing Li Xiu's voice, the young man holding a bunch of documents in front of him immediately turned his head. However, when he saw Li Xiu, he was startled, and then immediately walked over with a smile and saluted, "I have met Brother Yi!"

This young man is the son of Princess Guanghua, Yang Fan, Yang Guang's posthumous son. However, he has always grown up with his adoptive parents. Princess Guanghua was also worried that after he recognized this son, the identity of the prince of the previous dynasty would cause a huge change in Yang Fan's life, so he kept living in Luoyang with his adoptive parents, and even simply followed his adoptive father's surname Wang. However, Wang Fan goes to Chang'an every year to visit Princess Guanghua and Ma Ye. Li Xiu also likes this young man very much. In addition, both of them are half of Ma Ye's sons. As a result, Ma Ye forced them to form brothers of different surnames a few years ago.

"No need to be polite, why are you here?" Li Xiu couldn't help but ask again in surprise. When he saw Wang Fan just now, he was still a little confused, but he didn't expect it was the other party.

"Haha, Brother Yi doesn't know anything. Last year, I went to the Luozhou General Administration Office to work. Today, I had an official business to come to the Money Making Bureau to handle it, so I went there in person. But I didn't expect to meet Brother Yi here. I don't know when Brother Yi came to Luoyang?" Wang Fan also explained with a smile. He didn't know the news that Li Xiu was in Luoyang. After all, Li Xiu was very anxious this time, and after coming to Luoyang, he often ran out of the city and didn't have time to notify him.

"So that's it, but why did you think of the General Administration Office doing things?" Li Xiu nodded at the beginning when he heard this, and then asked curiously. After all, Wang Fan's identity is a bit special, and Wang Fan now knows his background. He is not short of money now. Princess Guanghua and Ma Ye have purchased a lot of land for him in Luoyang, which is enough for their family's life.

"Didn't I get married last year? As a result, my father said that since I got married, I also need a career. I don't look like a man when I stay at home every day, so I asked me to find something to do so as not to become a useless person. As a result, the general manager's office needed someone, and I could write and calculate, so I went in and worked as a small clerk. I wouldn't be so bored if I had a job." Wang Fan explained with a smile again.

Li Xiu finally understood after hearing this. Wang Fan's adoptive father was a small businessman. Even if he didn't need to sell tofu to support his family now, he didn't want his son to be a rice worm. So he urged him to come out and do things. It doesn't matter whether he makes money or not. Anyway, their family is not short of that little money.

Although Li Xiu became a righteous brother with Wang Fan, he was forced by Ma Master after all, and the two did not have much contact with each other. So after learning about Wang Fan's recent situation, Li Xiu also encouraged him and told him that if he encountered any difficulties, he could come to him directly, and then he said goodbye to the other party and left. The next morning, he rushed to Chang'an with the cast copper movable type. 8)
Chapter completed!