"Cheng Qian, you are wrong, if you want to print the Analects, you only need to use engraving printing, and the speed is definitely faster than writing." Li Yuan said.

In ancient China, although Bi Sheng invented movable type printing with clay molds in the Northern Song Dynasty, engraving printing was more common in the late Qing Dynasty.

As for the reason, one is that the books printed in ancient times are more of the five classics and four books, the content has not changed for thousands of years, and it is easier to use engraving, and the other is that other books do not sell well, and if they are printed with movable type, the cost is too great.

There are also many defects in engraving, to the Song Dynasty, the development of engraving printing industry to its heyday, first, engraving is time-consuming, labor-intensive, second, a large number of book plates are inconvenient to store, and third, there are typos that are not easy to correct.

At the end of the day, it's an economic account. Movable type printing is definitely much more advanced than engraving printing, but the initial cost is too great, and it is too difficult to keep those clay molds, and if you want movable type printing, the best movable type in ancient times was made of brass.

However, this time, the Emperor Taishang used Western lead movable type printing, and the price was much cheaper than the currency of copper.

Copper, that's money.

"Having said that, even though the speed of printing is much faster, the engraving printing of the prison is only to print some Buddhist scriptures, and it is not used for other purposes." Li Chengqian frowned.

"This is Li Shimin's short-sightedness." Li Yuan laughed secretly.

Li Shimin has always wanted to suppress the monopoly cultural rule of the family, and implemented various measures, such as opening a township school, but he did not find the engraving printing technology under his nose.

Through engraving printing, the cost of books can be greatly reduced to the extent that people can also buy them. In the long run, even if the people's scholars are congenitally weak, but the base of the people is large, the monopoly of culture will slowly disappear.

But it's a pity that Li Shimin hasn't noticed this, if Li Yuan hadn't reminded Li Chengqian of printing here, I'm afraid he wouldn't have remembered that there was such a engraving printing in Jiangzuo.

Through the reminder of the Emperor Taishang, Li Chengqian suddenly felt a spiritual light cover his eyebrows from the heavenly spirit, and he felt enlightened and suddenly enlightened, and he said: "How stupid I was before I waited, how fast I was to engrave and print books, it's a pity...... It was only used by those monks to print Buddhist scriptures, and the emperor's grandfather waited for a while, and I entered the palace to meet my father and tell me about it. ”

"This matter is not urgent, and this kind of thing is not in such a hurry." The corners of Li Yuan's mouth twitched slightly, is this bear child a little calm?

He changed the topic and said, "Do you remember the wedding gift that Grandpa Huang promised to give you a month ago?" ”

"Cheng Qian..... Remember, but didn't you send it yesterday? Li Chengqian said.

"That's just an addition, the real gift is this thing, it's what makes you really ...... A treasure that stabilizes the position of the prince. Li Yuan whispered.

"It?" Li Chengqian was stunned.

"Yes, your qualifications are dull, far inferior to your two younger brothers, Ke'er released Chang'an, and since then he has been insulated from the throne, but fortunately for him, he doesn't have to worry about the court's guns and arrows, but Qingque is not as honest and cute as he looks, and the establishment of a literature museum is definitely ill-intentioned....... Li Yuan said in a deep voice.

"I ...... Qualifications are dull......" Li Chengqian was speechless for a moment.

No matter how you look at this sentence, the emperor is scolding him, but after thinking about it, he is really inferior to his two younger brothers.

"Qingque has always been gentle, how can he have a disagreement with the position of the prince, no matter how he says that I am his eldest brother......" Li Chengqian retorted, but the more he spoke, the quieter his voice became.

"You can't have the heart to harm others, and you can't have the heart to prevent people." Li Yuan emphasized.

He watched the three princes grow up, and he knew their personalities well, although the relationship was quite harmonious, and perhaps there was also a brotherhood.

But...... With Li Shimin's experience, no matter how stable a person is, he will have an idea in his heart, and he may have the opportunity to touch that position.

In fact, the three princes in history shined in their own glory, just to squeeze Li Chengqian from the position of prince, but the natural defects of Li Ke, the king of Wu, led to the isolation of the throne, and at the same time, he was excluded because he was too good, and was finally framed to death by the eldest grandson Wuji on the charge of rebellion......

As for Li Tai, the king of Wei, he was about to ascend to the throne after a lot of thoughts, but he unexpectedly made a wrong step......

In the seventeenth year of Zhenguan, the crown prince Li Chengqian was deposed, and Li Tai took the opportunity to coquettish his father, claiming that he would kill his son and pass the throne to his younger brother Li Zhi after a hundred years. And when Li Shimin saw Qingque thrown into his arms, his heart immediately softened, and when he heard such a guarantee, he promised to make him the prince.

However, such a lie was ruthlessly exposed by Chu Suiliang, and Tang Taizong calmed down and understood that it was impossible to kill his son and pass on his disciples, so in order to ensure that his three beloved sons could survive at the same time, he decisively set up Li Zhi as the crown prince.

Li Zhi this throne...... It's as easy as picking it up.

Emperor Taishang understood that it was time for Li Chengqian to face this cruel truth, and Li Tai, the king of Wei, was definitely not as honest and amiable as he appeared to be, and he had no scheming.

Of course, Li Yuan also has a plan of his own, the three princes, no matter what he does, Li Ke, who has no chance of the throne, is put on the frontier, if he is really talented, it is his creation, but this possibility is very small. But no matter what, Li Ke can at least master an army, and he will not be easily framed by the eldest grandson Wuji like in history, and he has no choice but to die. At the same time, the positions in this army are all controlled by his students, and they also have a certain degree of control.

And the remaining two princes, the crown prince Li Chengqian has always been close to him, and he dared to draw a sword for him, so as to stabilize his position as the prince, Li Tai, the king of Wei, is an ambition to be broken, and he wants to understand the throne...... Don't covet it!

Wait until he has accumulated enough strength, and then re-ascend the throne, like the Zhou royal family, divide the kings in the land of Siyi......

"Cheng Qian...... Some get it. Li Chengqian lowered his head, looking a little unhappy, but suddenly he raised his head again and said with a smile: "The wolves are waiting for their prey, and they all want to swallow it, but if it is...... This prey has sharp claws and a mighty and tall body......"

"That's a tiger!" Li Yuan couldn't bear to remind.

"Yes! The Tiger Roaring Mountain Forest is alone, not only for deterrence, but also for protection! ”

"Guard?"

Emperor Taishang didn't expect Li Chengqian to say such childish words, the battle for the throne has always been life-and-death, how can you be benevolent? However, there is also some comfort in his heart, Li Chengqian is still a simple child with a kind heart after all.

But in the next sentence, the corners of his mouth with a smile completely froze......

"Yes, it's your own territory that you're guarding...... Prince... Once you sit on it, you can't come down, because if you come here, you're going to die! Li Chengqian's face was solemn, and for the first time he showed the indifference and ruthlessness that belonged to the royal family...... Helpless.

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