Spring has arrived in the imperial capital, and everything has begun to grow and sprout.

The next day, the horseshoe technique was quickly arranged to be implemented, and the prince's subordinates, Liu Zhengde, the steward of the manor, and Hu Liwei, the steward of the ironsmithy, each led the craftsmen to demonstrate the operation. Now even a horse breeder knows about the genius invention of the prince. In a few days, it has been popularized to all war horses in Chang'an City. And with the increase in the production of horseshoe, it quickly spread to all cavalry units.

Movable type printing was also entrusted by Li Shimin to the prince to send a special person to control, after all, maintenance, repair, and replacement are all the prince's craftsmen. When he watched his favorite Wang Xizhi's calligraphy being made into movable type and installed on the template, he couldn't help but sigh in his heart. The point is, the printing press can also be powered by water, which surprised him even more, how did this kid come up with it? Although there were already waterwheel devices driven by water and lettering and engraving technology. But who would associate a watermill with movable type printing?

Ouyang Xun, Yu Shinan, and Chu Suiliang couldn't have imagined that Li Shimin personally issued an edict to let them write classics. This is the first three of the four major families in the early Tang Dynasty, Ouyang Xun, the letter book, a native of Linxiang, Tanzhou, and a calligrapher in the early Tang Dynasty. From Chen and Sui to the Tang Dynasty, he won Li Shimin's appreciation and respect. Yu Shinan, whose name is Boshi, is a native of Yuyao, Zhejiang, a poet and calligrapher. He has served as a secretary and supervisor, and a bachelor of Hongbunkan. Chu Suiliang, the word Dengshan, Qiantang people. Calligrapher of the early Tang Dynasty.

The three of them were arranged to go to the prince's mansion and write a few pages of commonly used Mongolian books such as thousand-character texts and hundred family names every day, as well as some reference books such as Shuowen Jiezi with many unfamiliar characters. What's even more bizarre is that there are also some specious Chinese characters that I don't know and some Persian (English letters), special symbols.

At the beginning, these people all complained a little, but after enjoying His Royal Highness the Prince's four dishes and one soup, sugar, wine and tea and daily necessities every day, they didn't say anything. Even in the end, he was a little reluctant to leave the Prince's Mansion. After all, if you want to eat after leaving the Prince's Mansion, it will be sky-high.

Li Shimin's father and son had long discussed that they would use the calligraphy of several famous masters as a standard printing style, produce a large number of movable type, print and distribute all kinds of books, and sell them all over the world at low prices. However, they can't say it explicitly, so they feel embarrassed, so they can only make this decision, and Wang Xizhi's calligraphy is just the emperor's favorite. In the future, the characters on banknotes and bills will use the standard printing style of these three masters, and the prince's own font imitation Song style is also used as a type of printing typeface.

Taking this opportunity, the books compiled by the crown prince were also circulated, and through Li Chengqian's deliberate propaganda and guidance, they were directly collected by the royal library. Specializing in organizing printing on their own, they began dumping at low prices. Among them, the Treasure Book of Objects (Basic Chapter) immediately swept the world. It includes four types: economic history, numeracy, physics and chemistry, and physical properties.

Subsequently, Li Chengqian sent people to hype up the Gewu Treasure Book (advanced chapter). Including health, economy, heaven and earth, and technology. It's just that there is no price in the market, because he is not printed at all. Why? This is the means of marketing, and it is also the stage of exploring experience, receiving feedback, and testing the reactions of literati families at all levels after basic marketing, and there are still many aspects of health, economy, heaven and earth, and technology that need to be improved.

So will it be stolen from the training camp's textbooks? There is no need to worry at all, even if you take away the several advanced books printed in the training camp, people will not be able to read them, because Li Chengqian encrypted them when he wrote them. Actually, it's not encrypted, it's just that these books are written with simplified Chinese characters and modern English and numeric symbols. Only he and the trainees of the training camp could understand it.

Of course, the Gewu Treasure Book (Basic Chapter) he issued also introduced modern numeric symbols and letters, but the text was only in traditional Chinese. In short, after the release of the Gewu Treasure Book, for a while, there was a sea of applicants for Tiantang Primary School. As a result, Li Chengqian had to raise the admission requirements, but of course it was not to raise the tuition fee.

Cement manufacturing was still under the control of the crown prince, and the expansion and reproduction was carried out, and a hill on the mountain of Jungnam was fenced off for cement firing production. The state will purchase and use it in a unified manner to prepare for the start of road construction. The pilot place is, of course, the imperial capital. After the pilot, there will be roads between Luoyang, Yizhou, Jinyang, Yangzhou, Fanyang (Beijing), Yizhou (Guangzhou), Hengan (Datong) and other cities.

At the same time, Li Chengqian sent people to begin to explore for nickel and copper and iron resources in Guannei (northern Shaanxi), Hedong (Shanxi), Jiannan (Sichuan) and Shannan (Hubei), which were the closest to Chang'an and had relatively short transportation routes, which were also the best choice in the early stage. At the same time, a large number of laborers were recruited, a large number of slaves were purchased, and preparations began to be made for the construction of roads in preparation for the mining of ore.

At the same time, Tiantang Bank prepared for the entire bank shares, which were divided into three parts, with the emperor contributing 40%, the prince contributing 30%, and the rest accounting for 30%. All royal children, as long as they invest, will own shares. Shares can only be transferred internally, and can be inherited or automatically renounced; plotted rebellion and took back the shares into the emperor's name. Bank share funds are not merged with the treasury, and treasury revenues can be invested in cooperation with banks.

Branches, sub-branches and branch offices in various places have also sent out manpower to start preparations one after another. Li Chengqian's major processing workshops provide new templates and special machinery, and provide special papers, special pigments and special glues. Next, a special person was sent to start experiments, special overprinting, layered printing and watermarking technology, as well as weaving anti-counterfeiting blended gold and silver threads. Once the new currency is successfully issued, the Shaofujian Mint will be abolished and merged into the name of Tiantang Bank.

In order to prepare for the design of the new currency and bank bills, Li Shimin specially convened several ministers above the third grade to hold a court meeting to plan and design the banknotes. Ouyang Xun, Yu Shinan, and Chu Suiliang were three famous calligraphers and painters who continued to be used, and Yan Liben, a die-hard fan and painter, was also specially arranged by Li Shimin to organize several masters who were proficient in painting and sculpture to draw and carve templates.

Nowadays, there are two kinds of currency in circulation in the Tang Dynasty: copper coins and silk silk. Through film, television and history, Li Chengqian deeply understood the money shortage in the late Tang Dynasty. Copper coins of the same weight are not as valuable as ordinary copper utensils, it is difficult to understand, but it is actually very simple, for example, a copper spoon weighs the same as twenty copper coins, but the spoon can be sold for more than five times the price of copper coins. So later, copper coins became less and less, and most of them were melted down and cast into bronze ware. That's the embarrassment of copper coins.

Besides, the combination of money and silk is not at all in line with the basic principle of commodity circulation. With the development of the economy, there will be greater problems, and if the common currency is not solved in the initial stage, it will seriously restrict the development of the economy in the future. This eventually led to the collapse of the economy, the unrest of the country, and the collapse of the imperial court. This is also the simplest, the economic base determines the superstructure.