After visiting the Gongyu Academy, Li Xiang intuitively learned about the situation of the production of weapons in the Southern Song Dynasty, and indeed the craftsmen are also very innovative, and there are many exquisite inventions, but these production workshops are still in the stage of manual work, and cannot form a large-scale effect. Pen & Fun & Pavilion www.biquge.info

Li Xiang felt that the integration of military and civilian in later generations might still be a good way, after all, the new technology was only used in the military field, which would be too wasteful! In fact, the economic benefits of applying military technology to the civilian field will be staggering.

The most typical example is, of course, the United States. In the 50s of the 20th century, the United States invested in national defense-related research and development in some key technological fields, which produced important technological "spillover effects" from military applications to civilian applications. In the 50s and 60s of the 20th century, jet aircraft engines were used in military bombers, transport aircraft, tanks, and the requirements for fuselage design and engineering performance of these weapons were similar to some requirements for commercial air transport vehicles, so products like Boeing airliners were developed on a large scale, which is the role of military technology in promoting the economy.

For example, the first computer developed by the United States for military needs later led to another industrial revolution in human history led by information technology. It was the global positioning system developed by the United States in the 70s of the 20th century for the deployment of the Star Wars program that led to the later application of GPS in various sectors of the national economy, generating direct annual benefits of nearly 10 billion US dollars; In 1993, the United States allocated $600 million in defense spending, and the construction of the national information superhighway organized and implemented by the defense department led to the rapid development of the Internet industry.

Even 3D printing technology was developed from the military field, when laser additive manufacturing technology, that is, 3D printing technology, was invented in order to manufacture some special aircraft parts. Without these, how could the super 3D printer in Li Xiang's body appear?

Although this was in ancient times, Li Xiang felt that this model could still be brought back to the Great Song Dynasty.

Speaking of which, we have to talk about the economic situation of the Great Song Dynasty. The financial income of the two Song Dynasty was the highest in feudal society. The Northern Song Dynasty remained at tens of millions of guan all year round, while the Southern Song Dynasty increased to more than 100 million guan after losing one-third of its territory. According to the tax rate of one-fifteenth and the population of 100 million at this time, the per capita income of the Great Song Dynasty was more than 2,000 US dollars per year.

Although there is a huge gap between the rich and the poor, it shows the size of its economy. With the development of the productive forces, many new economic avenues have emerged, making the commodity economy prosperous like never before. First, the government of the Southern Song Dynasty did not suppress land annexation, thus breaking through the decentralized operation of traditional agriculture and forming many grain production bases under unified management. At the same time, agricultural production is no longer confined to grain, and farms specializing in the production of cash crops have appeared in many places, and names such as "tea garden household", "village wine household", "flower household", "medicine household", "lacquer household", "frosting household", "water flour household", "grinding household", "melting household", "machine household", "aya household", "fragrant household", "crab household" and so on often appear in the official and private books of the Great Song Dynasty. They were no longer self-sufficient, but bought food, which accelerated the circulation of money.

Second, the Great Song Dynasty did not strictly restrict the hukou like other dynasties, and the movement of the population was very free. As a result, the liberated productive forces engaged in business activities, which accelerated urbanization. According to the data, the Southern Song Dynasty was the era with the highest urbanization rate in ancient China, and the subsequent dynasties were all behind. 20.1% in the Northern Song Dynasty and 22.4% in the Southern Song Dynasty. "Tokyo Menghualu" records that thousands of loads of fresh fish are imported into Kaifeng every day.

"Menglianglu" records that there are countless butcher shops in Lin'an, the capital of the Southern Song Dynasty, and there are no less than one or two hundred fish shops. Shen Kuo's "Mengxi Writings" volume 14 recorded: "The Tang people wrote rich and noble poems, and they were shocked by the poor eyes for many years. For example, Guan Xiu's "Rich Poems" clouds: 'Carved into a zither pillar and geese next to each other. 'There are all those who are bombed here, what a way. and Wei Chulao's "Mosquito Poem" cloud: 'Ten red silk around the night jade. 'Ten red silk for a tent, less than four or five feet square, I don't know how to stretch my feet? This so-called 'never been near the rich man's house'. The things that were once "shocked by the poor eyes" in the Tang Dynasty were not only owned by the poor people in the Song Dynasty, but also ridiculed by the "ten red silk accounts".

In the Song Dynasty, "the homes of the common people must be dressed in brocade, thick silk, and Luo Xuan." There are many names, and Fu can win over the poor". Another example is the consumption of wine, "Song History Food and Goods Chronicles" records that the development of the wine industry has led to the annual use of glutinous rice by wine households in Beijing 300,000 stones. Zhou Hui's "Qingbo Magazine" volume 7: "Four acres of seedlings, one-third for brewing wood and tillers, still not full." "Flower farmers are cultivating new varieties with each passing day. Among the existing flower monographs in China, the Song Dynasty has the most monographs on peonies, peonies, chrysanthemums, etc.

The third is that with the increase in the amount of money in circulation, the imperial court issued paper money - Jiaozi and Huizi. And then there are many credit systems. And the emergence of government-run banks, intermediary companies and other credit institutions. The Great Song Dynasty no longer relied on agricultural taxes as the main source of tax revenue, and the astonishing speed of money circulation brought amazing tax revenues.

But the Great Song Dynasty still couldn't get rid of the fate of poverty and weakness. The huge bureaucratic contingent has brought huge administrative expenditures, not to mention that the salaries and benefits of officials in the Great Song Dynasty are indeed enviable.

Of course, Li Xiang couldn't change these things, all he could do was to bring some advanced technology, especially military technology, such as artillery, rocket artillery, cement, machine tools, etc., to make the Great Song Dynasty stronger and resist the invasion of the Mongol Empire.

Time is already running out, and if the trend of history does not change, then the Mongol army will invade Sichuan next year! It is Li Xiang's hometown in his previous life, and he has a special affection for Li Xiang in Sichuan, although this is in another time and space, but Sichuan is Sichuan and will not change!

The iron hooves of the Mongolian army, Li Xiang wants to use artillery fire to stop it, so now his first priority is to make the Tiger Squat Cannon and the larger cast iron cannon batch manufactured as soon as possible, and the rocket artillery must also speed up the progress of development.

Back at the artillery manufacturing institute, the officials and military craftsmen under him were studying Li Xiang's small machine tool!

Li Xiang was very happy, and walked forward and said, "Everyone, do you have a preliminary understanding of this machine tool?" ”

A warcraftsman boldly replied: "My lord, just now we studied this machine tool according to the textbook you wrote, and found that it is really ingenious, my lord, you are really the reincarnation of Luban!" ”

Li Xiang smiled embarrassedly: "This craftsman, I have won the award!" In fact, this is not a big deal, as long as everyone is willing to study, they can also invent better things than this machine tool in the future! Since you all have a certain understanding of the machine tool, then now the official will personally show it, let you see how the machine tool is used! ”

Zhang Shijie said excitedly: "Okay, the adults will demonstrate in person, how rare such an opportunity is, everyone has to learn seriously!" ”