No Regrets In Flourishing Tang

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The development of any empire can’t bypass the resource bottleneck, and the most important resource bottleneck is nothing more than 4 categories, food, fuel, fiber and building materials.

The four major bottlenecks hinder the economic growth of all empires, and each empire is faced with this constraint. To increase economic growth rapidly, it is necessary to get rid of these four resource bottlenecks.

Food is the core of any empire. Without food, the 100 old people will not be able to fill their stomachs. The empire will be turbulent or even collapse. The backwardness of agricultural technology will lead to extremely low food productivity. Only a large number of people engaged in agricultural production can meet the empire’s demand for food.

As a result, the empire could not draw enough manpower to carry out other work, and even when it encountered an invasion of foreign enemies, it had to recruit agricultural population lacking in training to join the army, thereby destroying agricultural development to a certain extent , Causing loss of national strength.

After Li An invented the black gunpowder, the steel production of Great Tang increased several tens of times. Ordinary old people can use more iron farm tools for cultivation, thereby increasing the output of grain, and gradually promote the agricultural machinery in the back. The productivity of agriculture is even higher, so many people can withdraw from agricultural production and move to industrial and handicraft production.

The importance of fiber is similar to that of food, because Great Tang is in a temperate zone and is divided into 4 seasons a year. Summer is better, but the winter is very cold. If there is not enough fiber, you can not make enough cotton clothes. So, the old 100 people It will be frozen to death, so in order to meet the demand for clothing, Great Tang must separate part of the cultivated land to plant mulberry leaves and flax to make silk and linen to meet the demand for clothing.

In this way, the land for planting mulberry leaves and flax can no longer grow food. This poses a restriction on the food. Of course, it takes a lot of manpower to raise silkworms and textiles, which also consumes a lot of manpower. A lot of manpower was sucked on this.

After Li An invented various machines, increased pig iron production, and produced two crops a year, he could satisfy less arable land and produce more food. In this way, he did not have to worry about mulberry leaves and flax looting food arable land, which greatly weakened In addition to mulberry leaves and flax, restrictions on grain arable land.

The importance of fuel, not to mention, the old 100 surnames every day need to eat, and meals must use fuel. Firewood and charcoal have always been the most important fuel for the old 100 surnames.

However, the combustion efficiency of firewood and charcoal is relatively low, and the amount used is naturally large. In this way, the 100 surnames in the countryside have to go up the mountain to cut firewood frequently, which consumes a lot of manpower. The 100 surnames in the city need to spend more Money, the purchase of these firewood, consumption is also not small, and wood is an important material for the manufacture of furniture and furniture, as well as housing. The massive consumption of wood will inevitably restrict the construction of furniture, carriage and houses, and thus restrict economic development.

After Li An came to Great Tang, he first invented Hexagonal Household Coal Briquette, and it gradually became popular, which greatly saved manpower and material resources, and the solar stove that was invented later was even more powerful, you can directly use solar energy to burn water and do There is no consumption of fuel for meals. Although it is not every day with sun, most of the year is sunny. This is undeniable, so at least half of the fuel consumption can be saved. Solve the fuel constraints.

The last major problem is building materials. Building is a necessary facility to maintain human habitation. In the Great Tang Empire, the building is mainly made of wood and stone. Among them, wood is the main material.

Whether it is wood or stone, it takes a lot of manpower to mine, and then it needs to be processed. The consumption of labor and natural resources is very large, and the growth of wood requires a lot of time. The substantial reduction of forest resources has caused serious soil erosion problems.

The Weihe River in Guanzhong and the Yellow River in the Central Plains are muddy rivers. The reason is that human activities are too frequent, and in order to meet their own needs, a lot of deforestation has caused such serious consequences.

Now Li An has invented cement and concrete. In the future, it is entirely possible to use this new material to manufacture buildings, so as to get rid of the huge damage to forest resources.

Of course, these things that Li An invented at present can only ease the constraints of the four major bottlenecks on the imperial economy. There are many aspects that still need to continue to work hard.

And because the role of cement is very huge, so Li An did not hesitate to go to the Imperial Palace in person, in front of Emperor, demonstrate the huge role of cement, in order to obtain the purpose of promotion as soon as possible in the country.

“Your Majesty, the cement is naturally air-dried. It takes a whole day. We will no longer wait here and leave it to these people to watch.”

Suddenly the wind blew, Li An signaled Li Longji to return to Zichen Hall. Besides, Li An still had a lot of words. To face Li Longji, it was inconvenient to speak in places where there are too many people.

“Well, Minister Li comes with me!”

Li Longji gently nodded and took Li An back to Zichen Hall.

“Minister Li, there are no idle people here, what do you have to say.”

Li Longji asked quickly.

“Your Majesty, cement and concrete are extremely important to the Great Tang Empire. This Small Official feels that the states and counties should be informed of the method of making cement, so that all states and counties make cement and put it into use. Wood dependence. “

Li An spoke suggested.

“Reduce dependence on wood? Does Minister Li use cement to build houses?”

“Yes, Your Majesty, using cement to build a house will be more beneficial than using wood to make a house. The house is stronger, not easy to be blown down by the wind, and it is cheaper, no matter how it is calculated.”

Li An spoke out the reason and continued: “Your Majesty, cement has a great effect. It can be used not only to build houses, but also to pave roads, build walls, build bridge piers, etc., especially paving roads. It will make the road easier to walk, and there will be no silt problem in rainy weather. This is why This Small Official wants to build cement workshops in all states and counties. In the future, as long as all states and counties are paved Concrete roads will make it easier to walk, and the transportation of goods will become easier. “

“Paved road with concrete?”

Li Longji frowned and thought about it. Now that the concrete pavement has not been laid, Li Longji is really unimaginable. He does not know what effect the concrete pavement will have, and the cement-made house will be strong. ? Can live?

“Minister Li, your proposal is very good, but I want to see with my own eyes the concrete-made house, the concrete-paved pavement, and the bridge piers. As for the promotion throughout the country, this is not in a hurry.”

Li Longji is still somewhat conservative. He feels that he must first make sure that the cement is really so good before it can be promoted nationwide. Otherwise, once the cement is not as easy to use as Li An said, should he not be blamed.

“Yes, Your Majesty, then This Small Official built a road leading directly to the east outside the Chunming Gate, and crossed Longshou Canal to build a concrete bridge on Longshou Canal. A concrete pavilion and a 2-story building were built across the bridge. Concrete house, please Your Majesty. “

Li An said please.

“Okay, Minister Li is ready to prepare. How long does it take? How much manpower is required?”

Li Longji asked.

“Your Majesty, This Small Official has all the materials, as long as there are 1000 craftsmen, half a month is enough.”

Li An said confidently.

“Okay, after waiting half a month, I appreciate the results of Minister Li. If it is done well, I will consider promoting it throughout the country.”

Li Longji seemed very happy and continued to talk to Li An about various new Research & Development machinery and the construction of 2 strategic railways.

After leaving the Imperial Palace, Li An immediately mobilized 1000 people and used a large amount of carriage to transport a large amount of cement, sand and gravel manufactured at the Research & Development Center outside the Chunming Gate. In addition, in order to prevent construction interference, the Chunming Gate was temporarily closed. , No one is allowed to pass.

Once the materials are prepared, construction will begin immediately. The technical difficulty of building these things is very small. For Li An and the craftsmen, simply is nothing.

However, in order to complete the work as quickly as possible, it is necessary to start construction at several points at the same time, partly responsible for paving roads, partly responsible for the construction of bridge piers and preparing for the laying of bridges, and a small part is responsible for the construction of the pavilion and the two-storey concrete building. There is not a lot of manpower, especially the manpower of the pavilion is only dozens, but the completion within half a month is still no problem.

The work of paving the road is very simple, because this section of road has long been trampled by to-and-fro pedestrians, no need to compact the pavement step, just laying gravel on the pavement, and After laying the crushed stones, sprinkle it with a mixture of sand and cement, but do not add water, use tools to compact, the last step is to lay the mixed concrete.

Because the gravel in the concrete is too heavy, it is difficult to mix with a shovel, and it is difficult to mix evenly. For this reason, Li An has long let craftsmen make a drum mixer, and it is driven by a steam engine. Of course, due to time At present, only 2 machines are made, but it is enough for laying a small section of road.

Before laying the first concrete road, Li An fully considered various situations, such as the thermal expansion and contraction of concrete, the strength of the road surface, whether the foundation is stable and so on.

For the foundation, Li An is confident that there will be no problems, and the strength of the concrete has been tested. As long as the craftsman works carefully, there will not be too many problems. In order to combat the road cracks caused by thermal expansion and contraction, Li An adopts the method of surface embossing, leaving a gap every 5 steps, in this way, it can greatly reduce the occurrence of cracks on the road surface and ensure the appearance and practicality of the road.

The craftsmen responsible for the construction laid each section of the road exactly in accordance with the requirements of Li An, from laying the gravel at the beginning to leaving the last vacant space, all of which were strictly in accordance with the requirements, and did not dare to violate anything. .

The construction of the bridge piers is not too difficult. First use the pre-made concrete pillars to drive into the mud and enclose a circular area, and then pour the concrete into this area to form a strong bridge pier, and in order to increase the strength , Li An used a long iron rod to act as a steel bar, and the effect was naturally better than none.

After the three bridge piers were all solidified, the steel concrete deck was officially laid and was soon completed.

The concrete pavilion is a small project, and the completion is the fastest. It just needs some modification, but it takes a lot of time.

More than 2 people were employed in the 100-storey concrete house, and the progress was relatively fast, but it was the last one completed.

These two-story houses are not large in size. There are only 2 houses on the 1st floor, including a staircase, 5nd floor is less, there are only 2 houses, and a large terrace is left on one side. landscape.

After all of this was completed, Li An inspected it personally, expressed satisfaction with the construction results of the craftsmen, and only reported it to Li Longji after hanging for a day, and asked Li Longji and the ministers to visit to inspect the cement The use of concrete and concrete will eventually be promoted throughout the Great Tang.

Li Longji took the pace, and under the protection of a large number of guards, he departed from Daming Palace, proceeded along the Jiacheng, and finally reached the Chunming Gate.

At the moment when the Chunming Gate opened, Great Tang Emperor Li Longji took the Civil and Military 100 officers of the Imperial Court, stepped out of the city gate, and saw the roads, bridges, pavilions and houses built by Li An.

This kind of thing that has never appeared has left a deep impression on them. The road is smooth and hard, the bridge is thick and thick, and the gazebo and house also give people a strong feeling.

Two rows of Yulin generals are lined up next to the road to ensure the personal safety of Emperor and the ministers. Farther away, there are also a large number of soldiers and horses to maintain order and block idlers from entering.

Li Longji walked in the forefront, Li An accompanied him, half a body slower than Li Longji.

“It’s a good job. The road is very smooth and looks very strong. What is the purpose of the horizontal line above, and there are many gullies that are dry and so on?”

Li Longji walked on the concrete pavement and felt very solid, but he was curious to see the horizontal lines and ravines on the pavement.

“Your Majesty, this is to prevent cracks on the pavement. Without these things, there will be many cracks on the pavement soon, which will affect the normal use of the pavement.”

Li An hurriedly explained and told Li Longji the role of pavement cracks and ravines.

“Minister Li, in the middle of this pavement, why draw a long line of yellow lines, does it also play an important role?”

“Yes! A good road, why draw a yellow line in the middle.”

A minister found a yellow line in the middle of the pavement, questioned it, and resonated with many ministers.