The sharp weapon in Luo Youdu's mouth was naturally black gunpowder.
As one of the four great inventions of China, black gunpowder has always been ignored.
The main reason is that the birth of black gunpowder was accidentally discovered when a Taoist priest made an error in the formula and exploded while refining elixirs.
The Taoist priest has not developed in this direction at all, and even he himself does not know the principle of black powder explosion and the real material of black powder.
The formula of black gunpowder is simply mononitrate, disulfide and charcoal, but when Taoist priests make elixirs, they don't just use these three materials. They also add cinnabar, gold, realgar, zengqing, stone gallbladder, arsenic and other deadly materials.
stuff...
Therefore, after the explosion, in addition to saltpeter, sulfur, and charcoal, various minerals were added to the black powder formula.
This also resulted in the formulation of black gunpowder in this era being extremely impure, and its power was naturally greatly affected.
Luo Youdu is not a professional, and he remembers the detailed proportions of black gunpowder clearly.
But as long as you know the formula and the ratio, it is easy to test.
After Luo Youdu came to the throne, he asked the Ordnance Inspector to study black gunpowder and the equipment created around black gunpowder.
The formula and proportion of black powder were successfully experimented in the second year after he ascended the throne.
Black powder also played its due value.
Around black gunpowder, the Luo-Yu court also developed rockets, fireballs, caltrop cannons, leather cannons and other firearms.
The actual combat capabilities of these gadgets are average, and the conditions for use are also very harsh, far from being able to influence the situation of the battle.
But it is extremely bluffing and makes a lot of noise. When used, it is earth-shattering, but the actual effect is far less than expected.
However, as the first batch of realistic firearms, it is still very useful to use them to bluff people.
For example, during a night attack, various deafening explosions resounded in all directions.
How can a country bumpkin who has never seen the world cope with it calmly?
Luo Youdu has always regarded black powder and the firearms derived from it as military secrets, and planned to use them in the decisive battle with the Khitans.
At this moment, hearing the mountains and gravel, Luo Youdu immediately thought of black gunpowder.
The black powder on the battlefield is limited by the changes in terrain and war situation, but for digging mountains, gravel is more than enough.
Although Wei Renpu was the prime minister, he was affected by the confidentiality system and did not know about the sharp weapon black gunpowder. However, with his understanding of Luo Youdu, he knew that the king in front of him never believed what he said. He was greatly moved and said: "There is such a sharp weapon. It can be used."
Open a canal directly from the northern foot of Guangwu Mountain. This way there is no need to bypass Guangwu Mountain, and it will not affect the fields in nearby towns. However... Your Majesty, the soil at the northern foot of Guangwu Mountain is hard, dry and difficult to dig, and there are many huge rocks. It is very difficult to dig.
Human power can shake it.”
Luo Youdu said: "The imperial court has developed a sharp weapon that is powerful enough to crack rocks and break earth. It was originally intended to be used on the battlefield. In this situation, it is best to use everything to open channels for the people."
Jia Jue's eyes flashed with brilliance and he hurriedly asked: "Can you let me see the power of sharp weapons? If the effect is great, we can re-plan a more convenient diversion canal, which will avoid affecting more people."
"Of course you can!" Luo Youdu said without hesitation: "I will now order the Ordnance Supervisor to arrange a blasting experiment. By the way, the sharp weapon I am talking about is called black powder."
"Also, when designing and planning river channels, we can use the method of using rivers to control rivers and using water to attack sand."
Wei Renpu stood up and said, "Your Majesty, please give me a clear explanation."
Luo Youdu said: "The reason why the Yellow River is difficult to control is mainly due to sediment. In a bucket of water, sand ranks sixth. But where does this sediment come from? It is nothing more than the Loess Plateau... In the upper reaches of the Yellow River, the water is rapid and carries sediment.
And down. In the middle and lower reaches of the Yellow River, the water is gentle. If the water is slow, the sand will stop, and if the sand stops, the river will be full. Once the Yellow River is full, it will naturally overflow and become a disaster, harming the people on both sides. Build embankments to contain the water and use water to attack the sand.
, causing the Yellow River sediment to flow straight into the sea."
Wei Renpu said with emotion: "This method is wonderful. If it can be successful, it will be beneficial to the future."
Jia Jue even whispered: "I wonder who thought of this method? Such a wonderful idea is no less than that of Wang Jing in the past."
Luo Youdu thought for a while and said awkwardly: "I think about things every day and dream about things at night. This is how I get what I have in my dreams."
He really wasn't lying.
The method of confining water to attack sand was a river control plan proposed by Pan Jixun, a water conservancy expert in the Ming Dynasty. He managed the Yellow River four times in his life and achieved remarkable results.
If there is a saying about Wang Jing of the Eastern Han Dynasty that "Wang Jing governed the river and was fine for a thousand years," then a thousand years later, it was Pan Jixun who controlled the river and attacked the sand.
Even in the new century, the concept of confining water and attacking sand is still used to manage the Yellow River.
In addition to dealing with government affairs, Luo Youdu has been thinking about the management of the Yellow River recently. He has not even gone to the harem and read 300 articles on river management.
Maybe God missed him sincerely and dreamed up a story.
It is said that a foreigner came to the Qing court with modern scientific knowledge from the West, brandished foreign ink, and gave advice on how to regulate the river. He proposed the plan of "double embankment system, building slow-down embankments along the river embankments, and diverting sediment from the Yellow River to build up the embankments." The paper was compiled and published, attracting attention from the international water conservancy community.
Then I discovered that I had lost the wisdom of ancient Chinese people from three hundred years ago...
A dream about being slapped in the face.
But in fact, this is a true thing in history, but the human brain has limited capacity, and the brain will automatically filter out many unimportant things.
The human brain is different from a computer. If you delete it, it is gone. Things hidden deep in the memory may not be remembered for a lifetime, or they may be recalled inexplicably at a certain point in time.
This was the case for Luo Youdu. His mind was filled with the Yellow River. The memories hidden deep in his brain during his sleep flashed through his dream.
Pan Jixun's method of restraining water and attacking sand also comes to mind.
However, with regard to the current accumulation of sediment in the Yellow River, it is not enough to attack the sediment with water alone. The accumulation is too much and too thick.
Dredging and drainage is essential.
Wei Renpu and Jia Jue looked at each other in shock. They didn't expect that the extremely feasible water control method of "confining water to attack sand" was actually obtained in a dream?
After a long while, Wei Renpu said with emotion: "Your Majesty is truly a god."
Luo Youdu blushed a little, said a few perfunctory words, and led the two of them to the weapons inspection room, where they saw the power of black powder.
"Bang!"
With a loud noise, the sky was filled with black smoke, and huge rocks were torn apart and scattered in all directions.
Wei Renpu and Jia Jue saw the power of black gunpowder for the first time, and their eyes widened.
Wei Renpu came back to his senses and said impatiently: "Your Majesty, what is the value of this thing?"
Luo Youdu said calmly: "Enough!"
He was extremely strict with the formula of black powder because the materials required for black powder were so common and widespread.
As long as you know the recipe proportions, it's easy to gather the ingredients.
Upon hearing this answer, Wei Renpu immediately said: "Your Majesty, please ask Xu Chen to resign, and then we will assemble the action team and re-plan the plan."
Luo Youdu nodded and said: "Go, remember one sentence, river management is a major matter for the country, I will fully cooperate with you, and you will be given priority in all matters of corvee and supplies."