But with each explosion, they became more and more skilled in controlling the quantity, and their understanding of black powder also improved.

As his proficiency deepened, the weapons supervisor unexpectedly became enlightened and invented the thunderbolt and the rocket, two firearms that were very useful in actual combat.

Hongtianlei was inspired by flying rocks that injured people.

Rocket, on the other hand, knows enough about black powder.

There were rockets before, but those kind of rockets had explosives tied to the arrows. The explosives were ignited and then shot by archers, causing explosive damage.

Today's rockets purely use the kinetic energy generated by flame jets to launch arrows containing bombs, just like the rocket firecrackers played in childhood.

Luo Youdu, who was sitting in the capital, couldn't help but laugh and cry when he saw the firearms delivered by the weapons inspector. He had never expected such an effect.

Mid-August of the first year of Yongjing's reign.

The northern foothills of Guangwu Mountain.

"boom!"

With a loud noise of the earth shaking and the mountains shaking, thick black smoke rose into the sky.

Countless gravels scattered in all directions, accompanied by bursts of shouts.

Wei Renpu stood on a high place and sighed: "Even though I have seen thousands of explosions, I still can't help but be shocked. Without such a magical thing, how could the canal opening process be so fast?"

Guo He, who was standing behind Wei Renpu, was also filled with emotions.

The method he proposed to regulate the river was based on his father's ten years of investigative experience. He himself spent a lot of time and energy running back and forth to research the plan, and he was confident that it was the best choice.

But the emergence of black powder allowed them to blast a road through the mountain stream to serve as a river, avoiding key villages, towns and fields.

This was something he couldn't imagine...

But the fact was happening before his eyes, and there was no room for doubt.

Guo He echoed: "This is the power of science and technology that your Majesty has repeatedly explained."

Wei Renpu nodded and said: "It's because we are ignorant. Fortunately, His Majesty is wise and sticks to his own opinions. We are lucky to meet such a holy Lord in our life."

Luo Youdu specially coined the term science and technology, classified many things in the Ministry of Industry as science and technology, and encouraged the development of science and technology.

If someone changes technology, Luo Youdu will even edit the book himself to reward him.

Even if the literati wrote excellent articles or the generals won the battle, they could not get such treatment.

Naturally some people feel uncomfortable.

Wei Renpu also believed that the scholar-peasants, industry and commerce were placed behind the scholars-peasants, and Luo Youdu was a little biased in attaching so much importance to strange skills and tricks.

We can see the power of black powder and the popularity of iron tools...

Drilling canals requires a lot of tools.

Luo Youdu ordered the Ordnance Supervisor to suspend the forging of weapons, and requisitioned blacksmiths to use all the iron reserves to make tools such as hoes, picks, and shovels.

Iron ore from Shanxi and Jiaodong is continuously transported to the Central Plains.

Wei Renpu still holds the title of prime minister. As prime minister of the Zhou and Yu dynasties, he had some knowledge of some data.

Wei Renpu of the Shanxi mine did not know about it, but Wei Renpu knew about the iron output of the Jiaodong mine.

When he was the prime minister in the Great Zhou Dynasty, he was responsible for this aspect of work.

According to statistics, the iron output of Jiaodong mines in this half-year is greater than the national iron output in a year.

Although the territory of the Later Zhou Dynasty was not as large as that of Luo and Yu, it still included most of the Central Plains.

The country's output in one year is less than half a year's output in Jiaodong's current mines.

This shows how much impact the improvement of mining technology has brought.

Wei Renpu has realized the changes brought about by technology. If Luo Youdu had not been promoting the development of science and technology, it would not have been possible to dig the Guangwu Mountain Stream in three or four years, let alone half a year.

Guo He also said: "Your Majesty, you are a true god and man."

The two chatted about Luo Youdu for a while, and the topic returned to the project.

Guo He asked: "I heard that other sections of the road are also progressing smoothly?"

Wei Renpu nodded and said: "His Majesty has given us tremendous support, giving people to people and tools to tools. Even if there are small difficulties, they have been overcome with the collective efforts of everyone. If everything goes well, the project will be completed early next year."

He looked at the people carrying gravel in the mountain stream and said: "You have been studying the method of water flushing recently. In two to three months, the dry season of the Yellow River will come. Our action team must get together. In addition to dredging, we must also choose

A place for Huang He to lose weight."

He was in a good mood and even joked.

Just then!

Suddenly there was a bright light between heaven and earth!

Two in one!
Chapter completed!