This wrought iron cannon was named the Crouching Tiger Cannon because of its appearance that resembled a lying tiger.

Dian Wei suggested that the little cannon look like a little piglet, "It's better to call it a piglet cannon." ”

Lu Bu gave Dian Wei a big wink, and the thing started to be naughty again.

In the eyes of outsiders, the cost of the Crouching Tiger cannon is very high, but in Lu Bu's opinion, the cost of such a small iron cannon is only a few hundred Wen, which is far lower than the cost of a giant crossbow.

Later maintenance is nothing more than cleaning the gun chamber, brushing paint, and protecting the gun from rust.

Lu Bu gave an order to Zhang Tiezhu: "First produce 500 Crouching Tiger cannons, and the artillery shells should also be sufficient." ”

Zhang Tiezhu was stunned: "Lord, is it too much." I mean, if it doesn't work, it won't be a waste. ”

Lu Bu shook his head: "This kind of small artillery production process is simple, once it comes out on the battlefield, other princes can imitate it in a few months, so we must have an absolute advantage in quantity, and use the advantage of steel production to pull away the comprehensive strength." ”

Zhang Tiezhu said that he understood and immediately began mass production.

The method of steel mold casting is adopted, which avoids the disadvantages of sand mold production.

The Crouching Tiger Cannon could only be regarded as a small attempt, because the stock of sulfur was not large, and only after the sulfur ore was mined did Lü Bu plan to produce a larger scale of artillery.

In a mountainous area in the western part of Jinan County, there are at least 100 hydraulic mills on the mountain stream.

Flour is milled in every mill, and these mills use water as the power to continuously grind sorghum rice into sorghum flour.

This is the army's logistics department, which originally required more than 100 donkeys to do the work, but now more than 100 water conservancy mills do it themselves.

As long as the water in the stream is uninterrupted, the mill never stops.

Dian Wei was stunned to see all this, and the other guards who came with him were also stunned.

Dian Wei clicked his lips and spoke for a long time.

"Lord, the nests we usually eat are all ground by the mills that have become fine?"

Lu Bu almost laughed: "This is a water-powered mill, there is a water wheel under the mill, and the water wheel drives the grinding disc above to grind the surface." ”

Lu Bu pointed to the water wheel under the mill and asked Dian Wei to take a closer look, and Dian Wei realized that it was the role of water power.

Lu Youcai came to Lu Bu's side and waited for Lu Bu's instructions.

Lu Bu was very satisfied: "Talented, the wages during this period of time have not been taken in vain, except for those small farm tools, the water-powered mill is an invention that has been passed down for centuries, and it will give you a monument to pass on to future generations." What more rewards do you need, though? ”

Lu Youcai scratched his head: "I have what I want, and I can't spend the money." I don't need anything, if the lord wants to reward, just reward me with two little donkeys in my hometown, I'm not at home, no one to help them work. Let these two donkeys do their filial piety in front of their knees. ”

"Okay, reward your donkey with two heads and fifty acres of fertile land. In addition, I will arrange a daughter-in-law for you, marry a wife and have children as soon as possible, so that there will be successors. ”

The hydraulic mill was another huge invention after the water wheel, and it was popularized in a lot near the river.

In particular, some workshops with water-powered mills as the main tool are derived from water-powered rice machines and so on.

According to Chen Gongbao's development plan, as long as conditions permit, each village will produce several units to supply the people in the village for crushing and processing.

Qingzhou and Xuzhou will develop about 10,000 hydraulic mills in one to two years, which is enough to save a lot of manpower.

If the water-powered mill wasn't enough to make Lu Bu stand out, then something else certainly would.

In the summer, Lu Bu was overjoyed to find that potatoes could be exchanged in the system.

As we all know, potatoes are sown with potatoes as seed blocks.

At that time, Lu Bu exchanged thousands of catties, splashed water and used the sun to promote germination, and then cut pieces and sowed more than 100 acres.

I didn't expect it to be reluctantly successful in the autumn, why do you say that it was barely successful, because the yield was low, and the yield per mu was only 4,000 Han catties, which was far lower than Lu Bu's expectations.

However, autumn potatoes are generally reserved for seeding, and the low yield is barely acceptable.

These more than 100 acres of potatoes were like precious treasures, which were put into the heavily guarded cellar by Lu Bu, just waiting for the spring sowing next year.

Assassinating the Shifu, Lu Bu hummed a little song, asked the chef to fry a plate of shredded potatoes, and had lunch with Chen Gong.

Chen Gong looked at Lu Bu very strangely: "Lord, you are not so happy to take Chen Liu, is this thing really so precious?" ”

"It's different, taking Chen Liu's millions of acres of land and hundreds of thousands of people just weakens Cao Cao and avoids making him too inflated. But this potato is different, and it can prevent the locust plague completely. ”

Chen Gong was stunned for a moment and took a bite of shredded potatoes: "Although I admit that this potato is quite delicious, why can the locust plague be completely avoided?" ”

"Gongtai thinks that herding chickens can cure locusts, and artificial extermination of locusts can completely kill locusts?"

Chen Gong shook his head: "No, it can only be regarded as relief and control." If you encounter more locusts, you will have nothing left to eat. ”

"That's it, locusts need temperature to hatch, and disasters usually occur around the time of the wheat harvest. Potato planting has very low temperature requirements, it can be planted as soon as it is spring, and the wheat harvest is basically completed before the harvest, even if it is not harvested, it is fine, the locusts eat the potato leaves, and the potatoes are in the ground. ”

Chen Gong suddenly realized that this was the early sowing of things, avoiding the high season of locusts, and it grew in the soil, so locusts could not attack.

"Some time ago, the yield of the harvest test was okay, and the yield per mu was more than 4,000 catties, which is quite high."

Lu Bu shook his head: "That's because the general didn't plant it well, and the normal yield of potatoes per mu should be more than six thousand catties." Please think about it, if the people store thousands of catties of potatoes at home, even if they encounter a locust plague, they will not starve to death, and in this way, our population will usher in a big outbreak. ”

Chen Gong sincerely admired Lu Bu, promoted rice in the north, and now he is making potatoes.

The so-called prosperous era means that the people can barely eat enough, and now Qingzhou has done it.

And he is the founder of this prosperous era, Chen Gong is happy when he thinks about it.

"Don't be too happy too early, at this stage it is still dominated by wheat, rice, sorghum, soybeans, and millet. It will take at least several years for potatoes to develop, and during this time, all the government has to do is to encourage the people to get married and have children, grow more trees, and grow more food. ”

Chen Gong is not in a hurry, there has to be a process for everything.

Taking rice in Jinan County as an example, in the first year of rice planting, the people had to coax and let the people plant.

But after seeing the yield of rice, many people want to switch to rice themselves.

The promotion of potatoes also has to go through such a process, at the beginning of everyone recognized, and then it will be slowly promoted.