Destiny Only Han

Spring is warm and flowers are blooming, and wild geese return to the north.

In the western suburbs of Chang'an City, next to the Changchi Lake in Shanglin Garden, fishes and kites are flying, willows are swaying, and crowds are surging.

It has been a month since the Weishui East Bridge was opened to traffic, and the people of Chang'an found another chance to have fun.

steam barge.

It is said that this kind of boat can run fast in the water without sails or paddles, and can even swim upstream in turbulent currents!

Although everyone has seen the powerful steam pile driver when the bridge was being repaired, most of them are skeptical at the moment. Many people who rely on the old and sell the old are even clamoring that they eat more salt than rice. The steam barge is just a trick, sure. There are warlocks like Xu Fu who are confusing the public!

But doubts belong to doubts, and it does not prevent the empty alleys on both sides of Changchi at this moment, rubbing shoulders.

At the corner of Changchi, Liu Ying led dozens of top students from Dahan Public School and Vocational Technical College, who were doing the final inspection on the steamship.

Today, this boat uses a small steam engine with a power of no more than fifty horsepower, which turns gears to drive two propellers. The steam engine is installed at the bottom of the hull, and the transmission shaft extends out of the hull from below the waterline, and four blades are connected to the end , in order to be able to navigate inland rivers with complicated water conditions.

In order to save costs and promote this kind of steamship to all parts of the country, Liu Ying specially opened a production line for consumables such as propellers, that is, let a skilled blacksmith make a set of samples according to the drawings, and then turned sand to cast the mold , direct mass production.

As for the tolerance, it is also easy to solve, just burn red and start knocking, the big hammer is eighty and the small hammer is forty, or a few times will be fine...

Simple, rude!

Although it affects the service life of the product, if a set of products is not broken after decades of use, the factory will close down...

Considering the heat dissipation of the drive shaft, Liu Ying uses a liquid oil seal with circulating cooling. The sealed oil tank is set above the propeller drive shaft, and the oil is slowly injected by gravity.

This not only solves the water seepage problem of the transmission shaft, but also the oil itself can be recycled and reused after cooling.

The oil used is castor oil, which is a helpless choice before the oil industry is mentioned.

Well, castor is a species native to Africa. At this time, it has naturally expanded to the Indian subcontinent. Liu Ying brought those tributary countries in Southeast Asia back, and then introduced it to all parts of the country for the purpose of extracting castor oil.

As for the planting of castor, there is actually no technology at all. After all, this kind of thing can be seen everywhere in the wild in most parts of the country, and its growth is particularly lush...

From the information Liu Ying learned, the oil cake left over from castor oil is not only rich in nitrogen, phosphorus, and potassium, but also a good organic fertilizer, and can be used as feed after high-temperature detoxification, which is suitable for industry and agriculture.

Importantly, castor oil can also be used as industrial oil, so that the number of industrial whaling can be reduced, so that future generations can only see this kind of elf in the sea in the herbarium.

After listening to the students' report that the inspection was correct, Liu Shengmu Ying waved them to start the ignition, and walked to the other side, preparing to go to Liu Bang, who had heard the news from nowhere and came to join in the fun.

Well, the reason for defending against Liu Bang alone is actually very simple. The old man is very curious. He ran over excitedly at this moment, and he must want to take a plate of this novelty big guy with his own hands.

Therefore, Liu Ying can never do what he wishes!
It's not just that his rebellious period has come. The important thing is that although Liu Bang is not a landlubber, he has no experience in sailing a boat. , for the sake of assassinating the king, it would be bad to get the position ahead of time!

Based on Liu Ying's understanding of his beautiful little mother who is good at singing and dancing but has a particularly clear brain circuit, the other party will definitely do this!

Even if, she will invite Lu Zhi's endless revenge!
"Dad, why are you here?"

"Don't worry about it, let's go and see the new stuff you made!"

Liu Bang strode forward, but suddenly felt a tightness around his waist, and he seemed to be standing still.

He lowered his head, took a closer look, and found that Liu Ying was lying on his body, hugging his waist, and pushing him back hard.

If it was a normal person, he would either ask a few questions at this time, or follow Liu Ying and walk backwards, but as the saying goes, it is not that the family does not enter the house, and Liu Bang's brain circuit is quite strange.

He chuckled, and began to wrestle with Liu Ying on the spot...

I'm really convinced by this old sixth...Liu Ying tried her best, but she still retreated steadily.

After all, Liu Bang was an emperor on horseback. He was a knight-errant with a sword in his youth, had a family in his middle age, and worked as a coolie in the farmland. Although he was old at this time, his strength was not something Liu Ying could compete with.

So, in Liu Ying's full expectation, his reinforcements arrived.

"Dare to bully my dear grandson, seek a beating!"

"Ouch!"

..........................................

In the stands, Liu Ying and Taigong Liu got together, pointing from time to time, showing off his new invention to Taigong Liu.

The Emperor of the Han Empire, who had been taught a lesson by the Supreme Emperor, half-undressed, gritted his teeth angrily at Liu Ying's back, and asked Lu Wan to rub the ointment on his back.

After all, Liu Taigong is also an old ranger, and he has done farm work all his life, so his strength is ridiculous!

In the past few years, Liu Bang has been pampered and pampered. He often soaks in hot springs and takes baths with various materials.

"...Well, this is the principle that steamships can swim upstream!"

While Liu Taigong was confused but full of praise, Liu Ying showed off loudly, looking into the distance with a proud face: "Where the steamboat goes, countless trackers will lose their jobs!"

"That's right, that's right, it should have been like this long ago!" Mr. Liu was full of praise, and cheerfully stretched out his big wrinkled hands to touch Liu Ying's head, with a kind and gratified expression on his face.

The ancients often said that there are three sufferings, punting a boat, forging an iron, and grinding tofu.

Punting a boat, sailing in the wind and waves, there is a danger of capsizing and death at any time; forging iron, enduring the heat day and night by the furnace, living is like going to hell; selling tofu, sleeping between three and five, living like a donkey, but can only Just make ends meet!

And the trackers lived a worse life than them.

When pulling the fiber, the waist of the tracker is bent at 90 degrees, and he even pulls the boat with his hands and feet in a posture that is almost crawling. Can rely on the sweat of these trackers!

Therefore, many old trackers suffer from serious diseases such as rheumatism, skin diseases and other muscle strains.

Even after the founding of New China, most of the trackers who worked in the Three Gorges could not live to be 40 years old!
Well, many people say that the life expectancy of the ancients was no more than 30 years old. This actually refers to an average life expectancy, which is lowered by those babies who died young and many people who died unnaturally...

Just like the average salary standard released by later generations, it is the data that is mostly leveled by a very small number of high-income individuals.

Take a chestnut.

For example, the tyranny of Qin that many people do not want to believe, and the rule of three generations in ancient times.

In the age distribution of the death of the population in the Qin tombs at the bottom of the Gaoling slope in Xi’an, the proportion of dead bodies in the prime of life, that is, between the ages of 24 and 35, was 51.18%.

In the Yangshao site, the proportion of the population who died in the same age group was only 7.04%!

Most of the people died in the range of 36 to 55, accounting for 71.42%, but don't forget, this is a site from 5000 to 3000 BC!

This is the normal life span of people at that time!

Therefore, Liu Taigong, who is used to seeing the sufferings of the world, traveled nearly a hundred miles in a carriage to see Liu Ying's steamboat that can replace human power and go upstream!

As for those unemployed trackers and boatmen, there is no need to worry that they will not have a way to support their families.

For example, you can work as a worker in a workshop. If you are worried that you will not be able to learn the skills, you can also sign up for road repairs, railway repairs, logging, or work in plantations. There is no technical content. You just need to be willing to endure hardship and work hard. .

After all, in a rising economy, everyone can always get a job that can support themselves and their families as long as they are down-to-earth and diligent.

In the long pool, as if to testify to Liu Ying's bold ambition, the steamboat emitting thick smoke made a loud and clear whistle.

beep!
In the midst of everyone's attention and the roar of the steam engine, a steamboat that was not very tall and stalwart began to wobble on the water like a baby learning to walk.

At first the speed was very slow, but it got faster and faster, faster and faster, cutting the wind and waves, galloping back and forth!
"So fast!"

"It's almost as fast as a galloping horse!"

"Is this a boat?"

"Do you think there will be someone pulling it under the water..."

"It's possible, but I don't think it's a human, it should be a Kun! It's that kind of legendary big fish!"

……

Silly Bo Yi... Liu Ying cursed in her heart with a black face, turned her head to look at Grandpa Liu who was also full of confusion, and muttered in a low voice:
"It's empty, of course it runs fast! If you pull a string of loaded barges behind, the speed will slow down..."

"Well, this kind of ship can not only run on its own, but also pull a bunch of barges. The barges are connected end to end, and they can carry [-] to [-] catties at a time!"

This is what Liu Ying values ​​most.

Now the canal of Honggou is still in place, and the goods sent from Guanzhong can reach the Huaihe River through the Yellow River, and then go directly to the Yangtze River system, and vice versa!

So, this is not just a steamship, but a water train, a water train with river water as its track!

Therefore, Liu Ying felt that if several canals were built to the north of the Yellow River to connect the existing water systems, then Guanzhong would be able to go directly to Yan Guo through waterways!
This is the Beijing-Hangzhou Grand Canal of later generations.

Well, the Sui and Tang Grand Canal built by the ten philosophers of Wangmiao was called the Sui and Tang Grand Canal, which connected to the south of the Yellow River. In the Southern Song Dynasty, because the northern land was occupied by the Jin people, it was already abolished.

The real Beijing-Hangzhou Grand Canal was built by Kublai Khan...