The city wall of the Marquis of Gonggao is not high, but it is also an ancient wall mottled, destroyed by time out of the vicissitudes of life, and the occasional moss under the city tells the traces of the passage of time.

The Gong Gaohou Mansion couldn't be opened, so Han Yan had to take a group of people out of the city, build a shed in the shade under the city wall, and let the six strong men take local materials and cut elm wood to bring back.

Han Yan told the carpenter about the keel waterwheel he wanted to build...... In modern parlance, it's called a rollover. Prepare to settle on the bank of the Zhanghe River to solve the problem of irrigation of farmland for the people of Gonggao Marquis.

The overturned car first appeared in the Eastern Han Dynasty, and the Book of the Later Han Dynasty recorded that Bi Lan made a rollover, and Ma Jun in the Three Kingdoms period perfected it, and the late Han Dynasty regime in the east should have appeared this thing.

Han Yan hadn't read the history books, and he couldn't remember them after reading them, but he was sure that the Han Dynasty did not overturn.

For this automatic water storage and irrigation tool, the carpenter showed great enthusiasm and his eyes were shining......

While the carpenter was making the overturned cart, a large amount of wood chips and bark would be left, and Han Yan did not let them be thrown away, but instead put them in an open field like a treasure, and asked the coachman to help him go to the city to buy hemp heads, rags, old fishing nets and other things.

Half a month has passed in the blink of an eye.

Mid-July.

The mountains and rivers, faith, and the Han are all extraordinarily high-spirited.

Life, youth, and everything are quite vibrant.

It was probably the arrogance of the head of the Hei family in Anlu County who sat on the emperor's frame that stimulated Emperor Jing of Han, so he issued an edict.

"Officials are role models for the people, and their clothes and cars should be commensurate with their positions. It is now stipulated that any rider and attendant who is not in the proper garment of his or her status shall be reported to the competent authority, and the lieutenant in charge of the title and the right and left internal historians shall be prosecuted for non-observance of the officer's body. ”

An edict has made the world's heroes and powers somewhat restrained, but all those who dare to transgress the system are all lords with titles, ordinary people will never dare to play like this, and they do not have the financial resources to play the emperor's prestige.

Han Yandang has always paid attention to Han Yan, and he really doesn't bother to care about this evil grandson's early departure and late return.

If Han Yan went to the street to molest a woman from a good family, Han Yandang would probably come forward to save him, and then take him home and break his leg, leaving this evil grandson paralyzed in bed for the rest of his life, for the ...... I don't have to watch you dangle in front of my eyes again. Upset.

Gong Gaohou Mansion.

The carpenter does all the rough work, and Xi'er only goes out of the city every day to help Han Yan deliver food, and spends the rest of the time in the house.

She didn't think much about Hou Ye's summons.

Han Yan was a servant of the wind and dust, and he only came back a few days ago, and he wanted to go to Chang'an to contact Zhou Yafu's old ministry to jointly intercede with the emperor, but he was persuaded to come back by someone sent by his family halfway through.

Compared with Han Yan who was beside Liu Che, the Emperor of the Gonggao Marquis Kingdom was far away, and even if Han Yandang was stunned, he didn't think that he was better informed than that evil grandson.

Han Yan's words explained the inside story thoroughly, Your Majesty wants to clean up Zhou Yafu and pave the way for the crown prince, don't say that you are a bow marquis, even if you come a hundred more, you are useless, this is a major matter about the safety of the country, no matter how deep the brother's affection is, it is not as important as the Han Dynasty.

Thinking of this, Han Yandang sighed softly, looked at Xi'er under the hall and asked, "When I came back, I saw Han Yan building a shed outside the city, and he and a group of people were not doing their jobs properly and started a carpenter's business, what did he want to do?" ”

"Iwashiko said he was going to cut down wood into a wheel and build a super big wheel to put in the river." He gestured with his hands outstretched.

"What's the use of this wheel?"

"Hmm......" Xi'er thought for a while before replying: "The slave maid heard from the prince that this wheel can solve the problem of irrigation of the fields of our Gonggaohou Kingdom. ”

"Oh." Han Yandang picked up the teacup, sipped the tea foam with the tea lid, took a sip to moisten his throat, smiled indifferently, and thought to himself that if you have this ability, I will have to look at you highly.

"I also heard that he asked people to collect things in the city, and they also used to make wheels?"

"The son didn't say it, and the slave didn't know either, but when the slave and maid brought food to the son, they saw that he soaked the things he had collected, as well as sawdust and bark, in a large vat to make it swell, and then chopped and mashed it with an axe, washed it many times with water, and then took boiling water and steamed it, and then washed it several times, which was very troublesome."

Xi'er told what he had seen and heard in the past half a month, and he was confused and didn't know what Han Yan was going to do, but looking at his posture and seriousness in his eyes, it seemed that he was going to do something earth-shattering.

"Let him go, something that doesn't make a climate, he doesn't accompany the crown prince and has a good relationship with the prince of the Han Dynasty, but lives in poverty outside the city as a vulgar craftsman, hum." Han Yan was angry and snorted coldly.

But after humming, he suddenly felt that it was not right, he didn't go out in vain this trip, he heard some things about Han Yan on the way, although some fame is insignificant, it also shows that this evil grandson is not a fool......

After pondering for a while, Han Yudang decided to go outside the city to see for himself and find out.

"Could it be that he can really make water grow in the fields?"

With this in mind, Lao Han rode out of the city in a carriage.

In the middle of July, it was very hot time, and there was not a single cloud in the sky, but occasionally a gust of wind carried the heat wave, blowing up the rolled leaves to the bottom of the city, where it swirled in circles until the hot wind was weak.

Han Yan finally took off his gorgeous brocade robe, couldn't stand the heat, changed into a thin undershirt, and tirelessly experimented by the vat.

He has boiled the bark, hemp and other things into fine fibers, and then he has to mix the fine fibers into a suitable slurry with water, and then use a leaky paper mold to get the pulp, which is dehydrated and dried before the paper, which is a long way to go.

At the gate of the city, Han Yan was also stunned when he saw that he was so serious, and then looked at the giant wheel that already had a prototype, and the keel waterwheel that looked like a long dragon, and suddenly felt a trace of joy in his heart...... Maybe he will lose, maybe he can really solve the problem of irrigation in the fields of the Marquis of Gonggao.

No, not only the Marquis of Gonggao, as long as this giant ship has a role, the farmers along the river can benefit, this is a big project that is beneficial to the people of the world.

"Grandpa." Seeing that Han Yan was standing at the gate of the city and watching, but did not look closer, out of politeness, Han Yan stood up and said hello.

"Can this thing be done?" Han Yongdang stared at the wooden giant wheel that was nearly ten meters wide, although it was only an outline, it was enough to shock people's eyes.

"If nothing else, sure." Han Yan said, wiping the sweat from his forehead with a hand towel.

The carpenter and the servants hurriedly ran over to salute Han Yandang, very respectful.

"Let's all go get busy, I have a few words to say with Yanzi." Han Yan didn't like to see these people very much, waved them back, and with the yearning for the past in his eyes, he slowly asked Han Yan: "Is Tiaohou really hopeless?" ”

"His merits are high, his personality is conceited and reckless, His Majesty doesn't take him, how can the crown prince control the world after he succeeds to the throne." Shaking his head, he scooped a scoop of water from the tank and poured it into the basin to increase the moisture of the fine fiber slurry, because it was too thick to soak out of the paper mold.

Han Rongdang: "When do you plan to return to Chang'an?" ”

"I can't say, there are as many noble relatives in Chang'an as a dog, although I am covered by Liu Che, but I don't have any foundation myself, it all depends on his grace. When I have the foundation and can not be chopped up and fed to the dog without being disagreed, I will go back. ”

"......" Han Yu was speechless, even I, a prince, have to go to Chang'an, and when you have a foundation, probably the sun will come out from the west. I think it's better for you to stay with the crown prince. ”

"You don't understand."

Han Yan didn't want to explain anymore, he just covered his head and did experiments, and there was a faint hope in his heart fermenting......

Han Yan stopped persuading, because he couldn't understand Han Yan anymore, and because there were soldiers galloping on horses in the distance, as if there were 100,000 urgent events.

"Report ......"

The soldiers' hurried trumpets were poignant, echoing outside the city gates.

"The Huns invaded Yanmen, killed to Wuquan, and then went straight to Shangjun, took the Yuan horse and left, my Han soldiers died more than 2,000 people, and the blood flowed like a river!"

"What?" Han Yandang's eyes glared angrily, his blood surged, and he gritted his teeth.

"The Huns deceived people too much, deceived people too much!"