In mid-September, after half a month of commissioning and installation, the keel waterwheel was finally able to turn in the Zhanghe River.

The 10-meter-tall bike is supported by 24 wooden spokes that radiate out in all directions, like a bicycle wheel that has expanded tenfold.

At the top of each spoke is a scraper and bucket, and when the bucket is lifted up gradually, it will naturally tilt and pour water into the aqueduct to flow into a cistern high on the bank of the river, where farmers can dig a channel next to the cistern and lead to their fields.

Such a magnificent invention, Han Yan directly repaired a letter and sent someone to present it to Liu Che, asking him to help Emperor Jing of the Han Dynasty, and asked to send someone to inspect it, if he felt that he could, he would promote it to the whole world, which could improve irrigation efficiency, increase farmland yield, and benefit the country and the people.

Too womb.

In the scorching heat of September, the weather in Chang'an was like a steamer, so hot that it was breathless, but Liu Che's room was cool and refreshing.

There is a bronze Bingjian in the house, a four-legged beast, eight dragon ears, hooked with cloud patterns, quite exquisite. It's the equivalent of a modern refrigerator, with chilled springs and frozen fruit for use at any time.

That's not all, there are even slaves and maids shaking one-person-high bearings, and there are seven huge fans connected to the shaft, which are created by skilled craftsmen in Chang'an. But I took pity on the slave and maid, and she was sweating profusely......

"His Royal Highness the Prince, Han Yan has a letter." There was a guard in front of the door who reported, his armor was impermeable, and the sweat between his eyebrows was flowing down.

Liu Che was eating cherries boringly, and even the emperor went to Ganquan Palace to escape the summer on this hot day, and everyone stayed at home.

But it's so boring at home...... Therefore, Liu Che often misses his sworn second brother, and if Han Yan is here, he can always think of a way to have fun, and he will not be so lonely.

As soon as he heard the guard's report, Liu Che hurriedly got up and hurriedly shouted, "Submit it quickly." ”

As he spoke, he grabbed a handful of cherries from the bronze ice book and gave them to the guards, "Take them and eat them." ”

"Thank you, Your Highness the Prince." The guard's lips trembled with excitement, and he knelt on the ground and bowed before retreating.

After taking a closer look at Han Yan's horizontal and ugly knife and pen words, Liu Che's face gradually became full of smiles.

"Okay, you little rock, you can't live in peace when you go home, with this keel waterwheel, the people on both sides of the river have increased their harvests, they can afford to pay taxes, and they can be healthy, so I will go to my father to report it."

……

Since the death of Liu Wu, the king of Liang, the king of Chengyang and the king of Runan, have also hung up one after another, and the brothers have passed away one by one, and the era that belongs to them has passed, making Emperor Jing of Han feel that his life is sad, and his physical condition is getting worse and worse.

He could only look away from the mountain-like recital, and he didn't have the physical strength and energy anymore.

But thinking about this life, Emperor Jing is still very pleased, the Han Dynasty is thriving under his governance, the number of people who have been sentenced to prison this year is less than 200, the money in the treasury has accumulated tens of thousands, the ropes that string the money are rotten, and the number cannot be counted, and the old corn in the granary is covered with layers and has flowed out of the warehouse, so that it has to be piled up outside, so that it is rotten and inedible.

Just as he was thinking about his exploits, he saw Liu Che coming in from outside the hall.

"The child knocks before his father."

"Get up." Emperor Jing raised his hand, looked down at his heir, his heart fluctuated, thinking that when I was still the prince, I also bowed to my father like Che'er, but in a blink of an eye, I was old, and there were heroes in the twilight.

After watching it for more than ten seconds, Liu Che was furious, and Emperor Jing asked, "Something?" ”

"Father, Han Yan went home to visit Gong Gaohou, and created a thing called the keel waterwheel, which can solve the irrigation problem of seven hundred acres of land along the river, the farmer's harvest is not good, part of the reason is that the watering is not timely, he wants his father to send someone to see, so that the waterwheel can be implemented throughout the country."

"Oh?" Emperor Jing raised his eyebrows, a little surprised.

The kid with Hu blood has deep eyes, and he is a good horse archery player when he is young, but he didn't expect to be unprofessional, and he didn't read the sage book, but he went home to make inventions and creates, if the people of the world learn from you, and like to be curious and skillful, then who still goes to farm, and what do the people eat?

Hearing that Han Yan was engaged in creation, Emperor Jing's first reaction was that he didn't like it, but this girl invented something that is conducive to agricultural production and can increase food production, do you adopt it or not?

After thinking about it for a while, Emperor Jing looked at Liu Che's eyes with a little eagerness, knowing that this kid was also asking for his life, sighed, unwilling to save his face, and said: "Since Han Yan has this ability, and it is up to you to take care of it, then I will follow his wishes, let your teacher Wei Juan go to Gonggao Marquis to have a look, and consider the students he taught." But ......"

Emperor Jing's face was straight, sitting upright, and his waist was straight.

"You have to be clear that the management of food in the world is the first priority, whether the people are rich or not, whether the people can eat enough, it all depends on agricultural affairs. If there are too many people who are idle and indulged in strange tricks, it will affect agriculture and shake the country's foundation. Moreover, he is the heir of the princes, and he is not loyal to the country, but he does the work of a craftsman, and does not wait for the elegant hall. You ask Wei Juan to tell Han Yan that the crooked spirit cannot be raised, even if he creates the keel waterwheel and benefits the people, I will not praise him, and can only be regarded as a merit and a demerit. ”

"This ......" The young Liu Che bowed his head deeply, afraid that Emperor Jing would see his expression, as the prince of the Han Dynasty, being consistent with the emperor's thoughts is the most important reason why you can ascend to the throne, even if you don't agree with it in your heart, you quickly respond: "The child respects his father's teachings." ”

Emperor Jing was a little uneasy, and reminded again: "Governing the country is upright, and Han Yan's creation of the keel waterwheel is just his temporary interest, this can't be eaten as a meal, you must not learn from him." ”

"The child understands, this is for Teacher Wei Juan to reprimand Han Yan." Liu Che's speech was sonorous and powerful, like Jin Duanshi agreeing with Emperor Jing's words.

"The children can be taught." Emperor Han Jing smiled, very satisfied with his heir, and ordered, "Go and see your grandmother, she misses you very much these days." ”

"Whoa." Liu Che responded, saluted and left the palace.

I sighed when I went out, I wanted to ask for credit for Han Yan, and I also wanted to show off my ability to use people to my father, seeing how talented my sworn brother was, but I didn't expect to usher in a blow, and I didn't get recognition, but I was trained......

Young people like novelties, Liu Che is no exception, he is very bitter in the palace, and it is even more bitter when he is the crown prince, he has to behave every day, and he doesn't dare to do anything out of the ordinary, just like a little monkey in an iron cage, looking at the world with curiosity, if someone throws something in your cage, he is absolutely reluctant to throw it if he is not tired of playing.

Growing up in the palace, Liu Che is very scheming, and his rebellious heart is also very strong, and now that Emperor Jing is still in power, I can't help it, wait for me to become the emperor......