I

Nanjing, near Shibuya.

Xu Zhengming, unable to get close to the emperor's office, put the flying chair on the street, stepping on the pedals with both feet to attract passers-by.

According to the records of "Wu County Chronicles", this flying chair is shaped like a Castanopsis chair. "There are organs underneath, and the teeth are interlocked", that is, driven by gears. "A person sits in a chair and hits the board with his two feet, and the machine moves up and down, and the wind whirls." That is, use the pedals to drive the gears, and then let the propellers rotate to take off.

Under the onlookers of the people in Nanjing, they saw the propellers turning rapidly, and the large fans blowing dust on the flat ground.

Even the person and the chair flew up.

"What a wonder!"

"Fly higher, to the roof!"

"This place is too close to the royal family. If I fly higher, I'm afraid I'll fall into His Majesty's courtyard."

"Oh, fell!"

Xu Zhengming got up with a disheveled face, his right hand was scratched, and his pants were torn at the knee. He patted the dust on his palms and said in crappy official language: "My neighbors in Nanjing, I, Xu Zhengming, are here to present a flying chair to His Majesty. But I can't see His Majesty, so I will present treasures to the neighbors first. If you like it, call A few rewards. To be honest, I have exhausted all my money, and I still haven't found a place to stay tonight."

"Fly again!" someone booed.

Xu Zhengming smiled and said, "Okay, let's fly again for the neighbors."

His flying chair has been improved and can fly more than two feet high, which is nearly one meter. Moreover, there are also small propellers at the tail, which can be pushed forward and even steered.

"The up and down machine turns the wind and whirls quickly", the upper one is a large propeller, and the lower one is a small propeller.

There were more and more people watching, and even the patrolmen came, standing by the side of the road to watch.

It's a pity that this thing is too laborious, and you have to pedal like crazy. Step on your feet more slowly, and the flying chair will immediately fall down, falling down every time, and it has never landed smoothly.

Seeing the flying chair fall to the ground, the patrolman immediately stepped forward and scolded: "You can't juggle in the streets here, let alone gather people to make noise. Leave quickly, or you will be fined!"

Xu Zhengming hurriedly got up, cupped his hands to flatter him and said: "This official, the grassroots want to see His Majesty, so they come from Suzhou to offer this."

"If you want to see His Majesty, please post a letter in the big mailbox over there, stating what is the matter," said the patrolman, "If Your Majesty wants to see you, you can send someone to summon you yourself."

Xu Zhengming said: "It's been several days since I submitted the letter, and there is no news at all."

The patrolman smiled and said, "That means His Majesty doesn't want to see you."

When the mailbox was first set up in Nanjing, the common people felt that it was new, and even trivial things were written into it.

Gradually, they found that the emperor didn't care about trivial matters, and he didn't bother to write letters after a long time.

Today's letters to the emperor are mostly voted by folk scholars, and there are no more than two types of content: one is to offer advice and suggestions, put forward their own political opinions, and want to win the favor of the emperor; To impress the emperor.

There is a guy who writes one a day, whose name is familiar to Zhao Han.

So Zhao Han directly asked someone to post a notice next to the mailbox: "Gossip and articles are not allowed to post letters. If there is a repeat offense, none of the descendants will be an official!"

Under the urging of the policeman, Xu Zhengming and his son wanted to leave with the flying chair.

But I saw a strong female officer coming on horseback, shouting along the way: "Who is Xu Zhengming? Who is Xu Zhengming?"

"I am, I am!" Xu Zhengming waved quickly.

The female officer reprimanded: "Why can't the inn find you? It's so hard for me to find you, my voice is hoarse."

Xu Zhengming smiled apologetically, "It's been half a month since I've been down in Nanjing, and I've exhausted all my money, and the inn clerk drove people away with sticks."

The female officer said: "Come with me, and take your things with you."

The father and son carried the flying chair and left inexplicably excited.

He heard people say that the emperor likes strange things, so he ventured to Nanjing.

Zhao Han was in Liu Rushi's courtyard. Liu Rushi was walking and singing under the shade of a tree with her big belly. Li Xiangjun, who is a female official, sat next to her and played a pipa to accompany her.

"The wild goose marches south, the westerly wind is blowing in a hurry, and Hu Tian is loud and empty, and the sound is difficult to read, and the situation is very smelly, and who is going to visit the beauty? There is Wusun who is sent to the west and is alone all his life, and there is a barren grave. The smoke locks the grass and green ..."

This is a Sanqu from Liang Chenyu's "Jiangdong Baizhu".

Sanqu is different from opera.

Xiqu can be understood as Chinese opera, while Sanqu is a popular song in the Ming Dynasty, which is very pleasant to listen to once you get used to it.

After the song was over, a female official came to report: "Your Majesty, Xu Zhengming brought it here."

"Let him in," Zhao Han said.

The moment he saw the flying chair, Zhao Han couldn't help laughing. It was a helicopter with only seats and propellers left.

"Grassman..."

Zhao Han stopped: "Don't kneel, I'll take a look when you lift it up."

The flying chair moved in front of Zhao Han, he squatted down regardless of his image, and turned the pedals with his hands, and the two propellers turned.

Moreover, it is still an all-wooden structure, and even the gears are made of some kind of hardwood, and a lot of sesame oil is applied between the gears for lubrication.

The whole "helicopter" does not have a single nail.

Black technology!

Zhao Han stood up: "You try to fly."

Xu Zhengming sat in the flying chair and stepped on the pedal again. In front of the emperor, he was so powerful that he flew more than one meter high, flew forward for more than five meters, and then...exhausted and crashed.

This time I flew too high and broke the blades of the propeller.

"Hahaha!"

Both Liu Rushi and Li Xiangjun were amused, and at the same time were amazed by this thing.

Xu Zhengming's son hurried to help him up, and the father and son knelt on the ground. Xu Zhengming explained: "Your Majesty, the Caomin can still improve, and they will be able to fly over mountains and rivers in the future!"

Zhao Han said, "Get up, sit down and talk."

"Thank you, Your Majesty!"

The father and son stood up quickly, and thanked the female officer who moved the chair.

Zhao Han asked, "Are you a carpenter?"

Xu Zhengming said, "Exactly."

Zhao Han asked again: "How is the livelihood?"

Xu Zhengming said: "Thanks to Your Majesty, after losing my carpenter status, I don't have to serve the government anymore. I do some carpentry work on weekdays, but I don't have to worry about food and clothing. The money I earn is used to make wonderful things , Sometimes the family will run out of food and starve.”

"How long have you been doing this?" Zhao Han asked.

Xu Zhengming said: "For more than ten years, I couldn't fly at first, and then I fell down as soon as I left the ground. Your Majesty, as long as the grassroots do it for another ten years, they will be able to fly higher than the city wall. At that time, they will be able to fly for Your Majesty." Build hundreds of flying chairs, and fly directly over the city tower when attacking the city."

Zhao Han thought of the scene of Datong soldiers attacking the city in a helicopter... The picture is too beautiful to look at.

Zhao Han asked, "Do you have a sign?"

Xu Zhengming said with a smile: "Caomin is just a carpenter. Although he has read books for a few days, how can he get the calligraphy?"

Zhao Han said: "If the wood is made of rope, it will be straight, and if the wood is turned into fire, it will be bright. You are a carpenter, so why don't you take the word wood virtue."

"Thank you, Your Majesty, for the words!" Xu Zhengming was overjoyed, jumped up from his chair and knelt down to thank him.

"Get up," Zhao Han said, "let's put this flying chair on hold for now, there's no need to go up to the sky as soon as you arrive, but start from running on the ground. Your pedals are very good, why don't you make a car that can run on pedals. "

"Car?" Xu Zhengming looked puzzled.

Zhao Han asked the female officer to fetch a pen and paper, drew a bicycle, and said: "People sit on it and step on the pedals to move forward."

Xu Zhengming asked: "Won't it fall? How about making four wheels?"

Zhao Han smiled and said, "If you ride fast, you won't fall over. You can make three or four wheels."

Regardless of the number of wheels, a bicycle without a chain is very difficult to pedal. It was all front-wheel drive, with big front wheels and small rear wheels, and the lack of air-filled tires made it bumpy and uncomfortable.

Zhao Han asked Xu Zhengming to build a bicycle purely because he wanted to exercise.

Zhao Han said: "Take my handbook and go to Qintianyuan to find Fang Yizhi, and learn mathematics and physics from him."

Xu Zhengming said: "Your Majesty, the Mathematics Society."

"You know math?" Zhao Han asked with a smile.

Xu Zhengming said: "Caomin's youngest son is also studying. Caomin took his math textbook and learned it by himself. It is not difficult, as long as you memorize the numbers of the feudal kingdom. Many things are the same as arithmetic."

Zhao Han was even more satisfied, and said: "Then I will give you an errand. While studying physics with Fang Yizhi, I will improve the existing spinning machines and looms. It is best to make a large machine that can spin a lot of yarn at a time." , Weave a lot of cloth! When you finish the machine, I will apply for a patent for you. The Qintian Academy will share 70% of the money earned from the patent, and you will share 30%.”

This is not an unfair contract, because the research and development costs for improving the loom are all provided by official funding.

"Follow the order!" Xu Zhengming imitated the accent on the stage.

This guy still wanted to continue researching helicopters, but the money he earned couldn't make ends meet. So he came to see the emperor, and wanted to get some silver rewards to live on.

It's even better now, I have an errand in Qintianyuan, and I can make money while tinkering with airplanes.

Moreover, under the pretext of improving the loom, the "scrap" of good wood can be used for free.

With the introduction of hydraulic spinning machines in Jiangxi, the spinning speed cannot keep up with the spinning speed. Therefore, over the past few years, the spinning machine has also been improved, but the spinning efficiency has only increased by about 20%.

Zhao Han also didn't understand textile machinery. Now that he caught someone who could make a helicopter, of course he had to throw it away and do some serious business.

In an era when the power system cannot keep up, the development of helicopters is indeed "playing with things and losing one's ambition"!

If Xu Zhengming continues to do so, one day he can really fly a few feet high, then sooner or later he will be thrown to death.

After this person left, another female official came to report: "Your Majesty, Hong Chengchou and others have been brought to Nanjing."

"Send it to mine." Zhao Han was too lazy to see these traitors.

A lot of things happened in Shandong, Hong Chengchou and Zuo Liangyu were almost forgotten. It wasn't until Fei Ruhe was ordered to move his army that he suddenly remembered that there were still a bunch of high-level prisoners, and they were hurriedly sent to the Jiangsu border for isolation, and then sent all the way to Nanjing by boat.

Wouldn't it be cheaper to kill Hong Chengchou?

Zhao Han didn't like to mess with Ling Chi, and felt uncomfortable if he cut him off with a knife. Then send them to mines and become a working people. How many years they can live depends entirely on the good fortune of the traitors.

(Don't complain that the volume of water freezes and becomes larger and smaller. Lao Wang's physics is taught by the physical education teacher.)