The legend about Chen Liang is widely circulated. There is an interesting story that County Magistrate Xu has also heard of. It is said that Chen Liang rode a horse on the snow to visit Xin Qiji, but it is said that Chen Liang came to the small bridge not far from Xin Qiji's house. Chen Liang was not willing to cross the bridge with his horse under his crotch. As a result, Chen Liang was furious and drew his sword and cut off his horse's head, then walked across the bridge to see Xin Qiji.

County Magistrate Xu also thought that this was an interesting thing. As far as Chen Liang was concerned, he could perform this show casually. This is the real celebrity.

In short, Chen Liang has many tricks, and I don’t know what tricks Chen Liang used to match Mao Geng and the Su family’s daughter this time. Anyway, it’s a happy event, so you might as well join in for a while.

Chen Liang is always unscrupulous in the magistrate of Xu County. He never pays attention to the younger Mao Geng. He always does something stupid. However, Mao Geng has cross-age knowledge and it is difficult for Chen Liang to gain superiority from Mao Geng. But Chen Liang is still an enthusiastic person and cannot make trouble in the main business. You cannot help but admire Chen Liang's ability to find trouble. Chen Liang always has a heart that is unwilling to be lonely, always has a strong spirit of participation, and an irresistible desire to command. He must also find something that he can do to trouble.

Finally, as he wished, Chen Liang finally found something he could point fingers, that is, the love between Mao Geng and Su Zhiyan. Moreover, by chance, Chen Liang immediately discovered a magical prop, and Chen Liang immediately decided to direct a love drama.

Speaking of which, this prop is actually used by Mao Geng to determine the unit of length.

Mao Geng designed all the metric designs in his previous life, but the Song Dynasty used the Song squeak. Mao Geng felt that it was necessary to switch to the metric length units of "rice" and "mm".

In theory, one meter can be obtained through a simple free fall motion test, because the gravity acceleration a thousand years or even five thousand years ago has never changed and the gravity acceleration in later generations, both are 9.8. Although there are slight differences in different longitudes and latitudes, they are almost the same. As long as the formula for free fall is covered:

h=1/2xgxtxt

As long as you measure the time of free fall, you can calculate the height value of free fall, and then you can obtain one meter's length.

Now the time watch is available. In order to make the timing more accurate, Mao Geng has also added an acceleration transmission stage to the time watch, so that the time watch has the function of a stopwatch. The longest and fastest pointer is the stopwatch pointer. In this way, the precise timing of free falling bodies has been fully met.

However, this free fall test must have a sufficient height. Even if it is a height of 120 meters, the free fall time will be less than five seconds. Mao Geng, based on the principle of rigorousness, in order to obtain as accurate data samples as possible, finally set four general test height intervals: 100 meters-200 meters, 200 meters-300 meters, 300 meters-400 meters, and 400 meters-500 meters.

Okay! Here comes the trouble. The tallest building in Song Dynasty is about the pagoda, which is only a few dozen meters tall. Of course, it cannot meet Mao Geng's free fall test. Mao Geng missed the tall buildings that rose from the ground in later generations. The skyscrapers in later generations were taller than the other. The tallest Burj Khalifa in Dubai was more than 800 meters high, and the land king in Shenzhen was nearly 400 meters, but there were no buildings suitable for free fall tests at this time in Song Dynasty! Well, okay! Let's think of other solutions.

In order to conduct this inexplicable experiment in the eyes of his disciples, Mao Geng decided to let the hot air balloon be released in advance. The hot air balloon must be the kind that carries people. In Mao Geng's design, someone must operate it on the balloon. He must not only straighten the rope that measures the height, but also throw the iron ball and record the time of throwing the ball. Therefore, not only does one person have to be placed on the balloon, but also a timepiece, iron ball and a rope that measures the height, and alcohol blowtorch that provides heat to the hot air balloon. It must be said that in the Song Dynasty, this is really a very laborious and expensive project.

The airbag of this hot air balloon is more than five zhang in diameter. Including the loss of more than thirty pieces of silk, a piece of silk is three silos. With the rope, the material cost of the phosphon is more than 100 silos, which is definitely an extremely luxurious move. However, one advantage of mulberry silk is that it can withstand a certain amount of high temperature. Later generations of chemical fibers pretending to be silk are everywhere, but chemical fibers will be charred as soon as they are burned. When mulberry silk is burned with a lighter, the silk will not be damaged as long as the time is short. Therefore, even if silk is a little more expensive, it is the best hot air balloon airbag fabric.

The wine was also very expensive at this time. It was just because the government implemented the wine-debate method, which added heavy taxes, so distilled thirty kilograms of alcohol consumed a lot of money. Fortunately, distilling the wine to more than 95% of the alcohol was not too difficult. After investing money and manpower, the disciples distilled out the alcohol as fuel as scheduled.

Copper alcohol blowtorches are more difficult. The technology of forging copper tank shells and welding was more popular in the Song Dynasty. It was not difficult to have Mao Geng’s guidance. However, alcohol blowtorches are considered pressure vessels at least. Of course, the pressure is not large, but they need to be sealed and there is also a gas pumping device. Without rubber, Mao Geng used felt-soaked asphalt as a seal and also pieced together the alcohol blowtorches. After trying, the effect was actually acceptable. Anyway, it can make the hot air balloon rise. In terms of function, this is enough.

This hot air balloon is too big. In order not to alarm the nearby people, Mao Geng specially chose the early morning to conduct the experiment after everything was ready.

Several rows of simple houses have been built in the dangerous shoal of Hongniwan. They are built with red brick walls and cement bamboo fiber tiles. Mao Geng and Chen Liang now live here.

In winter, the water supply is less than other seasons. There are not many opportunities to use water wheels and winches every day. Mao Geng certainly will not waste the power that water wheels can output. When there is no tug, the water wheel power is used to drive the transmission shaft for production. This transmission shaft drives the woodworking machinery and the newly launched metal lathes. The woodworking machinery here will mass produce sheets and components for future construction of water wheels and winches every day. Mao Geng's design principle is standardized and modular design. Now we are manufacturing standard wood for two specifications of water wheels.

The metal lathe is being assembled and can be completed in about four or five days. Then it will be the first hydraulic metal lathe, which is obviously a thing worth looking forward to. All of this requires guidance from Mao Geng, so Mao Geng simply moved here. In order to build more materials and construction techniques from Mao Geng, Chen Liang refused to leave Mao Geng and lived here with his concubine. As for the more than 150 reconciled people who have been recruited, they were sent to two bases for queue training, so Chen Liang didn't have to worry about it for the time being.

In the early morning of this day, there was no wind, and Mao Geng's free fall test quietly began in Hongniwan.

Mao Geng did not wake up Chen Liang, but brought ten people to the newly leveled Hongniwan Square. After everything was ready, the airbag was inflated. The blower driven by the water wheel power started to move and blew into the airbag. After the airbag was swelling, he lit the alcohol blower and began to heat the air in the airbag. After a while, the airbag swayed away from the ground and straightened the rope connecting the hanging basket bit by bit. At this time, Fugui, who was responsible for the air test link, had already been waiting for the balloon to rise in the hanging basket. As the alcohol blower continued to spray flames, the temperature of the air in the airbag further increased, and the buoyancy also increased at the same time, until the hanging basket was lifted off the ground, and the hot air balloon began to soar.

There are three ropes hanging on the hot air balloon, two of which are pulled by two people, and used to control the hot air balloon at a predetermined height and a predetermined position. The third rope is the rope for measuring height. An iron cone weighing about five kilograms is hung on this rope. The support in the hanging basket requires controlling the handle on the hanging basket winch so that the iron cone just off the ground. Of course, it is best to keep the rope of measuring height perpendicular to the ground. Speaking of which, this free-fall test is really complicated.

Such a complicated thing certainly requires communication at any time. The iron speaker came in handy again. He helped the back and came to his senses. With the help of the power of the iron speaker, he could hear it from below, and his voice really resounded through the sky.

The upper and lower parts shouted at each other through the iron horn, and the height measurement process came to an end. We supported ourselves and marked the mark on the height measurement rope, and then we entered the final free fall time.

In fact, this was just a matter of a moment. Almost while marking the mark, Fu Gui shouted "Lower, let the ball." Fu Gui breathed a sigh of relief, suddenly released the iron ball, and read the time on the time table at the same time. The sound of the time echoed in the air through the iron horn:

"Six forty-nine: fifteen seconds three or four."

The ten pairs of eyes below were staring at the red iron ball falling from the sky. The iron ball fell rapidly. As soon as the iron ball landed, there was a time to report the time:

"Six forty-nine: twenty-one."

Mao Geng breathed a sigh of relief and got the first set of data.

Then the balloon was raised and everything I had just passed was repeated, and the other three sets of data were successfully obtained.

But such a movement woke Chen Liang up when he reached the first level. Chen Liang was a very lively person. When he hurriedly got up, the experiment was almost over. However, Chen Liang caught up with the scene where the balloon rose to the highest point and then slowly fell down. This guy was immediately attracted by this scene. Good! This can be called the pinnacle of performance art. His performance art that he used to cut his horse's head back then was shocking, but compared with Mao Geng's work, it was simply a witch.

After the hot air balloon landed successfully, Mao Geng was busy calculating the data and determining the length. Mao Geng calculated the height value based on the time taken for free fall and obtained four height values ​​in meters. The four height marks marked on the height measurement rope were also recorded with four ropes compared with the actual length. In this way, four long ropes with known lengths in meters were obtained. The following work was nothing more than measuring the length of one meter based on these four ropes. This was just a simple arithmetic problem.

In this way, Mao Geng got a length of one meter in the Song Dynasty and was very excited. He was thinking about how to implement the metric system in the Song Dynasty in the future, including kilograms - that's the weight of a cubic decimeter of water!

But the hot air balloon in Chen Liang's eyes was a very good prop. Chen Liang thought about it and decided to use this wonderful prop in the place where it should be the most outstanding. Chen Liang had to talk about Mao Geng first for this.

Chen Liang was a little worried. Mao Geng seemed to be born with a lack of romantic atmosphere, afraid that Mao Geng would reject his kindness. However, when Chen Liang told Mao Geng about his thoughts, Mao Geng did not refuse as he imagined. He just thought for a while and then happily agreed to Chen Liang's seemingly nonsensical plan.

*******

In fact, Su Zhiyan also watched the Hongniwan trial sailing demonstration last time, but she was sitting far away on a boat downstream and watching a rough look behind the curtain.

The father and brother were determined to marry Mao Geng themselves. Before Mao Geng married Ling'er, Su Zhiyan had already secretly agreed. However, after Mao Geng married Ling'er, his father and brother still did not change his original intention. Su Zhiyan felt that he wanted to win over Mao Geng himself, which seemed to be no different from Qujiadong.

Later, the enthusiastic mother-in-law came to persuade her, but her words were pretty good. Since ancient times, beauties loved heroes, and Su Zhiyan was no exception. The mother-in-law praised Mao Geng as a responsible man. Not only was he talented, but he was also a pure and kind-hearted man. Su Zhiyan took Fengsanlang as a reference and also felt that Fengsanlang was just a playboy compared to Mao Geng. In addition to being deeply in love with him, Fengsanlang was really unkind in other aspects.

But it is precisely because Fengsanlang is extremely dedicated to Su Zhiyan that Su Zhiyan feels that Mao Geng doesn't even come to see him after marrying Ling'er. Even if he is forced to marry Ling'er, at least you have to explain and confess his love! On this point, Su Zhiyan is a little childish and always has a quarrel in her heart.

That day, Su Zhiyan secretly watched the scene that was rising by the Zishui River, and her mind was filled with Mao Geng's shadow. Su Zhiyan knew very well that all of this was directed by Mao Geng behind her. This wonderful performance made Su Zhiyan blush and eager, and she was looking forward to Mao Geng suddenly appearing in front of her at some point.

However, what's abominable is that Mao Geng didn't come to the door for a long time, and he didn't show any signs for so long. Su Zhiyan was extremely disappointed and remembered the various benefits of Fengsanlang. In the past two days, her nose was not a nose, face, and her face looked angry, which made the Su family a little worried about her.

Yesterday, Su Zhiyi came to inform that the Su family would hold a wedding in Hongniwan today. There was a platform there. I heard that a large area of ​​land was flattened, which was a good place to hold the wedding. Su Zhiyan wanted to know who was the Su family to hold the wedding, but Su Zhiyi was vague and claimed that she would know it when the time came.

The Su family today booked a newly built luxury passenger ship by the Dun family. It is said that this was also designed by Mao Geng. It is comparable to the 150,000-pound wool boat. However, this ship is built very exquisitely. The carved railings and painted buildings on the ship have a very good view. The Zijiang River water is particularly clear in winter, with blue sky and clear water. In fact, I feel that the scenery on the ship is beautiful, but Su Zhiyan feels that the two sides of the strait are in a bleak state, and her mood is very depressed. Thinking about it today, it is a happy event for others, but she cannot be happy at all. She is speechless all the way, just dazed.

When the boat arrived at Hongniwan, he realized that there were only one or two thousand people surrounding the entire Hongniwan today. What surprised Su Zhiyan was that the big ship dropped its anchor at this time and stopped on the river.

Suddenly, a drum music sounded, and Su Zhiyan was attracted by the sudden drum music. Her eyes couldn't help but look at the place where the drum music sounded, but saw a large colored ball bulging up little by little on the other side of the crowd, and then became bigger and rounder, and suddenly rose to the sky.

Su Zhiyan then saw a hanging basket hanging under the large colored ball. The person on the hanging basket couldn't see clearly, but Su Zhiyan felt that it was Mao Geng.

The balloons were rising all the way, and at this time, the same sound came from the platform as the trial sailing commentary that day. It was Zhang Haisan:

"Dear relatives and friends, and guests, today is a good day! A good day!"

Someone actually started singing:

"Hey, today is a good day, everything you think can be done, today is a good day, and you will be on the balloon to welcome the joy."

As soon as the singing stopped, Zhang Haisan's voice sounded again:

"Dear guests, relatives and friends, everyone knows Mr. Chen Liang. Now, Mr. Chen Liang is by my side. On this festive day, please say a few words to us."

Then, Chen Liang raised his iron trumpet and shouted with all his strength:

"I, Chen Liang, have a friend who likes a woman. Before that, he did not confess to this woman, but it was not too late. Today, he would say what he liked in his heart loudly in front of everyone, and everyone said, okay!"

Chen Liang's sensational words made everyone present feel extremely enthusiastic. For a moment, gossip and wishes flowed freely on both sides of the Zishui River. Even Su Zhiyan, who was far away on the boat, felt the warm atmosphere.

Chen Liang looked up at the rising balloon, and the iron trumpet also shouted loudly towards the sky:

"Mao Geng, she is just watching you. Do you still have to wait? Hurry up! Tell her your likes."

At this time, the balloon was getting higher and higher. Mao Geng said that he had never thought of confessing like this, it was not his personality. If it weren't for Chen Liang, he wouldn't have the courage to confess to Su Zhiyan loudly on such an occasion. It was Chen Liang that awakened his passion. At this moment, the passion burned, and Mao Geng no longer had the shackles in his heart. The sound of love was transmitted through the iron speaker, so far:

"Su Zhiyan, I like you! I want you to marry me! Marry me Mao Geng!"

Mao Geng shouted this sentence and suddenly felt that he had not come to Song for nothing. I don’t know what Su Zhiyan would think, but I, Mao Geng, would not regret it. I like this moment, this passionate moment. Although Mao Geng was in his heart, he was also uneasy, fearing that Su Zhiyan would not accept such confession.

With Mao Geng's confession, the sound of gongs and drums suddenly rang out, and hundreds of big red Kongming lanterns were released on both sides of the Taiwan Strait at the same time. Under each Kongming lantern, a big red double-happy word hung.

At this moment, Mao Geng's hanging basket also opened a huge red scroll bit by bit:

"Su Zhiyan, I like you, marry me!"

The unfolding of this huge scroll made the onlookers on both sides of the Taiwan Strait boil. They had never seen the wonder of a hot air balloon carrying people to the sky, and were even more stunned by this bizarre love show.

When Su Zhiyan heard and witnessed all this, she felt so happy that she was dizzy. Su Zhiyan said in her heart that I was very happy that you would be like this for me, but do you also want me to hold the iron horn and answer you loudly - "Okay"! Although she is willing to say ten thousand "Okay" in her heart, she is her daughter's home, so she can't shout loudly like you!
Chapter completed!