Since it was sent by Bai Qichang, Wang Lucao and the other three naturally had to meet in person. Ran Ming was smart and clever. He talked about his good words and welcomed Yunyun, so that the three of them could rest. Finally, he no longer wanted to have the gap in the past. He gave Ran Ming a big red envelope and asked him to rest in the backyard first.

Ran Ming was naturally happy when he received the big red envelope, and he didn't need any work. He was happy and relaxed during this trip to Suzhou Prefecture.

In February, the price of rice in Suzhou Prefecture had risen to one dou of three coins of silver. The people were in a miserable state, and even more excited. At this time, Sun Hong, who was swaying on that day, did not dare to go out any longer. When he had no choice, he was in a green curtain sedan, which was very low-key.

The gyroscope drawings entrusted to Mr. Fu were also the day to witness the real thing.

This day was Chen Kang's first time in a month. Wei Wubai drove the carriage, accompanied by Liu Shu and Huang Sanyuan, and his group went into the city with light clothes.

After going around, I arrived at the alley and found Mr. Fu's house.

After waiting in the main hall for a while, Mr. Fu was helped out by his third son, holding a tray in his hand, which was covered with red cloth. The old man was blushing and greeted him with a smile.

Mr. Fu said, "It's just that I've been waiting for the young master. I've made three pieces and waited for the young master to check. Which one is in line with my wishes."

Chen Kang had been impatient, so he hurriedly went forward and bowed, "Thank you for your hard work, old man."

Mr. Fu put the tray on the table and pushed his hands and said, "Please look, young master."

Chen Kang smiled again, raised his hand and pulled the red cloth away.

The moment the red cloth was torn apart, the maritime career of the Ming Dynasty was destined to be taken to a higher level.

This is a more stable existence than the artifact that pointed out the direction in previous dynasties. It is accurate, not easy to damage, and has a long service life. From then on, the ships of the Ming Dynasty and the navy of the Ming Dynasty can gallop on the sea and no longer be afraid of losing their direction.

The three gyroscopes were carefully polished by the father and son. The basic structure is the same, the difference is the appearance color or polishing level.

Mr. Fu pointed to the axis on the gyroscope and said: "The outer ring shaft is vertical, the rotor shaft is placed horizontally in the meridian plane, and the positive end always points north. The center of gravity is down along the plumb axis, or it deviates upward from the support center. When the rotor shaft deviates from the meridian plane, it also deviates from the horizontal plane, creating gravity moment to make the gyroscope enter the meridian plane."

Chen Kang smiled and said, "This kind of gyro compass that utilizes gravity torque is called a swing compass."

Mr. Fu smiled and said, "Actually, this thing is simple, but it was used in sachets in the past, but now it has been transformed into such a look by the young master, but its purpose is very different."

Chen Kang's eyes were filled with light and said: "When the gyro rotor rotates at a high speed, without any external torque acting on the gyro, the direction of the gyro's rotation axis in the inertial space remains stable, that is, it points to a fixed direction; at the same time, it resists any force that changes the axial direction of the rotor, which is the fixed axis of the gyro."

He said this and then said: "It has been buried for too long. From then on, the sea will be its place of light and heat. Mr. Fu, you will be famous in history."

Mr. Fu was infected by Chen Kang's heat, but waved his hand and said, "I'm just trying to do it. The young master can see such a shocking secret from that small sachet. He is the one who has been remembered in history."

Chen Kang bowed his hand again and said, "Old man, thank you for your hard work." After that, he waved his hand and said, "Ashu, reward."

Liu Shu hurried forward and took out two ingots of silver from his cuff.

When Mr. Fu saw twenty taels of silver, he quickly pushed his hands and said in shock: "I dare not, but I dare not, this is too much!"

Chen Kang smiled and said, "Old man, you don't want to mention this matter in Japanese history books, saying that Chen is a stingy villain, right?"

Mr. Fu was immediately nervous, but he still returned a ingot of silver and said, "Young Master, I don't dare. You are generous, but we ordinary people can't afford it."

Chen Kang waved his hand and insisted: "No, if not, you will accept everything. If not, you will give no one."

Mr. Fu was so scared that he stopped and wanted nothing. Isn’t that in vain?

Chen Kang smiled and picked up the tray and said, "Give up your tray, old man, thank you."

After saying that, he walked out the door as if holding a rare treasure.

Huang Sanyuan followed behind and said with a smile: "Young master is so generous!"

Liu Shu smiled and said, "Young Master saves money on weekdays and will only be generous when necessary."

Huang Sanyuan nodded, Yes, his son is not outstanding in dressing, and his food, clothing, housing and transportation are ordinary, not the person who is used to luxury. His biggest hobby on weekdays is to write in the room or play the piano in the yard. When he thought that he was rewarded with twenty taels of silver, he felt in his heart that Chen Kang loved him seriously.

It turns out that it is not because of being generous, but because of distinguishing between people and things.

For the first time in his life, Huang Sanyuan felt that he was valued so much. He truly felt that he was not only a teahouse and a verbal silly person.

He Huang Sanyuan is a useful person.

Liu Shu sighed lightly and said, "Although I have been following the young master for a long time, I have only learned a lot and my words are unfathomable. Just like what I said to Mr. Fu just now, how much do you understand?"

Huang Sanyuan then jumped out of his excitement, smiled awkwardly, and said, "I'm going to hide it from you. Every word is clearly spoken clearly, and you can understand any word when you disassemble it, but when you connect it, you can't understand a single sentence."

Liu Shu sighed deeply and said, "It's hard for you. Even I can't understand. How can you understand? Remember it later. Listen more, read more, learn more, and talk more. It's small to be a real useful person. I understand?"

Huang Sanyuan had already appeared. Although Liu Shu was young, he always liked to teach people a lesson. For Huang Sanyuan, this was not a big deal. For a literate book boy like Liu Shu, he had an innate sense of awe, just like ordinary people.

Huang Sanyuan felt it made sense, so he nodded and said, "Yes, I understand."

As for Liu Shu, the big clove of garlic filled in front of Huang Sanyuan was very successful. He nodded and smiled with satisfaction.

On the way back, Chen Kang quietly looked at the three gyroscope compass on the table. Through this gyroscope compass, he seemed to see the invincible Ming navy on the blue sea, saw the coming and going of merchant ships, and the exchange of existence and none, and saw the different future of the Ming Dynasty.
Chapter completed!