"Young Master Fang can really do it yourself?" Pang Yu looked at Fang Yizhi in surprise.

Fang Yizhi hesitated for a moment before saying, "I'm afraid it won't work. Although it's quite difficult to polish the lens inside the telescope, it won't work. Some craftsmen in Nanjing are good at using craftsmen, but most of the telescopes are not strong enough and need to be carefully searched."

“Suan?”

Fang Yizhi smiled and said, "There are few people in Anqing area. This thing is polished with crystal or glass and wood as a frame to cover your eyes. It can help people with damaged eyes to see things."

"That's glasses." Pang Yu suddenly said, "It turns out that it's there at this time."

"If Pang Banteou is free, he will look at the larger shops in the city and he will know that there are many shopkeepers and accounting offices in use."

Pang Yu nodded and said, he felt that Fang Yizhicai was more like a time traveler, but he was so stupid that he knew nothing.

Looking at the wooden tube, Pang Yu suddenly said, "If Mr. Fang can find the craftsman who makes telescope lenses, please leave the craftsman's address. I also want to find them to customize some telescopes. This object can not only be used in astronomy, but also in battlefields, especially for sentry probes."

Fang Yizhi was moved to the point of saying, "Pang Bantu really has a talented talent. This thing is a military weapon that Lord Xu Guangqi said. In previous years, they were purchased from Macau, but they were rarely used for saivers. They were used for sightings and sightings of red barbarian cannons. People who are not reliable are not allowed to learn to use it."

Pang Yu smiled and said, "That's a reliable person. You must not only know how to use such a powerful tool, but also know how to make it."

Fang Yizhi walked back to the desk, "Then I'm paying attention to it, there are still some doubts here. Pang Ban looked at whether he knew about this place. According to Matteo Ricci's calculation, the circumference of the earth is 90,000 miles, and the total diameter of the sun is 165 times and 38ths of the earth. In this way, the diameter of the sun is 4735,752 miles and 59ths of the nine miles, and the diameter is 16 million miles away from the sun, and the diameter is 130,000 miles away from the sun, and the diameter is 130,000 miles below. According to Western calculations, every half degree is the total diameter of the sun, but the total diameter of the sun is only more than 130,000 miles, so how can it be more than 160 times the earth?"

After Fang Yizhi finished speaking, he looked at Pang Yu in anticipation. Pang Yu just remembered the diameter of the sun, and he really didn't know how far the earth was from the sun. After he came to the Ming Dynasty, he couldn't figure out whether Yili in the Ming Dynasty was the same as in later generations. He didn't know how to convert it, but after walking a few long distances, he felt that the difference would not be very big.

After frowning, he said, "Young Master Fang is right. The circumference of the earth should be 80,000 miles, which is not far from 90,000 miles, but the diameter of the sun is not 4.73 million miles, and it should be only 2.8 million miles, which is about a hundred times the earth, and it is indeed less than 160 times. As for the distance between the earth and the sun, I don't remember it."

Fang Yizhi was stunned. He didn't expect Pang Yu to give such a clear answer, "Is this the professor from the laity that Pang Bantou met?"

Pang Yu could only nod, and Fang Yizhi asked again quickly, "How can Professor Zeng calculate it?"

"That's not." Pang Yu felt a little guilty. Although he was not afraid of calculations, he knew nothing about astronomical observation methods and calculation methods. If he really asked, he wouldn't know how to answer.

Fang Yizhi said to himself, "Then the nine-day circumference may have to be calculated again."

Pang Yu was afraid that he would continue to ask, so he took the initiative to ask, "Will Mr. Fang spend so much energy on astronomy and Western learning affect the preparations for the imperial examination?"

"There will be some delays." Fang Yizhi indeed put down the booklet, but his expression was still very confident. "But there is no reason in the world, including the three types of principle, physics, and ultimate principle. I want to study and study, not only the principle."

"I dare to ask what the difference is between these three principles."

"It is said that the governance of teaching is the ruling principle." Fang Yizhi sat up and said seriously, "It is said that the phenomena, numbers, laws, calendars, sounds, economy, medicine, power, military tactics, skills, etc., all things in the world are all material, this is physics. The reason why things are the ruling principle is the ultimate principle. I wonder if Pang Bantou can understand it."

Pang Yu was confused by whom he was confused, but he could understand the meaning. "I agree with Mr. Fang's classification, but the names are different. I generally call Zai Li sociology, physics is the same as Mr. Gongzi, and the ultimate truth is philosophy."

Fang Yizhi listened humbly, and Pang Yu took some effort to tell Fang Yizhi about the classification he understood.

Fang Yizhi stood up and laughed, "I have a conversation with Pang Ban today, just a few words, and it is a great pleasure in life."

He walked around excitedly in the house, "I followed my father to learn Yi, and in order to learn, they divided into two types, physics is the study of quality measurement, and the ultimate principle is the study of quality measurement. When I was studying Western learning, I found that Western learning was detailed in quality measurement, but was clumsy in words and how many were proficient, and the imperial examination was clumsy in quality measurement, so both of them were required to learn. Most Chinese Confucians do not understand quality measurement, but only adhere to the principle of principle. Confucians in the world have two diseases, they are obsessed with principles but are not knowledgeable, and they are not good at learning. What's more, they are obsessed with suffering and hard to respect etiquette and law. Those who like to be weird and transcend etiquette are all fond of reputation, and those who are bound to be famous are those who are bound to do their best. You should know that quality measurement is to hide the number of points, and the degree of points protects the quality and measure. We should learn to do the principle without being ruling, and learn physics without being only physics."

Pang Yu looked at Fang Yizhi, who was full of energy in the room and murmured to himself, "Ancient philosophers."

...

When he came out of the Fang family, Fang Yizhi not only sent him out of the house, but also sent him to the Longpanli gate. He repeatedly told Pang Yu to go to Nanjing to reunite when he returned home, and Pang Yu also agreed.

He had a few interactions with Fang Yizhi, but in the past they were all general friends, and they had some words to each other, and they knew that they were not. Pang Yu only used miscellaneous studies as a tool for making friends, and psychologically believed that he was teaching Fang Yizhi's knowledge. But today, after a deep conversation with Fang Yizhi, he sincerely admired this person. Fang Yizhi was not a crazy person like the surface, but a young talent with a high level of thought.

When he recalled the group of scholars from Zeshe in Tongcheng, he had never talked deeply, but each of them had their own strengths. He was not just a person who spoke nonsense, nor did he only understand the imperial examinations, and almost all had active thinking. If they were all at the same level as Fang Yizhi, then he did underestimate the ancients.

After Fang Yizhi returned to the room, Pang Yu took three followers to find the servants of the Ruan family.

Pang Yu was thinking about Fang Yizhi's words along the way, and couldn't help but touch his chin, "Will such a Ming Dynasty be conquered by the braided soldiers?"

"Second brother, when will Fang Yizhi take you to visit Mr. He?"

Pang Yu turned his head to look at He Xianya who was following him, shook his head and said, "I didn't tell him about this."

He Xianya was stunned, and Pang Yu said as he walked, "I think about it carefully. The road Mr. Ruan is pointing to is too complicated. I have to find Fang Yizhi first, and then Fang Yizhi will take him to find He Rutong. He Rutong recommends it to Qian Qianyi, and Qian Qianyi will recommend it to Zhang Guowei."

He Xianya frowned and said, "Does there be too many people?"

"This personnel chain is too long. Mr. Ruan doesn't know the entanglement between me and the Fang family. If the Fang family knows that I want to join the military position, it is still hard to say whether they will support me. There may be some hidden damage, and this risk needs to be avoided. Even if the Fang family supports me, and if you owe a lot of favors in a circle, it is hard to say how effective it will be in the end."

"Then I won't go to find He Prime Minister?"

"I won't look for it anymore. The main owner is Zhang Guowei, so let's look for this person."

He Xianya hesitated for a moment, chased after him and asked in a low voice, "Would Mr. Ruan explain it?"

"Just say it's easy to do it." Pang Yu raised his head, "Mr. Ruan's method has another disadvantage."

He Xianya said humbly, "Second brother."

"He values ​​favors too much and does not accurately understand the key interests. Zhang Guowei's fundamental interests lie not in these favors, but in Anqing's stability and does not affect his official position. As long as I make him believe that I can protect Anqing, he will give me what I want. Compared to favors, I believe in interests more."

He Xianya thought, "Remember."

At this time, the servant came across from the street. When he saw the four people, he said, "Does Pang Banto go elsewhere?"

Pang Yu nodded and said, "If you don't go, do you want to go back to your house?"

"When I went out, the master told me that when the team leader finished the work, I would invite the team leader to Chuyuan in Mochou Lake. There will be a party there tonight, so I will invite Pang Banting to attend."

Pang Yu agreed, and he felt that after the victory in Tongcheng, his status seemed to have improved a lot compared to before. It could be felt by Fang Kongzhang, Fang Yizhi and Ruan Dacheng's attitudes.

Mochou Lake is not far outside Qingliangmen. Several people left the city from Qingliangmen, walked south along the Qinhuai River outside the city, and crossed the Shicheng Bridge to the edge of Mochou Lake.

The green willows by the lake are fragrant and fragrant grass. The spring breeze blows on my face in March. Pang Yu feels refreshed and happy all the way.

Many luxury houses were built along the lake. Pang Yu asked just now that the Chu Garden was built by Ruan Dacheng for his father Ruan Yixun. In fact, it was also his money. There are two gardens in first-tier cities. Pang Yu added another sum to Ruan Dacheng's asset list, and felt that the gap between him and Ruan Monopoly had further widened.

I soon arrived at Chuyuan, which was right by the lake. Although it was also an excellent Jiangnan garden, Pang Yu had visited many of Ruan Dacheng's mansions in a row and was now a little immune.

After entering the yard, there is still a garden, and there is a two-story building next to the lake. Pang Yu followed his servant upstairs and saw the panoramic view of Mochou Lake by the window. He couldn't help but sigh that Ruan Dacheng really knows how to enjoy life.

Someone was talking inside. After Pang Yu walked around the screen, he happened to see Ruan Dacheng's bearded man, and there were three people sitting by the round table.

Ruan Dacheng laughed at Pang Yu, "Just talking about Pang Xiaoyou, the master arrived."

The other three people saw it. Several of them were in their forties and fifties, and their temperaments were very calm. None of them stood up, but just smiled and greeted. When Pang Yu saw it, he felt that he was an official, at least he had been, and his official position should be quite large.

"These are all my friends, and now they are all in Nanjing. Come and see Pang Xiaoyou." Ruan Dacheng came over and reached out to the first person in the left hand, "This is my friend Yang Weiyuan of the same year, and once served as the Minister of Taichang Temple."

As expected, he had been a high-ranking official, and Pang Yu quickly saluted respectfully, "The villain Pang Yu has seen Mr. Yang."

Yang Weiyuan just nodded slightly and said with a smile, "Heroes are young, Tongcheng is a brilliant person."

Pang Yu didn't dare to say anything, and Ruan Dacheng turned to the second person again. The man was in his early forties, wearing a black green collar and thin cheeks. His eyes looked at Pang Yu very vivid and his temperament seemed quite capable.

When introducing this person, Ruan Dacheng's tone became softer, "This is also my friend..."

The man stood up and said, "I'm called Ma Shiying, don't call him sir. How old is Xu? Just call me Brother Ma."
Chapter completed!