Zhong Huamin is messy in the wind.

His Royal Highness, who is full of career, is actually thinking about women.

However, the sensible Zhong Huamin didn't say anything.

Zhong Huamin stood aside in embarrassment and said, "You can just find the painter in the palace to study this painting. It's not difficult."

Sun Xian asked in disbelief: "Is that true?"

Zhong Huamin said: "Yes, Eunuch Sun. This painting method is simple and plain, focusing on the realistic between the outline of the characters and the light and shadow. The painters should understand it after careful research for a few times."

When Sun Xian heard Zhong Huamin's answer, he was finally relieved. Then Sun Xian said to Zhu Changluo carefully: "Master, please give the painting to the slave. Let the painter study it carefully. Try to let them draw all the paintings for you as soon as possible."

Zhu Changluo said: "Okay, I'll give it to you. Anyway, this painting is also a painting for you. You can't even install it in this palace. You can take it back to the East Factory to enjoy it yourself."

Sun Xian was delighted. He really liked this portrait. He bowed to Zhu Changluo and said, "Thank you, Master."

After thanking Zhu Changluo, Sun Xian looked at Zhong Huamin again and said, "Master Zhong, can you leave some money for me?"

When Zhong Huamin heard about Sun Xian’s question, he was embarrassed.

"this..."

Zhu Changluo looked at the cheeky Sun Xian, and then at the hesitant Zhong Huamin. He understood what Zhong Huamin meant. How could a civil servant write a portrait of a eunuch? If this is spread, the official would not think about doing it again.

Zhu Changluo said directly to Sun Xian: "Okay, don't behave like it if you get the cheaper. Go back and do your business quickly."

After Sun Xian heard Zhu Changluo's impatient voice, he did not dare to ask for anything else. He quickly put away the portrait and knelt down.

After Zhong Huamin waited for Sun Xian to leave, he saluted Zhu Changluo, "Thank you for your consideration."

Zhu Changluo said: "This is nothing. The painting was painted by me. If you don't say it, I won't say it, and Sun Xian dares not say it. But your painting skills are quite good. Have you learned sketching too?"

Zhu Changluo asked this question casually.

After Zhong Huamin heard the word "sketch", a portrait he had seen at Xu Guangqi's house flashed through his mind. He finally remembered where he had seen such a painting.

Zhong Huamin said: "I have never learned it, but I know where I have seen the paintings that Your Highness painted."

When Zhu Changluo heard Zhong Huamin's words, he looked at Zhong Huamin in surprise. He couldn't believe that Zhong Huamin actually said that he had seen sketches.

Zhu Changluo asked, "Where have you seen it?"

Zhong Huamin said: "I have seen it at a young man's home."

Zhu Changluo asked, "What is the name of this young man?"

Zhong Huamin said: "Xu Guangqi."

After hearing the name Xu Guangqi, Zhu Changluo couldn't help but say, "I'm familiar with this person"! Although I haven't read "The Origin of Geometry", I have been abused by Geometry.

Zhu Changluo couldn't help but ask again, "Which yamen is he working in now?"

Zhong Huamin said: "Xu Guangqi has not become an official yet, he is just a scholar now."

Zhu Changluo was in a mess. How could Xu Guangqi? Scholar? Isn’t he a big official? If Zhu Changluo remembers correctly, Xu Guangqi finally ranked at the second-level auxiliary position. How could he be a scholar?

In fact, Xu Guangqi was really a scholar at this time. He passed the imperial examination in the 25th year of Wanli, which is next year. Now he is really a scholar.

Zhu Changluo asked again: "Where is this Xu Guangqi?"

Zhong Huamin said: "Go back to Your Highness, he has returned to his hometown, Shanghai County."

Zhu Changluo said in disappointment: "I've returned to Shanghai. It's a pity that I didn't have the chance to meet him."

Zhong Huamin didn't understand why Zhu Changluo suddenly asked Xu Guangqi, but when he saw Zhu Changluo heard Xu Guangqi return to his hometown, he said it was a pity, which made Zhong Huamin a little puzzled.

Zhong Huamin said: "Have you heard Xu Guangqi's name?"

Zhu Changluo heard Zhong Huamin ask him this, and he knew that his expression was too nervous.

Finally, Zhu Changluo replied ambiguously: "I seem to have heard from someone."

After Zhong Huamin heard Zhu Changluo's answer, he couldn't ask any more. Finally, Zhong Huamin bowed to Zhu Changluo and then said goodbye to him and left Ciqing Palace.

After Zhong Huamin left, Zhu Changluo thought quietly for a while alone.

Xu Guangqi was also a milestone figure that cannot be ignored in the late Ming Dynasty. He had many achievements in his life.

The most relishable thing among them is the "Geometric Original" translated by him and Matteo Ricci. Anyone who has studied the history of junior high school, Xu Guangqi is an unavoidable person when studying the history of the Ming Dynasty. Although he did not ride the wind and waves like Zheng He, he also learned from Matteo Ricci how big the world is.

But these cannot summarize his life, because his achievements are not just about getting to know a foreigner and translating a math masterpiece.

He also had high attainments in agriculture. He was proficient in agriculture and wrote many works, "Complete Book of Agricultural Affairs", "Sweet Potato Shu", "Miscellaneous Shu" of Agricultural Legacy, "Draft of Agricultural Books", "Taixi Water Methods", etc. are all one of his achievements.

In addition to these, Xu Guangqi is also proficient in astronomy. The compilation of the "Chongzhen Calendar" calendar is proof that this calendar is not the kind of calendar perpetual calendar we see in daily life. It is an all-encompassing astronomy and academic work. Moreover, Xu Guangqi also introduced the concept of a circular earth and introduced the concepts of longitude and latitude.

He also provided the first all-natal star map based on the Tycho star table and the traditional Chinese star table, which became the basis for the star table in the Qing Dynasty. In terms of calculation methods, Xu Guangqi also introduced accurate formulas for spherical and plane trigonometry, and first corrected parallax, qi difference and time difference.

Moreover, in addition to the editor-in-chief of the entire book of "Chongzhen Calendar", Xu Guangqi also participated in the specific compilation of books such as "Testing the Heavenly Question", "Daocha", "Daizang Calendar Finger", "Full Meaning of Measurement", and "Daizang Table".

The completion of these achievements can allow Xu Guangqi to leave his name in history in Chinese astronomy and shine through ancient and modern times.

Of course, Xu Guangqi's achievements are much more than that.

Xu Guangqi is also not inferior to his achievements in mathematics.

Xu Guangqi's greatest contribution in mathematics was to translate "The Origin of Geometry" (first 6 volumes) with Matteo Ricci!

Xu Guangqi proposed the practical idea of ​​"the study of degrees", and also wrote two books "Pythagorean meaning" and "Measure similarities and differences". Xu Guangqi first used the word "geometry" as a professional noun in mathematics.

The translation of "The Origin of Geometry" has greatly influenced China's original mathematical learning and research habits, changed the direction of China's mathematical development, and is a major event in the history of Chinese mathematics.

However, it was not until the late Qing Dynasty that the imperial examinations were abolished and schools were established. Elementary geometry, which mainly focuses on "The Original Geometry" and became a compulsory subject in secondary schools.

Moreover, in Xu Guangqi's revision of the calendar, he also discussed in detail the application of mathematics in ten aspects: astronomical calendar, water conservancy engineering, music, weapons and military engineering, accounting and financial management, various construction projects, mechanical manufacturing, geography measurement, medicine, and manufacturing timers. It is also recommended to carry out research on these aspects in sub-school research.

If the emperor at that time approved Xu Guangqi's request, a comprehensive research university might have appeared on this ancient land in the East three hundred years in advance.
Chapter completed!