Zhao Liben explained two more sentences before he finished speaking, Zhao Hao took out an envelope from his sleeve and handed it to Zhao Liben:

"Here is the contract with Miss Jiang, and the sugar recipe agreed to be given to her, please ask grandpa to deliver it on her behalf."

"Oh? This is your recipe for making frost into snow? Zhao Liben's eyes lit up, and he took the envelope with a curious face and said, "Grandpa really can't figure it out, where did you learn this amazing skill?" ”

"Hehe, didn't you say it, Taizu appeared." Zhao Hao smiled vaguely, pressed Zhao Liben's hand and said, "When we leave, grandpa will take a look." ”

"Hmm." The recipe was given by his grandson, and of course Zhao Liben had to respect Zhao Hao.

He suppressed his curiosity, put the envelope in his arms, hid it close to him, and after confirming that it was correct, he came out to send his children and grandchildren to the dock.

Zhao Liben was in the carriage, looking at the passenger ship full of yellow flags, slowly sailing away from Dongguan Wharf and disappearing from sight.

Only then did he retract his gaze in amazement.

He was just about to take out the envelope, and Zhao Xian got into the car again.

Zhao Liben had no choice but to withdraw his hand, return home patiently, find a random reason to send Zhao Xian away, and then return to the study and bolt the door from the inside.

After doing all this, he carefully took out the envelope, pulled out the sugar recipe and looked at it with bated breath.

Who knows, this sugar square noodles only has ten big characters - white sugar can be obtained by pouring brown sugar in yellow mud soup......

Zhao Liben's eyes widened, his jaw almost hit the ground, and he couldn't help but cry out: "God, it's really Taizu's manifestation......

Otherwise, with such a simple method, why can't others even think of it, but let their grandchildren's earnings fly?

~~

After leaving Yangzhou, the fleet traveled all the way north, more than 2,000 miles of waterway, and it took almost 20 days to reach Beijing.

The farther north you go, the more cold it gets, and when you enter the boundary of Shandong, the river freezes. It was all up to countless Cao Ding who chiseled the ice day and night to ensure the continued passage of the Cao ships transporting grain to Beijing.

As a matter of fact, half a month ago, the Cao Yun Governor's Office issued a decree prohibiting a civilian ship from going north from the canal to ensure the smooth flow of Cao Yun.

Of course, passenger ships with yellow flags can continue to pass through the canal as long as they pay a de-icing fee. It is a lot of moves, lending their yellow flags to merchants in the north as cover, and it is said that a flag can be exchanged for at least fifty taels.

However, Zhao Shouzheng, Eryang, and Wu Kangyuan, these sons, naturally don't look down on the two jujubes, and they won't do this kind of thing.

These days, Zhao Hao is almost hiding in the cabin except for eating, drinking, and Lazar.

He asked Gao Wu to set up a small table for himself on the bed, wrapped in a quilt and baking a brazier all day long, sometimes meditating, sometimes writing hard, and his enthusiasm for work was far better than when he was in Jinling.

'Alas, if you had grasped it then, why should you suffer now?' ’

Zhao Hao rubbed his sore wrist and put down the brush to rest for a while. I only blamed myself for being too lazy at the beginning, but I hated less when the book was used, so I could only hold on temporarily......

Wang Wuyang and Hua Shuyang wanted to help, but there are few places to write in this book, many places to think, and many drawings need to be drawn. They had never been touched, and they could only help.

Zhao Hao wrote a geometry book, which he based on Legendre's "Foundations of Geometry" and named it "A Glimpse of Geometry".

Legendre's Fundamentals of Geometry was translated from Euclid's Prima Geometry, which was rewritten into a popular geometry textbook in modern language and has been used in later generations.

The more the two students couldn't understand it, the more curious they became. They almost didn't leave an inch, one left and one right by Zhao Hao's side. Every time Zhao Hao wrote a manuscript, the two of them couldn't wait to study it, they were both extremely smart, and they could see the way when they looked at it, and they were fascinated.

~~

Zhao Hao put down his pen and moved his sore shoulders, but he didn't see two disciples to massage him.

He looked sideways, and it turned out that the two of them were facing each other, studying the manuscript he had written earlier.

"Can you read it?" Seeing the fascinated appearance of the two, Zhao Hao was deeply pleased, so he asked with a smile.

"I don't seem to understand." Hua Shuyang hurriedly replied: "The student is stupid, and I feel that the master is expounding a kind of Tao, like mathematics, and it is different from mathematics. ”

"yes, it's amazing. Such a concise language sums up the essential truth of thousands of appearances, and this is the Tao. Wang Wuyang also said with reverence on his face: "Master is really a genius of the ancients, this is a book similar to the Book of Changes." ”

"It's not something I came up with." Zhao Hao wanted to belong to his own name, but unfortunately, in another twenty years at most, the missionaries would bring the "Geometric Original" to China.

So he said with a humble face: "This is written two thousand years ago, by a Taixi sage named Ouzi, and the teacher only slightly improved it......

He still shamelessly swallowed the credit of Le Jeande, who let Mr. Le be born in two hundred years?

"Isn't that the time when the hundred schools of thought of the pre-Qin Dynasty were contending?"

Hua Shuyang and Wang Wuyang couldn't help but be shocked, they didn't expect that outside of China, there was such a glorious civilization.

"Then Ouzi's "Original" is Taixi's "Book of Changes", right?"

"So to speak." Zhao Hao nodded slowly. Geometry developed in ancient Greece is recognized as the foundation of modern science. Euclid's Geometry not only expounded geometry almost perfectly, but also showed the world a rigorous system of deductive logic.

Induction and deduction are two indispensable ways of thinking for the germination of modern science. Confucian culture, on the other hand, emphasizes induction and ignores deduction. Without one of these two conditions, it is difficult to germinate modern science. What Zhao Hao has to do now is to make up for this defect for Daming in advance...... By the time Xu Guangqi came to do it decades later, it would be too late.

Including the lesson I gave to my students. It is also to let the two get rid of the deep-rooted concept of 'the unity of heaven and man', and let them realize that the laws of nature and the laws of the human world are two different things, and they cannot be combined together, but must be separated.

If you want to promote science, you must first clear the obstacles, and these are things that take a lot of effort and a long time to do......

~~

Along the way, Zhao Hao introduced the many benefits of geometry to his disciples, and assigned a task to Eryang.

He said to his disciples, "After you enter Beijing, you should have more dealings with the same year. You might as well print my "A Glimpse of Geometry" as a booklet and give it to the same year. If you have a like-minded person, you can get in touch with him a lot, discuss it a lot, and if someone wants to learn this knowledge, you can ask him to come to me. ”

"If they're not interested in geometry, you can package it like this...... It is said that it is in the knowledge of things, and it is the real realization of the knowledge of things. Zhao Hao smiled slyly and commanded: "If you really know irrefutably, you don't believe that those who read can sit still." ”

"Yes, Master." Eryang hurriedly responded and kept Zhao Hao's task firmly in mind.

If it had been in the past, they would have asked why Master had lowered the threshold for teaching. But from the beginning of the lesson of 'opening their eyes to the world', the two not only served Zhao Hao as a teacher, but also regarded him as a preacher with wisdom, and they were determined to follow him to the death.

Since it is preaching, of course, the more believers, the better......

ps. The second more guaranteed is delivered, and the monthly pass is recommended!!