Zhao Liben explained a few more words before he finished speaking. Zhao Hao took out an envelope from his sleeve and handed it to Zhao Liben:

"This is a contract with Miss Jiang, and a sugar recipe agreed to give her. Please ask my grandfather to deliver it."

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

"Hehe, didn't you say that, Taizu showed his spirit." Zhao Hao smiled vaguely, held Zhao Liben's hand and said, "When we leave, grandpa will watch slowly."

"Yes." Fang Zi was given by his grandson, so Zhao Liben certainly had to respect Zhao Hao.

He then pressed his curiosity in his heart, put the envelope in his arms, hid it closely, 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 sailed away from Dongguan Pier and disappeared from sight.

Then he withdrew his gaze in disgrace.

Just as he was about to take out the envelope, Zhao Xian got into the car again.

Zhao Liben had to withdraw his hand and return home patiently, find a reason to send Zhao Xian away, then return to the study and bolt the door from inside.

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

Unexpectedly, this sugar noodles only have ten big characters of yellow mud soup and pour brown sugar into brown sugar to get white sugar...

Zhao Liben's eyes were wide open, his chin almost shocked to the ground, and he couldn't help but scream: "Oh my God, it's really Taizu's appearance..."

Otherwise, with such a simple method, why would others not even think about it, but let their grandson make money?

After leaving Yangzhou, the fleet headed north all the way, and more than 2,000 miles of water slowly walked, and it took almost twenty days to arrive in Beijing.

The northward it became colder and colder. When you entered the boundary of Shandong, ice formed on the river surface. It was entirely up to countless grain ships to chisel the ice surface day and night to ensure that the grain ships transporting grain to the capital continued to pass.

In fact, half a month ago, the Governor's Office of the Governor of the Canal issued a ban on civilian ships from the canal to ensure smooth transportation.

Of course, if a passenger ship with yellow flag is paid, he can continue to pass through the canal as long as he pays a de-icing money. Therefore, he lends his yellow flag to merchants going north to cover it. It is said that a flag can be exchanged for at least fifty taels.

However, Zhao Shouzheng, Eryang, Wu Kangyuan and other young men naturally looked down on the three cores and two dates, and would not do such a price loss.

These days, Zhao Hao has almost all hid in the cabin except for eating, drinking, defecating and urinating.

He asked Gao Wu to set up a small table on the bed, wrapped in a quilt and roast a brazier all day long, sometimes thinking hard, sometimes writing hard, and working enthusiasm was far better than in Jinling.

‘Oh, if I had to hold on at that time, why should I suffer now?’

Zhao Hao rubbed his sore wrists and put down his brush to rest for a while. He blamed himself for being too lazy at the beginning, but he hated that he was too little when he was using it, so he could only cram the Buddha at the moment...

Wang Wuyang and Hua Shuyang wanted to help, but there were few places to write and think about, and they also needed to draw many pictures. They had never been in contact with each other, so they could only help.

Zhao Hao wrote a geometry booklet. He named it "A First Look at Geometry" based on Lejander's "Basics of Geometry".

Lejander's "Basics of Geometry" is translated from Euclid's "The Origin of Geometry". Lejander used modern language to rewritten it into a popular geometry textbook and has been used in later generations.

The more the two students couldn't understand, the more curious they became. They almost kept pace with Zhao Hao, one left and one right. Every time Zhao Hao wrote a manuscript, the two couldn't wait to study it. They were both extremely smart people, and as they looked, they could see some tricks and became fascinated.

Zhao Hao put down his pen and moved his numb shoulders, but he did not see two disciples coming to massage himself.

He looked sideways and found that the two of them were head-on, studying the manuscripts he had written before. [Zerolingshu.com.]

"Can you understand?" Seeing the two of them fascinated, Zhao Hao was deeply relieved and asked with a smile.

"I don't understand." Hua Shuyang hurriedly replied respectfully: "The student is foolish and I feel that the master is expounding a Tao, which is like mathematics, and it is different from mathematics."

"Yes, it's so magical. Such refined language summarizes the essential truth of thousands of appearances. This is Tao." Wang Wuyang also said with a respectful face: "Master is really an ancient genius. This is a book similar to the Book of Changes."

"This is not what I thought of." Zhao Hao wanted to belong to his name, but unfortunately, the missionary will bring "The Original of Geometry" to China for at most twenty years. Wouldn't he sit on wax at that time?

So he said modestly: "This is written by a Taixi sage named Ou Zi two thousand years ago. He just improved it slightly..."

He still shamelessly swallowed Lejander's credit, who made Mr. Lejander be born two hundred years later?

"Isn't that the pre-Qin hundred schools of thought contend?"

Hua Shuyang and Wang Wuyang were shocked. Unexpectedly, there was such a brilliant civilization outside of China.

"Then the "Original" written by Ou Zi is the "Book of Changes" of Taixi?"

"It can be said that." Zhao Hao nodded slowly. Geometry developed in ancient Greece is recognized as the basis of modern science. Euclid's "The Origin of Geometry" not only explains geometry almost perfectly, but also shows the world a rigorous deduction logic system.

Induction and deduction are two indispensable ways of thinking that want to germinate modern science. Confucian culture re-generated and deduced. If one of the two conditions is lacking, it will be difficult to germinate modern science. What Zhao Hao has to do now is to make up for this defect for the Ming Dynasty in advance... It will be too late to wait until Xu Guangqi comes to do this in a few decades.

Including the lesson I taught to the students before, it is also to help the two get rid of the deep-rooted concept of "harmony between man and nature" and let them realize the laws of nature and the laws of the human world. These two are two different things. They cannot be combined, but should be distinguished.

If you want to promote science, you must first clear the obstacles. This is something that requires great 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 contact with the same year. You might as well print the "First Peeping of Geometry" I wrote into a booklet and give it to the same year. If there are friends, you can contact and discuss more. If someone wants to learn this subject, you can ask him to come to me."

"If they are not interested in geometry, you can package it like this... It is to say that it is investigating things to know, and it is truly realizing the investigation of things to know." Zhao Hao ordered with a cunning smile: "If you truly irrefutably understand knowledge from things, you don't believe that those scholars can sit still."

"Yes, Master." Eryang responded respectfully and kept Zhao Hao's task in his heart.

If it were in the past, they would definitely ask why the master had let go of the threshold for teaching? But from the lesson of "Opening the Eyes to the World", the two of them not only treated Zhao Hao as a teacher, but also regarded him as a preacher who mastered wisdom, and were determined to follow him to the death.

Since it is a preacher, of course the more believers, the better...
Chapter completed!