When Duan Wujiu saw that Liu Zhiheng was about to start giving formal lessons, he wanted to turn around and leave. Unexpectedly, he was stopped by Liu Zhiheng as soon as he made a move.
"That classmate standing at the door, what are you doing? Do you want to skip class?"
Duan Wujiu paused for a moment, then looked up, and saw thirty students in the entire study turning back to look at him.
Duan Wu Jiu did not wear the prince's uniform today. He was dressed like a handsome young man. He had a fine silk scarf on his head, a round collar robe, and a jade-encrusted belt around his waist. He was fair and slender. There is also a red jade ring on his hand, and his boots are also embroidered with exquisite patterns, making the whole person look noble and elegant.
A student in the study could not help but curl his lips and murmured in a low voice: "You dress up so ostentatiously, you can tell that you are not someone who studies peacefully..."
"that is……"
Ah Heng had already called herself, and Duan Wujiu couldn't really leave. Today was her first time teaching the students, and he would never let her down.
So Duan Wujiu could only walk into the study, stood in the last row of the school, and bowed humbly to Liu Zhiheng, "Student is late, I hope you will forgive me."
Liu Zhiheng looked at Duan Wu Jiu. The afternoon sun shining on him seemed to cast a soft light on her body, making her already handsome face even more elegant. Although the room was full of good-looking male disciples, as long as Duan Wu Jiu stood there, the others immediately seemed ordinary.
Maybe this is called Yan pressure.
Liu Zhiheng cleared his throat, deliberately looked serious, and said, "Don't be late next time. Why don't you find a seat and sit down quickly?"
"Yes," Duan Wujiu bowed again and said with a smile, "Thank you, Master."
Duan Wu Jiu then sat down at the desk at the end of the study. Seeing this, Zi Yang quickly came over to put pen, ink, paper and inkstones on Duan Wu Jiu and put down a brand new test paper.
Seeing that Duan Wujiu had also sat down, Liu Zhiheng unfolded the test paper and prepared to start speaking.
"Today's time is limited. I'm afraid it will be difficult to explain all the topics clearly. You will bite off more than you can chew. Let's pick one topic and talk about it this afternoon. Which one do you want to hear?"
Everyone raised their hands.
Liu Zhiheng randomly clicked on a student sitting in the first row and asked him to say that after all, those who are willing to take the initiative to sit in the first row must be students who are eager to learn and like to perform in front of the teacher.
"Master, I want to know how to turn bitter land into fertile farmland."
"Yes! We want to know too!"
"yes!"
Other students also responded. Liu Zhiheng nodded and looked at Chun Cao. Chun Cao immediately pushed out a board with white paper on it. Liu Zhiheng stood up, picked up a pen and started drawing on it.
Liu Zhiheng first talked about what kind of climate and geographical environment would produce saline-alkali land. Liu Zhiheng explained it in a simple and easy-to-understand way, tracing back to the source, and even drew what the strata under the saline-alkali land look like.
"Master? How do you know what it's like under this salt-alkali land?"
"I have dug it. I can take you to dig it another day."
The students in the front row stood up excitedly and said, "Master, why don't you take us to dig together today!"
"Sit down!"
The student quickly sat down again.
"Why are you so anxious? Are you afraid that you won't have the chance to go to the wild? I'm afraid that you will cry and beg me not to take you out in the future."
"How could it be!" The student once stood up excitedly and said, "Now that we are here, we will not be afraid of hardship and hardship, and I will never give up halfway. Master, you can rest assured."
"Yes!" Everyone agreed.
Liu Zhiheng sighed helplessly. As expected, the students sitting in the first row loved showing off.
"What's your name?" Liu Zhiheng asked.
"Student Wang Chong is a student of Tianfu Academy."
"Very good, everyone, remember how sworn he is now. In three days, Master will take you to the wild, so that you can feel what it's like to be out in the wild and understand what field exploration is all about. Wang Chong, I hope you can still do it by then. So determined.”
"The student will not disappoint the master!"
"Sit down."
Wang Chong sat down proudly, feeling that he was the first to be remembered by his master.
Liu Zhiheng continued to explain to the students why white salt flakes precipitate in saline-alkali land, what is the principle, and what method can be used to dilute it.
"In short, the depth of groundwater and the violent evaporation of water determine that salt flakes will precipitate in saline-alkali lands. As long as ditches are used properly to drain water and the land is flushed, saline-alkali lands in certain areas can be desalinated."
After listening to Liu Zhiheng's story, someone raised his hand and asked, "Master, most of the bitter soil and saline-alkali land you mentioned are in arid places. Where do these places get so much water for desalination?"
"Your name is Huo Songnian, right?"
"yes."
"Very good. Sometimes learning to ask the right questions is more important than how to answer them. You asked this question very well."
Liu Zhiheng smiled tenderly at Huo Songnian. Huo Songnian's face instantly turned red when he saw his master's smile. He quickly lowered his head in embarrassment, not daring to look at Liu Zhiheng again.
"Understanding why salt flakes precipitate in saline-alkali land only clarifies the source of the problem, but what is needed to solve the problem is a steady supply of water."
Liu Zhiheng began to explain which places have sufficient water resources but cannot leave them, and what kind of water conservancy facilities can be built in such places.
He talked like this for several hours, and all the students were extremely fascinated.
If everyone had doubts about Liu Zhiheng at the beginning, they are now completely convinced. Master Liu's knowledge is a self-contained system that they have never encountered elsewhere before.
Everyone also understood the good intentions of the masters and deans of their colleges who still sent them to Pingzhou to listen to lectures for two months at the risk of affecting Qiu Wei's grades. Being able to attend Master Liu's class is indeed an opportunity that most people can't ask for.
The atmosphere in the classroom gradually became more lively. Duan Wujiu sat in the last row and listened very seriously.
He realized that he still thought of Liu Zhiheng too simply. She was far more intelligent, knowledgeable, witty, wise and funny than he thought. Standing on the podium, Liu Zhiheng's whole body seemed to be radiating light, making people unable to take their eyes away. Even her beauty was not so conspicuous at this moment.
Duan Wu Jiu felt that his decision was indeed right. His Ah Heng should stay away from all conspiracies and tricks, always be aloof, and always be respected and worshiped by others.
Liu Zhiheng's mouth was dry and she couldn't talk anymore, so she let the students discuss freely and ask her if they didn't understand anything.
Seeing her stop, Chun Cao quickly handed over the tea that had been dried. Liu Zhiheng drank it all in one gulp, and then felt that his burning throat felt better.
The students sitting below began to discuss and exchange what they had learned today enthusiastically. You must know that if you really master these methods mentioned by the Master, not only can you desalinize saline-alkali land, but you can also reduce many disasters caused by floods.
Liu Zhiheng was a little relieved to see the students expressing their feelings directly. They are indeed elite students selected from thousands of people. Judging from their impassioned looks, they really want to do something for the country and the people, and for the common people who are suffering all over the world.
"Master, if you want to build so many water conservancy projects, it will take a lot of manpower and material resources. I'm afraid the national treasury will be empty."
"It doesn't matter. Master knows where there are mines. Gold mines, silver mines, iron mines, coal mines. Master knows how to find them. I will teach you slowly in the future."
