Guo Zhiyuan laughed, this tall young man's careful thinking naturally couldn't hide from him, so he laughed and said: "This is not a public court, you can call me sir, you don't have to call me master, then let me ask you again, what about after you get famous?" ……”

The tall boy was a little flustered, his answer was taught by his father who was the shopkeeper, but he didn't expect Guo Zhiyuan to continue to ask, and his father didn't teach the answer later, so he had to answer hard: "After gaining fame, you can become an official, and you can earn a lot of silver......

Guo Zhiyuan smiled and nodded: "Okay, you are also telling the truth, and you have to praise, but I want to correct your words a little, you can't make a lot of money when you are an official, and the official is only more than forty taels of silver a year, unless you are a corrupt official, but when you are a corrupt official, you will be beheaded, well, let me summarize your words, you study for the sake of being an official, is there any other answer?" ……”

Someone started, and the Mengsheng people became more courageous, and their speeches became more and more enthusiastic, and all kinds of strange answers came out, such as reading can eat enough food and meat, reading can wear beautiful clothes, reading is respected, reading people have status, etc., no matter what kind of answer Mengsheng said, Guo Zhiyuan would smile and nod and praise, which also made Mengsheng feel that this county official seemed to be not so terrible and very kind.

When the Mengsheng people had almost finished speaking, Guo Zhiyuan said aloud: "Everyone's answers just now have a certain amount of truth, but they are not comprehensive, have you ever thought about it, if one day there is a natural disaster, and the crops in the field can not grow food, can you still guarantee that you can eat enough to eat?" If one day the enemy country fights, and you study and become an official but you are arrested and become a prisoner, can studying still guarantee your status? For example, there were many bandits in Gutian before, can reading ensure that your parents and relatives will not be robbed and bullied by bandits? ……”

Speaking of this, Guo Zhiyuan waved his hand vigorously and said loudly: "If our country and our nation are not rich and strong enough, then it is useless for us to read more books!" Only when our country and our nation are rich and strong, can everyone have food and clothing, can enemy countries not dare to invade us, and can our parents and relatives not be bullied, so I hope you can set a goal from today and study for the rise of China! ……”

Mengsheng looked at Guo Zhiyuan in surprise, although Guo Zhiyuan's words still seemed to be a little understandable to their age, but they were infected by Guo Zhiyuan's pride and momentum, Guo Zhiyuan's words were like a seed, quietly sown in their hearts, and now naturally they can't see anything, but one day, this seed will take root and sprout, and finally grow into a towering tree!

Calmed down, Guo Zhiyuan began to prepare for a formal lecture, Guo Zhiyuan actually had a headache for a long time about what he talked about in his first class, he was not good at talking about the Four Books and Five Classics, he could only talk about some modern knowledge, but he couldn't talk about things that were too advanced, because it would be easy to be attacked and spread heresies, causing him unnecessary trouble.

So he can only talk about some simple modern knowledge, but even if he only talks about simple modern knowledge, he must have a name, otherwise it is also easy to be criticized, he first turned around and wrote two words on the wooden board behind him "Gewu", and then said loudly: "Sage Yun: Gewu Zhizhi, what is Gewu?" Everything in heaven and earth has a reason, and Gewu is to deduce all things in heaven and earth, and draw a reason from it, why do birds fly? Why do fish live in water for so long without dying? …… Of course, it is not enough to understand the truth, we also need to unite knowledge and action, for example, if we know the truth of why birds can fly in the sky, can we let people fly in the sky? If we can come up with a way to let people fly in the sky, then we can deduce why birds can fly in the sky The truth will have a practical effect, for example, now it takes us two days to get from Gutian to Fuzhou City, if we can fly there, it may only take half an hour to arrive, this is the benefit of the unity of knowledge and action......"

This time, not only Mengsheng, but even Xu Guangqi looked at Guo Zhiyuan in surprise, Guo Zhiyuan's words were too unbelievable, he was still under the guise of a saint, Guo Zhiyuan had already guessed that they would react like this, and said with a smile: "You will definitely say that I am talking nonsense, how can people fly in the sky?" Let's not jump to conclusions, let's do an experiment first......"

Saying that, Guo Zhiyuan took out a Kong Ming lantern from under the table, which he spent a night making last night, he is not good at handicraft, so the appearance of the mask is a bit ugly, fortunately, the production of Kong Ming lantern is simple, use a few thin bamboo pieces to tie a shelf, paste paper on the outside, and hang a candle below to make it.

Kong Ming lanterns naturally have existed for a long time in this era, but Gutian does not have the custom of putting Kong Ming lanterns, so the Mengsheng present have never played, and they watched Guo Zhiyuan light the candle with a novel face, and then the Kong Ming lantern slowly rose after the air was heated, and their youthful nature was completely released, and they clapped their hands and stood up excitedly.

Guo Zhiyuan pointed to the slowly rising Kong Ming lantern and smiled: "It's interesting, isn't it?" So we might as well think about it, if we make this Kong Ming lantern a little bigger, cover it with leather instead of paper, and hang a bamboo basket underneath for people to sit on it, will that person be able to fly? ……”

As soon as he said this, Meng Sheng was fine, but the eyes of Xu Guangqi and the others were all lit up, especially Zhao Shizhen, who was even more excited and trembling, if he didn't know that Guo Zhiyuan was still teaching, he was afraid that he would rush up and grab Guo Zhiyuan to ask for advice!

Next, Guo Zhiyuan is basically equivalent to directly moving out "100,000 Whys", picking some questions that people in this era can understand and start talking, interspersed with a few small experiments in the middle, "100,000 Whys" was originally a modern popular science book dedicated to primary school students, so it will not be too profound, just suitable for the age of these Mengsheng, coupled with Guo Zhiyuan's special teaching method, it aroused their great interest in learning, and even a few Mengsheng with high understanding also took the initiative to stand up and ask questions.

Guo Zhiyuan is a traverser, with modern knowledge hundreds of years ahead of this era, and he can cope with it at first, but Xu Guangqi and a few of them actually added to the chaos, and they also stood up from time to time to ask questions, Guo Zhiyuan was a little worried that he would be exposed if he continued to talk about it, after all, he was just a liberal arts student, and his physics grades were not very good, so he coughed dryly and said: "That's all for today, I hope you can not only remember the knowledge I just talked about, but also be able to think about how to apply this knowledge to our actual life. When we see a phenomenon that we can't understand, can we ask a few more whys? That's what I expect from you! ……”