Although there were more than 1,000 people in the huge auditorium, there was silence at the moment, and everyone opened their eyes wide and their mouths wide, their faces full of disbelief.

In these years, glass has not even been invented, let alone a telescope, and even Galileo Galilei had to be born more than four centuries ago, and everyone in the world only knows that the moon shines, and Chang'e lives on it, but no one has ever heard that the reason why the moon shines is borrowed from the sun's light.

Xu Zizhen didn't wait for them to come back to their senses, and pointed to the second sentence with charcoal: "It is suspected that it is frost on the ground...... Why is there frost on the ground? What is it? Is there a relationship between him and Yuxue? The answer is that they are all changed by water, but they are just different forms of water, and the air contains moisture, and due to the change in temperature, this water becomes rain or snow or frost, and then falls to the ground, and the meaning of this second sentence is the principle of all things, referred to as physics! ”

He drew a circle on the frost character, and then said the third sentence: "Raise your head and look at the bright moon...... Why can people lift their heads, raise their hands, and do all kinds of movements, because the nervous system is dominated by the body, and how does the shape of the object enter the eye? That's because light is refracted into the eye through the air, passes through the human visual system such as the pupil retina, and finally enters the brain to produce images, and this third sentence is amazing, because it contains two things - optics and physiology! ”

Finally, he put charcoal on the fourth sentence: "Bow your head and think of your hometown...... As for the hometown, that is, the place where you were born and raised, some are in the south of the Yangtze River, some are in the north of the Saibei, and some are in the Central Plains, in short, they are different, some have mountains, some have water, and some have nothing, because geology, environment, weather and other factors have created the characteristics of each place, and this is called geography! ”

The last words of Xu Zizhen's last sentence still echoed in the Daguan Auditorium, and when he finished such a large sentence in one breath, no one in the entire auditorium spoke, and everyone's faces were shocked or shocked.

Xu Zizhen's words were too appalling, everything he said was something that these masters or talents present had never heard of, and there were even many words they had never even heard of, and they didn't understand what they meant at all, and after a while, I didn't know who woke up first in the auditorium, and shouted loudly, and then the whole auditorium suddenly erupted in a thunderous cheer.

Regardless of whether they understand what Xu Zizhen said or not, but the people present are all the literati elite of the Great Song Dynasty, and they can quickly figure out things that others can't figure out, although this strange sentence can't understand the specific meaning for the time being, but Xu Zizhen can explain this poem to such a meaning, it is really the first time they have seen it in their lives, and they dare to say that even Li Bai would not have thought that his poem would contain so much unfamiliar knowledge and disciplines.

Dean Jiang and Mr. Gu Yi were also stunned there, and they couldn't come back to their senses for a long time, but when they were in a daze, they saw Xu Zizhen draw a big circle on the word hometown at the end of the poem with charcoal, and the smile on his face suddenly slowly turned into a sneer: "The Jin people invaded the south again, the war is tight, I said a big disrespectful word, now we can still talk about the word hometown, but one day the Jin people really fight, we will either die in battle, or be captured, and none of us can go back then, then the hometown will really become the hometown." ”

Everyone in the audience was stunned, and the auditorium became silent again, Xu Zizhen's words suddenly changed to them, and they couldn't keep up with the rhythm, and what he said also shocked everyone, this is not only a big disrespect, if it is passed into the ears of the officials, this is a big crime full of beheading.

Xu Zizhen ignored everyone's reactions, swept to the audience with blazing eyes, and said slowly: "It's no problem for me to give a lecture, Yi Zhiju said well, I have learned more in my chest, you must have not heard of it, but I want to ask you, the golden dog is about to fight, if your backbone as a descendant of Yan and Huang has not been extinguished, are you willing to sacrifice your life for the country and the people?" If you want, I will open a few special courses, and teach nothing else, but only how to play to your strengths, and where to beat the golden dog from where it came from. ”

Speaking of this, he suddenly jumped on the chair and shouted: "The rise and fall of the world is the responsibility of the husband, tell me, do you want to continue to be a nerd or defend the country?" ”

Xu Zizhen stood at the top with one hand on his waist, his expression was solemn and majestic, and no one was moved by his eyes, and the original silence in the auditorium began to change, at first there was a low buzzing sound, and soon someone stood up violently and shouted excitedly: "I want to protect my family and defend the country!" ”

Before the words fell, another person jumped up and shouted: "I am also willing to abandon my pen and follow Rong to protect my family and defend the country!" ”

Another person stood up, then another, then a group of students stood up, each with excitement on their faces, shouting with all their might: "Defend the homeland and defend the country!" Defend the country! ”

Dean Jiang didn't expect Xu Zizhen to lead the topic here, and the students' reactions were also greatly beyond his expectations, he glanced around in amazement, almost no one could still keep calm, and even many people had tears of excitement in their eyes, standing there with red eyes and shouting hard.

Mr. Gu Yi was also stunned, he lived this age or saw Xu Zizhen's words for the first time, and a few words mobilized the emotions of more than a thousand people to the highest point, he looked at everyone in a daze, and muttered: "It is the responsibility of the rise and fall of the world!" ”

The atmosphere of the scene was almost about to lift the roof of the auditorium, and the students who had been studying hard for many years suddenly put away their pedantic and let go of the passionate feelings that should belong to their age, even the female students who usually didn't even dare to speak loudly and would blush when they saw the living people were also so excited that their faces were flushed, and their eyes flashed with excitement, although they still maintained the last trace of reserve and did not shout with the male students, but it could be seen from their clenched teeth that they were not calm.

Dean Jiang suddenly came to his senses, squeezed to the front of the stage from the earth-shattering sound and crowds, ignored the dense sweat on his forehead, and asked Xu Zizhen loudly: "There are no greedy people in the academy, but they are just scholars, and they have no power to restrain the chicken, how do you let them protect their families and defend the country?" Are you going to teach them how to march and mount and shoot? ”

As soon as these words came out, they suddenly became quiet, yes, there are all nerds here, let them run for miles and breathe for a long time, if they really want to change into military uniforms to fight, how can it be so easy?

Xu Zizhen grinned: "Who said let them go to the battlefield to fight?" Scholars have their own usefulness as scholars, and it is not only soldiers who need to fight wars. ”