Yun Shu has been depressed for several days, the waterwheel is successful, but the Su brothers are crazy! The two pestered him all day long to make him invent all kinds of strange things. The pen "Fun" Pavilion www.biquge.info after educating them many times that theory is the basis of practice to no avail, Yun Shu took the fathers of the two over, and the fathers came naturally not bad for the old lady, so the Su family was taken to Ping'an Village.

Since Su Xun moved to Ping'an Village, the Su brothers immediately breathed a sigh of relief, and honestly followed the other classmates to class, eat and play games. Yun Shu looked at the two clever boys, it seemed that they knew the news of the drought.

Bringing Su Xun over just solved his burden, although Yun Shu's understanding of Confucian classics is thorough, there are still many differences with the traditional ideas of the Yan and Song dynasties.

As soon as Su Xun came to Yun Shu, he was really good to divide labor with him, and the two also listened to each other's lectures to verify what they had learned, and for a while everyone in the school became students.

Today is the fifth day, tomorrow is a weekend, the children are a little restless today, because Yun Shu plans to explain flying, Wang Fugui and Lao Hantou took up a place in the school early, Su Xun gave up the position to Li Hu in the style of a humble gentleman, but he didn't expect to squat at the back, but he enjoyed it.

Yun Shu took the wooden plane and cow tendon made by the old man, the prototype of this plane is Yun Shu's childhood toy, rubber band powered plane, don't look at this small plane, the dynamic principle is exactly the same as the real plane.

Yun Shu was shocked when he saw so many people in the classroom, he couldn't squeeze in, Yun Shu on the podium took out the plane and said to everyone: "My paper kite is unusual, it can fly in the air by itself in a while!" ”

Everyone looked at Yun Shu with their mouths wide open, and Su Shi shook his head with a look of defeat and said, "Sir, you are too much of a failure!" I must tell you, the most liberated disciple of you, that what you have in your hand is not a paper kite, but a strangely shaped wooden magpie. What is the leaf on the front? ”

Well, it turns out that there were model airplanes in ancient times, although they are in the shape of birds, but some still adhere to some aerodynamic standards, such as the wooden magpie in Su Shi's hand that spreads its wings and flies, which is almost the same as the modern model airplane, and the winged body is also streamlined.

And the small plane in Yun Shu's hand was much more shivering, the fuselage made of thin wooden sticks seemed to be broken when the wind blew, the flat and long wings looked extremely weird, and the tail was even more protruding, which could not be compared with the little fat man's wooden magpie at all.

Yun Shu, who couldn't bear it in Su Shi's contemptuous eyes, picked up the wooden plane and said to the little fat man: "Su Shi, your wooden magpie is really majestic and magnificent!" But do you dare to compare yourself with your teacher? See whose magpie flies high and far? ”

The little fat man proudly patted the fat on his chest and said, "Of course I dare to compare, but I want Uncle Li Hu to help me throw it, I don't have the strength of Mr.!" ”

Yun Shu nodded and said, "No problem!" What conditions do you have to be a teacher, it depends on you, if my wooden magpie flies farther than yours, you have to accept a punishment. If the Mu Magpie who is a teacher is not as good as you, how about tossing the experiment with the object as you like? ”

Su Shi nodded with small eyes and said, "Xiao Zhe, you wait, soon the master's Gewu laboratory will be ours!" ”

Yun Shu built a huge courtyard in the north corner of the mountain village, with many rooms in it, and there was not gray-black smoke coming out. Yun Shu forbade everyone to enter, and the mystery was really uncomfortable for the curious Su family brothers not to explore it.

Su Xun shook his head, this kid always looks like he is smart, Yun Shu is not a good-looking person at all, if there is no chance of winning, even if you provoke him, it is useless, watching his son fall into the pit dug by Yun Shu Su Xun is very happy, although Yun Shu's pit is a little painful, but there will be no big deal, it is better than falling into the abyss in the future.

Su Shixiong came to the square in the village with high spirits, except for the people guarding the city wall, all the men, women and children of the village came, and even Liu Ningjing and Huangfu Qian's two daughters also wanted to see the game between Yunshu's master and apprentice. The little fat man saw that there were so many people around him, and he couldn't help but straighten his chest again.

handed the wooden magpie in his hand to Li Hu, who was eager to try, Li Hu, who had been pulling a bow and shooting arrows all the year round, was born in the forbidden army's archery class, and had an amazing arm strength in hunting in the mountains all year round, and most of the people were optimistic about Su Shi's wooden magpie.

Yan Song people are especially good, Guan Pu has already begun to bet that Su Shi's Guan Pu flies farther than Yun Shu's. Lao Hantou and Wang Fugui unanimously supported Yun Shu. In the eyes of the two of them, Yun Shu had no reason to lose at all.

In the expectation of everyone, Li Hu riveted his strength and threw Su Shi's wooden magpie out, and the eagle-like wooden magpie flew in the air for a long distance, and finally fell to the ground with its head turned on its heels, and it could not be guaranteed to fly smoothly in the air without a vertical tail.

Everyone marveled at Li Hu's arm strength and Su Shi's wooden magpie exquisiteness, watching the little fat man proudly wipe the wooden magpie in his hand, Yun Shu smiled silently, and rotated the propeller of the simple model aircraft in his hand in circles.

The cow tendon has been stretched to the limit, Yun Shu let go of his hand and gently threw the plane out, the small wooden plane flew out quickly in the surprised eyes of everyone, and the cow tendon fully released the stored power.

Su Shi stared blankly at the wooden magpie flying in the air, but he didn't expect that this seemingly weak and simple wooden magpie could fly smoothly in the air for so long! He looked down at the wooden magpie in his hand that was shiny by himself, and slowly fell into deep thought.

Su Zhe has been following the wooden magpie in the sky, and when he is about to reach the entrance of the village, the wooden magpie loses the power to glide and slowly lands on the ground. Su Zhe beckoned to everyone in the distance.

Yun Shu himself was taken aback, the strength of the cow tendon was so much greater than the rubber band! This model airplane actually flew a distance of almost 300 meters. Su Zhe panted and ran back and said, "Mr. Mu Que flew smoothly in the air and landed like a swallow." ”

Looking at everyone's puzzled eyes, Yun Shu said: "There seems to be nothing in the air, but in fact, the air is everywhere, Su Shi, your plank, Su Zhe, you use a wooden stick to wave the two at the same time, which is faster?" ”

Su Shi didn't think about it and said, "Of course, the speed of the wooden stick is fast!" ”

Yun Shu nodded and said, "That's right!" This is the air resistance. Your wooden magpie is too large and not lightweight, so it flew in the air for a while and was blocked by the resistance in the air and fell to the ground, while my wooden magpie gained sustained strength because of its light texture and the power of the cow tendon to drive the rotation of the propeller, and the tail balance behind it, so it would not somersault in the air. ”

Su Shi nodded in realization.

As a liberal arts student, Yun Shu knows so much about this kind of science knowledge. This is mainly to inspire students to explore the rise of Gewu, in the official Yan and Song dynasties, literati can easily get lost in the struggle between the Confucian classics and the court, and to maintain a heart to explore the truth must start from the baby.

In Yun Shu's opinion, it should not be too much of a problem for the students of Ping'an Village to be admitted to the examination under Su Xun and his new education method. Next month is the children's exam in Taoyuan County, although Yun Shu himself skipped the hospital exam and the township exam, but he also wanted to go to the field to investigate the scene of the Yansong exam.

Huangfu Qian pestered Yun Shu to ask him to make two wooden magpies for himself and Sister Jing, and Liu Ningjing persuaded: "We do it ourselves, and I am not uncommon for thieves to do it!" Yun Shu looked at Liu Ningjing and said, "You haven't lost your breath for so long?" ”

Liu Ningjing's beautiful eyes rolled: "Who has time to be angry with you little thief?" After speaking, he moved the lotus step towards the small courtyard.

Huangfu Qian jumped up and down and chased her back and said with a smile: "Brother Yun, you are so stupid!" ”

Looking at Liu Ningjing, who played dumb riddles for herself, Yun Shu was helpless for a while, the two girls were eccentric and the other was as cold as ice, coupled with Ling'er's simple loveliness, Yun Shu thought about the "happy life" in the future.

From monogamy to Yan Song, he thought that he could start the stallion mode, who would have thought that the two women themselves would not be even, and I really admired how his future father-in-law could live for so long under the siege and interception of so many women in the harem.

Back at home, the stone table in the small courtyard was already full of all kinds of delicious food, stewed meat, pancakes, sausages, etc., Yun Shu was dazzled, but he didn't expect Liu Ningjing to really make good tea and rice.

Yun Shu is used to the Su family brothers coming to eat, they used to eat together, but since Su Xun moved his family to Ping'an Village, the Su brothers were taken home to eat, but they still came to Yun Shu from time to time.

Looking at the little fat man on the other side gobbling up, Yun Shu couldn't help but worry about his stomach, after eating such a small meal, he gobbled it back? Su Zhe on the side looked elegant, and eating this meal in small bites was in stark contrast to Su Shi.

Yun Shu decided to adjust the privacy habits of the two, Su Xun's house not far from the old road, Su Xun was holding a copy of "Wenyuan Yinghua" and reading it with relish, his eyes were almost on the book and he didn't know it, Yun Shu smiled bitterly and shook his head, this family has no good living habits, no wonder it is recorded in the history books that literati have many eye diseases.

Yun Shu coughed and said, "Brother Ming Yun is afraid that his eyes will be broken when he reads like this!" ”

"Oh? Brother Yun Xian is here, hurry up and go down, for my brother, this "Wenyuan Yinghua" was annotated by Uncle Ouyang Yong, a university scholar, and the articles in it are wonderful, and the sky is dark, and the closer I look, hehe~"

Looking at Su Xun's embarrassed appearance, Yun Shu said with a smile: "No matter how good Brother Mingyun's article is, you must have the idea to protect your eyes, otherwise if you suffer from eye disease, you can't read it even if you want to!" ”

"Could it be that this eye disease is due to reading a book?" Su Xun asked puzzled.

"That's not true, but does Brother Mingyun feel that his eyesight is not as good as before?"

After Yun Shu reminded Su Xun in surprise: "What the virtuous brother said is very true! Not only is it not as good as before, but it is not as good as before! When my brother was young, he could know whether it was a courtyard or a maid a hundred and ten steps away from Cheng's house, a clumsy Jing or an old woman, but now I am afraid that he does not have that ability. After speaking, he found that Yun Shu's strange eyes smiled awkwardly.

Yun Shu looked at Su Xun with a look that I understood, and then changed the topic and asked, "Is it because I study more for my brother?" ”

"It's not the fault of reading too much, it's caused by the incorrect use of eyes, and now the students in the school have to do eye exercises every day! Half an hour is limited. Yun Shu remembered the eye exercises supervised by the teacher in elementary school, when she was often named by the teacher, and now she thinks that she should really thank the kind old lady.