People in Datang have been expelled from school

Chapter 83
Daniel hurriedly said, "You don't need to climb trees."

Li Shimin thought for a while and then said to Li Junxian, "Then it would be a good idea to chop down the tree."

Daniel said again: "There is no need to chop down trees, this is the homework assigned by our teacher."

"Operation?"

"Ok!"

Daniel said, "The teacher said that you can measure the height of the tree without touching it."

Li Shimin smiled and said, "If you want to measure the height of this tree, how can you not touch it."

Da Niu ordered a group of children to bring a stick that was ten feet long.

Li Shimin looked curious and saw the group of children staring at the sun, stood the stick beside the big tree and began to measure the shadow of the tree and the stick.

After a while, Li Shimin asked, "Have you measured it?"

"It's been calculated, there are three feet in total." Daniel replied.

"Three feet three..."

Li Shimin was amazed at how these children figured it out. Li Shimin said to Li Junxian, "Climb up and try to measure it."

Daniel handed Li Junxian a rope and said, "This rope is about six feet long, just hang it on the top of the tree."

Li Junxian climbed onto the tree trunk in a few moments and hung one end of the rope on the top of the tree.

The rope was attached to the tree trunk all the way to the ground, Fang Xuanling tore off the excess rope that fell on the ground, measured it with his hand, and said, "Your Majesty, this rope was originally six feet long and now there is still two feet and five feet left, these children are right. , it should be three feet three."

Li Junxian had already jumped off the tree.

Li Shimin once again recalled what these children had done.

I wondered how they could use the shadow of a stick and the shadow of a tree to calculate the height of a tree so easily.

"Xuanling, do you know what Li Zhengjing is teaching the children at Jingyang Academy?"

Fang Xuanling replied: "I don't know, but I heard Kong Yingda said it seems to be some truth and arithmetic."

"Numerical..."

Li Shimin asked Daniel, "How did you figure it out?"

Daniel grinned and said, "It's actually very simple."

Simple?Li Shimin smiled bitterly, why he couldn't understand something simple for a group of children.

Daniel explained: "At the same time, the angle of the sun's light is the same, and the angle of the stick and the tree in the horizontal position is the same. Three feet and three feet, so the proportional relationship can get the height of the tree."

After Fang Xuanling listened to clarify his thoughts, he understood that it was indeed a very easy way.

Li Shimin asked Daniel again, "You said this is easy, will Li Zheng teach you more difficult things?"

"Of course." Daniel said proudly: "I dare to ask when the sun is closest to us."

Li Shimin smiled and said, "Of course it's in the morning and evening, when the sun is the biggest."

Daniel asked again: "Then why is the sun the hottest at noon?"

this……

Li Shimin's smile stopped abruptly.

Just want to ask, Daniel has run away with a group of children.

Li Shimin and Fang Xuanling froze in place.

The sun is the biggest in the morning, the sun is the hottest in the noon...

Li Shimin thought about it for a long time but couldn't figure it out. He said with a dark face: "Li Zheng teaches the children all the time, some kind of crooked way."

Fang Xuanling smiled awkwardly.

What would a ten-year-old child do?
Maybe the ten-year-old children in Chang'an can't even count, so the children here already have such complicated calculations?

A few people strolled around the village again and found that there was a large box every other section of the road, with three large-character trash cans written on the box.

No wonder the village is so clean. It turns out that they have a special box for garbage, and there is a sign next to the garbage can. The sign says please don't litter.

It looks very particular.

Thinking that some streets in Chang'an are in a mess today, Li Shimin felt that this thing could also be placed in Chang'an, and this trip would benefit a lot.

Fang Xuanling saw a large field of rice planted by the river beach.

"Your Majesty, these ears of rice have bent the rhizomes down."

Li Shimin also looked at these rice ears, the grains were very full, and unexpectedly saw fish swimming in the ditch of the rice field.

Most of the people in Chang'an eat millet. There is indeed a variety of rice, but it is very rare and it is too difficult to cultivate.

As early as the Wude years, some people said that the rice seeds from the south were brought to Chang'an for planting.

Also tried many times and the result is not very satisfactory.

Then gave up.

Li Shimin looked at these rice ears, and it was the first time he saw such plump rice ears.

It seems that it is different from the rice ears I have seen before.

On a high slope in the distance of Jingyang County, Li Shimin, Fang Xuanling, and Li Junxian stood in the distance and looked at Li Tai and Li Zheng.

One fat and one thin sits by the river and eats, it is very pleasant.

Li Tai ate the corn and said, "This corn is still delicious when cooked, soft and sweet."

"Li Zheng."

Hearing the familiar call, Li Zheng looked back, "Brother, why are you here?"

Li Shimin smiled and said, "Come and see you, how are you doing recently?"

"It's all pretty good."

Li Tai hadn't turned around yet, when he heard this familiar voice that could no longer be familiar, he was stunned like petrification and didn't dare to turn back.

"Long time no see, brother, why is your complexion getting worse and worse."

Li Shimin smiled and said, "There have been a lot of troubles recently."

Li Zheng said to Li Tai: "Fatty! Come and meet, this is the brother I told you before."

Li Shimin's smile froze on his face, how could Li Zheng call me my son like that?
Even if Li Tai is fatter, no one would dare to call him that.

Li Tai turned his head mechanically and saw Fang Xuanling and Li Junxian.

Look at the smiles of his father and Li Zheng again.

"Qing Que, why didn't you speak?" Li Shimin asked.

Li Tai covered his forehead, Li Zheng called his father and brother?

This is not right, when did the father and brother match Li Zheng's brother?
Then what should I call Li Zheng?
If Li Zheng wants to marry Li Zhi, then the future generations will be messed up.

Li Tai held his forehead in pain and said, "This generation seems to be a bit messy, let the sons take care of it first."

Son?

Li Zheng pulled Li Tai aside and asked in a low voice, "What kind of minister?"

Li Tai also held on to Li Zheng, and said worriedly, "Li Zheng! What is your relationship with my royal father?"

"Your father!"

Li Zheng almost called out.

Li Shimin stepped forward and said, "What are you two whispering about?"

After stepping back again and again to keep a distance from Li Shimin, Li Zheng said, "I'm a little messed up now, please let me make sense."

Li Tai thought about it for a long time, and his expression seemed to be enlightened. He slapped his thigh and pointed at Li Zheng and said loudly: "Li Zheng! I understand, you and my father have already put incense, cut off the chicken's head, and become brothers, right! "

(End of this chapter)