Li Tai frowned and thought about it, the problem in front of him was indeed tricky.

The young people around were also racking their brains and thinking.

The Tubo man who made the question said: "It is said that His Majesty of the Tang Dynasty is respected as the Khan of the Heavens, but I didn't expect that the young people of the Tang Dynasty would not even be able to solve such a simple question." ”

"Don't you speak wildly!"

Someone immediately shouted.

The Tibetan man smiled and said, "The villain is just talking about the current situation. ”

"Then how do you say you want to measure it?"

"If the villain speaks out, what should you do?"

“……”

The Tibetans are jumping right in front of you and taunting you.

As long as the provocation is in place, the purpose of this Tibetan person will be achieved.

Of course there are those who are not convinced.

At this moment, there are more people who want to beat up this Tubo person.

But everyone is Sven in front of people, and I don't know how brutal people are.

Under the fierce folk customs of the Tang Dynasty, maybe tomorrow morning, someone will find this Tubo man covered in bruises, lying half-dead on Suzaku Street.

The good Zhongyuan Festival was stirred up by this Tubo people, and Yaxing was completely gone.

The onlookers exchanged heads and talked constantly.

Someone has already gone to ask for someone from the country's prison.

Zhang Yang looked at this Tubo man with interest.

Today's Li Shimin is respected as the Khan of Heaven, and it is when Li Shimin is complacent.

Li Shimin didn't know that in the west of the Tang Dynasty, there was a person named Songtsen Gampo who was also working hard.

And Xue Yantuo is also constantly doing things.

Tuyuhun was also eager to try.

There are so many hidden dangers at the border gates.

It's also thanks to Li Shimin's mallet that he can still eat well and sleep.

It won't be long before Songtsen Gampo begins to set his sights on the Central Plains, and he will take Tubo and Li Shimin to wrestle their wrists.

In addition, there is a plateau in Tibet, even if Li Shimin wants to send troops to attack Tibet, he can't avoid altitude sickness.

And Songtsen Gampo is not a good person, this person became the Zampu of Tibet at the age of thirteen.

In the past two years, there has been a constant war in Tubo, and Songtsen Gampo has been upgraded and accumulated experience for so long, and in another year, Tubo will be unified, and Songtsen Gampo's next target is the Tang Dynasty.

He is young and now he is the king of a country in Tibet, and he needs a battle to establish his authority.

It would be better to take Datang to Songtsen Gampi Liwei.

The military affairs are too complicated, what does it have to do with themselves?

Li Yue saw that there were more and more onlookers, and whispered to Zhang Yang, "Can you really know how tall this tree is without touching it?" ”

Zhang Yang sighed: "How do I know. ”

Frowning and looking at Zhang Yang, Li Yue said, "You must know." ”

After such a long time of understanding each other, Li Yue found that Zhang Yang had a very special skill.

No matter how difficult it is, it will be solved very easily in Zhang Yang's hands.

So much so that Li Yue was in a state of lying flat for a long time.

Life is dull and without worries.

"You don't say it."

Feel Li Yue's little hand tugging at the flesh on his arm.

This is powerful......

Zhang Yang said in a low voice: "Harder...... Yes, push harder. ”

“……”

"You!" Li Yue raised his small fist and smashed it on Zhang Yang's body like raindrops.

However, Li Yue has never learned how to scold, so she can only express her anger with her small fists.

Zhang Yang said in a low voice: "I only went to help them for the sake of your face, you have to think about it, even if I help them, I won't get any gratitude from these people." ”

As he spoke, Zhang Yang's gaze swept over the young people who were watching.

They will only satirize the arrogance of this Tibetan man after the puzzle is solved.

As for how the puzzle is solved, no one cares at all.

On weekdays, Zhang Yang avoids such things.

To make the little daughter-in-law unhappy is to make yourself unhappy.

Zhang Yang looked up at the evening sun.

Picked up a fairly straight stick from the ground.

It's easy to solve this problem, but it's a question at the elementary school math level.

The height of the tree can be obtained by finding a few known conditions.

It's also a matter of mindset.

Most of the scholars in the Tang Dynasty read Confucian classics, or the Book of Poetry, as well as some articles that have been circulated in the world.

There are not many people who specialize in mathematics.

After all, the first element of being an official is to write a good article.

Idleness to study obscure and brain-draining mathematics is a very thankless task.

Even if you have learned something, you can write a lot of algorithms.

A few more people could read it.

It's better to write a good article that everyone can understand, so that it can win the appreciation of others.

Between cost and efficiency, the ancients generally preferred to be liberal arts students.

Looking at this group of young people, Zhang Yang picked one and said, "This buddy, take a step to speak." ”

The young man looked at Zhang Yang curiously and said, "Do you dare to ask what's the matter?" ”

Zhang Yang whispered to him: "Actually, this puzzle can be solved. ”

"How?"

Zhang Yang stuck a wooden stick on the ground and said; "Now measure the length of this log."

The young man tried it with a measuring stick and said, "There are three in one foot!" ”

Zhang Yang said to him: "You can stick this stick on the edge of the tree later, remember to keep it in line with the tree, and don't deviate too much." ”

The young man nodded stunned, looking at Zhang Yang with a strange expression.

Zhang Yang marked the edge of the stick into the ground, and then said to him: "You measure the height of this stick, and when you stick it there, measure the height of the stick, and then measure the length of the shadow of the stick." ”

"Then you measure the shadow of the tree, do you know what I mean?"

The young man scratched his head and said, "I understand something, please make it clearer." ”

“……”

Zhang Yang glanced at Li Yue again.

Li Yue squinted and smiled. The heart said I knew you would, and the little face was full of pride.

The math level of the man in front of him was a little anxious.

I saw that the sun was about to set.

Zhang Yang said: "In the same horizontal position, when the reference object remains the same, the distance between the shadow and the shadow is the same, under the influence of the light, our shadow changes with the angle of the light, but the height of you and me will not change, when I stand side by side, is the length of the shadow the same at the same time." ”

The young man seemed to pat his head openly, "I kind of get it." ”

Zhang Yang took a stick and wrote a formula on the ground and said: "Calculate the height of the stick, and the length of the shadow of the stick, get the ratio of the two, and then measure the shadow of the tree, assuming that the height of the tree is A." ”

"The length of the shadow of the tree is calculated into the ratio of the two just now, and then we calculate it backwards, whether we can calculate the height of the tree, there will be some error, but it will not be too big."

"Yes, yes, yes...... That's it. ”

He almost jumped up in excitement, hurried into the crowd and shouted, "I know how to solve it." ”

Li Yue returned to Zhang Yang and said, "Do you think he can untie it?" ”

Zhang Yang said: "It should be possible." ”

Li Yue took Zhang Yang's hand and said, "Why don't you go by yourself?" ”

Zhang Yang snorted coldly and said, "To me, they are mortals, why should I show off how powerful I am in front of them." ”

Li Yue covered his mouth and chuckled, he is such a low-key person who lives in the limelight.

"Believe it or not, anyway."

After a while

The tree puzzle was solved.

Only then did everyone suddenly realize that some people said that this is actually not difficult.

The young man who solved the puzzle laughed from ear to ear as he listened to the compliments of the people around him.

"Okay, you Tubo! So that there is no one in your eyes! ”

"Dare to go wild here, really when we haven't learned math?"

"It turned out that it was just this kind of carving insect skill, and I thought it was so difficult."

……

As expected, they didn't care about how the problem was solved, they only thought about how to get back their previous face.

The Tubo man saw that he couldn't get off the stage at the moment, so he took out another piece of jade pendant and said: "These two pieces of jade are a pair, if you really have real talent and real learning, why not do a question again, I will give these two pieces of jade pendant to the person who solves the problem." ”

Li Tai's mind was still thinking about the process of solving the Tree Shadow puzzle.

The next thing, Zhang Yang didn't want to get involved anymore.

But he saw this Tibetan man walking straight in front of him.

Look at this guy's look of resentment.

Zhang Yang pretended that nothing had happened, turned around and was about to leave, your question is your business, and it has nothing to do with my answer.

As soon as he took two steps, the Tubo man stepped forward to stop Zhang Yang, and he said in an unfamiliar Guanzhong dialect: "This friend, you solved the question just now." ”

"Huh."

Zhang Yang snorted coldly and said, "It's not me." ”

The Tibetan man said again: "Just now, the villain clearly saw that it was you who told him how to solve the problem. ”

I saw that everyone was looking towards me. Zhang Yang found that he couldn't get off the stage for a while.

The buddy who had just solved the problem also stepped forward and said: "Brother, since you have solved a problem, it is better to solve another problem to frustrate the spirit of this Tubo person." ”

Is this trying to kill me?

To the men and women around are looking at themselves.

Zhang Yang looked behind him, Li Yue didn't know when he had already stood not far behind, and was looking at him expectantly.

What does the joy and anger of these people have to do with themselves?

Li Yue winked and stomped his feet again.

It seems that she wants me to fight this Tibetan man to the end.

Standing back up, Zhang Yang looked at the Tubo man and said, "Then you can solve the question." ”

For a time, this place became the focus of the entire Qujiang Pond.

The number of onlookers is increasing.

Zhang Yang said: "Can you hurry up with the question, I'm in a hurry." ”

In a hurry...... Could it be that the Central Plains person in front of him is underestimating himself?

The Tibetan people pondered for a while and said, "Once upon a time, there was a man from the Western Regions who could cut off a small piece of gold from a large square piece of gold, and the original shape of the gold remained unchanged. ”

The voice fell, and everyone who heard the question fell silent.

Someone passed on the topic by word of mouth, and it was already completely dark.

Zhang Yang killed a mosquito that did not know whether it was alive or dead, and elegantly flicked the corpse of the mosquito.

"You're done?"

The Tubo man bowed to Zhang Yang and said, "The villain is finished, please answer the question." ”

Zhang Yang made a block of mud on the ground and said, "For example, this is a gold nugget." ”

While speaking, Zhang Yang took out a wooden strip and cut a few lines on the square, and then reassembled the cut mud blocks.

Under the eyes of everyone, this square piece of mud was reorganized, and there was an extra piece in the lower left corner.

Zhang Yang cut off the extra piece and said, "That's the answer." ”

The Tibetan people wiped their sweat, this question is actually a story, a story that circulates in the Western Regions,

Zhang Yang took the wooden strip and cut it again, dividing the square into several pieces again, and cutting the square for the second time in the same way, another small square was added.

The original square is still square and has no change in shape.

The surroundings were quiet, and everyone's eyes were on the square that Zhang Yang was swinging.

The things in front of me are so magical, like witchcraft.

The original square block can have an extra piece, and the square is still the same as it was, and there is an extra piece out of thin air.