The paper figure tied to the strings was like a little fire in the night, stirring Yuan Zixiong's heart fiercely, but no matter how hard he tried, he just couldn't catch this aura.

After a while, Yuan Zixiong finally sighed, hugged his fists at Xu Rui and said: "The old man is stupid, and I ask Brother Xu to give me advice, what is this resonance?" What is the connection with the Changxing Bridge case three years ago? ”

Xu Rui breathed a sigh of relief in his heart, he didn't expect that this Yuan Zixiong was polite on the surface, but on the inside, it was like a stone in a pit that was smelly and hard, but since he lowered his head, he wouldn't let you lift it up again.

Thinking of this, Xu Rui put the guqin in his hand on the table and said in a deep voice: "Does the Yuan family master know what the sound we heard?" ”

"Voice? Isn't a sound a sound? ”

Yuan Zixiong was a little puzzled.

Xu Rui shook his head and said, "Sound is actually an invisible wave, or a kind of vibration. ”

"Shock?!"

"Yes, different sounds vibrate with different frequencies, i.e. different rules."

As he spoke, Xu Rui plucked the strings lightly, and the little paper figure tied to the other string vibrated again, and when the vibration stopped, he plucked another string, but this time the little paper figure did not react.

"These are the different frequencies of sound?"

Yuan Zixiong looked at Xu Rui, as if he understood.

Xu Rui nodded calmly, and said: "Master Yuan, please recall, on the day of the acceptance of the Changxing Bridge, were there groups of forbidden troops walking across the bridge with neat steps?" ”

"Yes, it was a group of forbidden soldiers walking over the bridge, and then the bridge suddenly collapsed!"

A touch of sadness flashed on Yuan Zixiong's face, although three years have passed, the scene of that day is still vivid, as if it happened a moment ago.

Xu Rui nodded and said: "That's right, I dare to conclude that if a loaded carriage pressed up that day, the bridge would be absolutely safe, but it was this team of forbidden troops who stepped on the bridge!" ”

Yuan Zixiong's face changed: "Please teach Little Brother Xu, what is the reason for this?" ”

Xu Rui said: "The reason kid has already said, that is resonance!"

The sound is a wave, just like a wave, when a group of soldiers step on the bridge with neat steps, countless vibrations of the same frequency will gather together, like small waves, and finally gather into a monstrous wave, overturning the bridge! ”

"What? So that's how it was! ”

Yuan Zixiong looked at Xu Rui in amazement, his mouth open enough to put down an egg.

In fact, in another world, there are countless tragedies caused by resonance.

At the beginning of the nineteenth century, a group of Napoleon's soldiers trampled on the bridge of the city of Lyon in the same way.

In 1940, the 860-meter-long Tacomb Bridge in the United States collapsed due to resonances caused by high winds, even though the wind speed at that time was less than one-third of the design wind speed limit.

Until 2010, when human beings had carried out in-depth research on the resonance phenomenon and designed the bridge to prevent resonance, the Volga River Bridge in Russia still resonated, the bridge shook violently, and the bridge deck rolled in waves, almost being destroyed.

None of the sturdy steel-concrete bridges can resist the power of resonance, let alone the relatively simple Changxing Bridge?

Xu Rui sighed and said, "That's the reason, if the Yuan family master doesn't believe it, the kid can use the bridge model to do an experiment." ”

Yuan Zixiong laughed miserably: "No need, although it is the first time I have heard of resonance, but your explanation is clear, the old man has already roughly understood the principle, but I didn't expect it to be said that it was really the Yuan family's poor learning and harmed people's lives."

More than 200 lives, the entire national body of the Great Wei Dynasty, have been defeated at the hands of the old man, not wronged, never used, not wronged at all......"

Seeing that there was a deep despair in Yuan Zixiong's eyes, Xu Rui sighed, shook his head and said: "Actually, this can't be blamed on the Yuan family, resonance can be regarded as a natural disaster, roughly no different from a tsunami and earthquake, at least it's not a cutting corners as the holy decree says." ”

Hearing this, Yuan Zixiong's eyes suddenly lit up, and he suddenly looked at Xu Rui, rekindling hope.

"Lord Xu, would you like to ......?"

Xu Rui knew what he was going to say, and before he could finish speaking, he shook his head regretfully.

"Master Yuan, it is precisely because of this that this matter cannot be leaked out, the Holy Decree has already reached a conclusion on the Changxing Bridge case, if the resonance is thrown, wouldn't it be a slap in the face of the Holy Lord?

Therefore, the hundreds of officials who have been convicted and the thousands of people who have been implicated will immediately become ironclad evidence of the mediocrity of the saints! At that time, I am afraid that the Yuan family will not be used forever, but that it will never be recovered, and the fate of the Yuan family is already doomed......"

This sentence was like a sledgehammer, slamming on Yuan Zixiong's heart, smashing what little luck and dignity he had.

The old man, who was over sixty years old, seemed to have been drained of all his strength in an instant, and sat down in his chair in a dejected manner, the light of hope in his eyes quickly extinguished.

"Yes, the Yuan family is finished......"

In the middle of the night, Yuan Zixiong spit out a desperate sentence in his mouth, as if it was the lament of a lion before he died, and after a sentence, it was eternal silence.

"Master Yuan, the matter is not over yet, the Yuan family still has a chance to make a comeback, as long as you follow me out of the mountain......"

The so-called not breaking or standing, Xu Rui originally wanted to crush all Yuan Zixiong's pride first, and then strike while the iron was hot and give him new hope in despair.

But before Xu Rui finished speaking, Yuan Zixiong waved his hand and stood up in despair.

As he walked out, he muttered: "It's useless, never use it, the Yuan family can't climb this mountain, and there will be no day, the Yuan family ...... It was ruined by my hands......"

Xu Rui was stunned for a moment, he realized that he had underestimated the blow of despair to Yuan Zixiong, Yuan Zixiong was not only a great general, but also the head of the Yuan family, a family that had been inherited for hundreds of years.

"Yuan family master, Yuan family master!"

Xu Rui called Yuan Zixiong a few times in succession, but he seemed to ignore it, and still walked out with trembling steps.

"Yuan Zixiong!"

Xu Rui suddenly shouted loudly.

Yuan Zixiong's body trembled and turned his head, and his eyes, which were originally bursting with light, had become a little hollow.

Xu Rui's heart trembled, but he gritted his teeth and said loudly: "Yuan Zixiong, do you really want to let your heart demon destroy the entire Yuan family?" ”

Yuan Zixiong frowned and did not speak.

Xu Rui shouted again: "Yuan Zixiong, have you forgotten the original intention of a general? Have you forgotten the original purpose of your ancestors? Does the Yuan family, which has been inherited for hundreds of years, only care about glory and wealth? ”

"Boom!"

It was as if a thunderbolt exploded in Yuan Zixiong's brain, and his empty eyes gradually regained a bit of clarity.

Xu Rui continued: "The so-called craftsman, see the world with both hands, and change the world with both hands, what we want is not glory and wealth, let alone official positions, but to create a future that impresses the world!" ”

As soon as these words came out, Yuan Zixiong's eyes suddenly sharpened, and he stared at Xu Rui motionlessly.

Xu Rui suddenly laughed, as if the dark clouds had suddenly dispersed and the sun had returned.

He slowed down his tone and said, "Yuan Zixiong, do you want to fly into the blue sky with your creation one day?" ”

"What did you say?!"

Yuan Zixiong's pupils shrank suddenly, flying into the blue sky has always been the dream of human beings, no matter which world, no matter what race, it is a fatal temptation for a top craftsman like him.

Xu Rui ignored his stunned eyes and took out a model airplane from his baggage, which was the simplest model airplane.

The night before, Xu Rui used three wooden planks to build the fuselage, six small pieces of wood glued into a propeller, and finally replaced the rubber band with cow tendons to complete this simple "toy".

Under Yuan Zixiong's curious gaze, Xu Rui pressed the propeller and rotated continuously until the tendons tightened, and then threw it hard towards the door of the back hall.

The tendons bounce open, the propellers spin rapidly, and the aerodynamics of the propellers play a magical role as always, and the model airplane flies like an eagle out of the inner hall, over the fence and into the blue sky.

Outside the inner hall, An Ge and the children of the Yuan family were a little uneasy when they heard Xu Rui's history, but they saw a strange bird flying out.

Except for An Ge, everyone else was an expert in construction, and at a glance they saw that it was not a real bird, but a handmade creation, and they immediately stood on the spot with their mouths wide open.

Flying into the blue sky is the dream of every craftsman, or the highest goal, but he never thought that this thing could be realized in his hands, until he saw Xu Rui's model of the plane.

Although it was just a rough creation, and the flight distance was only 100 meters, it was like a spark that ignited his long-dormant ambition!

Xu Rui walked up to Yuan Zixiong, patted him lightly on the back, and said softly: "Come with me, let's explore this world together, change this world, create this world, and then you will find that the court is just a slightly larger well, and the vast world is for me to soar!" ”

Yuan Zixiong's heart was shocked, and he turned around and stared at Xu Rui intently, as if he wanted to see him in his heart.

Xu Rui looked at him calmly, without the slightest pretentiousness.

"Little Brother Xu is a young man with unique intelligence, compared to you, the old man is just the light of fireflies, how dare he compete with the sun and the moon? Mr. Dongli praised you as a saint, but the old man said that you are a saint, but there is one last question about the old man coming out of the mountain. ”

"The head of the Yuan family, but it doesn't hurt to say it."

Yuan Zixiong thought for a while and asked solemnly: "Little Brother Xu is young, and what he has learned is amazing, I don't know where he is taught?" Could it really be that the Nine Heavens Immortals couldn't descend to earth? ”

Xu Rui smiled dumbly, he had already thought of this question, and blurted it out without blinking at this moment.

"Don't hide it from the head of the Yuan family, the family teacher's name is Guiguzi!"

"It's really him!"

A hint of understanding flashed in Yuan Zixiong's eyes, and he suddenly knelt down towards Xu Rui after a moment of silence.

Xu Rui was stunned for a moment, and hurriedly stretched out his hand to help, but Yuan Zixiong's eyes were blazing and said: "All the people in the Ghost Valley are dragons and phoenixes, and I am fortunate to have met Yuan Zixiong for three lives."

Emperor Hongwei has cut off the road to the comeback of the Yuan family, but the Yuan family can not sink here, the old man is willing to take the Yuan family up and down, and serve the little brother Xu, and from then on the sword mountain and the sea of fire will never be lost! ”

"What? Your Yuan family wants to serve me as the master?! ”

Xu Rui was suddenly shocked, the world is the emperor's territory, if the Yuan family serves him as the master, he will not be killed by the emperor? !