After knocking on this guqin for a while, Fang You still did not find any sounds of hollowness, which made him a little confused. Could it be that he had guessed wrong? It was not something hidden here, but the materials used during the repair of the Song Dynasty.

If there is something hidden in it, then he would really sigh at the sealing of this guqin.

Fang You did not give up. This guqin is so strange, it must be an extraordinary thing. Otherwise, an ordinary guqin would not be so weird at all.

After launching the escape technique, Fang You stared at the guqin and continued to knock on the body of the qin. The blue aura that flashed in front of him was still mixed with some yellow aura.

When some yellow spiritual energy is free, it merges with the green spiritual energy, turning into a green and yellow color like wheat that is about to mature, and looks very beautiful.

Fang You looked at these spiritual energy and sighed that this guqin must have experienced many hardships since the Spring and Autumn Period and the Warring States Period. If he could not discover the secrets in the guqin, he could only take them back to China and let the old men of Chu study together.

Even if it is really not a famous piano, the well-preserved Warring States guqin is an extremely precious national treasure-level cultural relic.

At this moment, Fang You's face moved slightly, his eyes staring at the green aura emerging from the guqin. When he was concentrating on these beautiful auras, he suddenly felt that the color concentration of the green aura was somewhat different.

It was not the intensity of spiritual energy, but the concentration of color. Fang You widened his eyes, observing each strand of free spiritual energy, and then comparing it.

Suddenly, he discovered the difference. Sure enough, the color of the green aura was somewhat different. Some of the green auras were obviously darker. Some of the green auras were slightly lighter.

Fang You has never discovered this phenomenon in other antiques. Some of them are just different colors, not the same color, and there are different concentrations.

Fang You looked at the guqin, but his face was a little eager to try. As he observed the guqin, it became more and more strange. There was yellow aura inside before. He couldn't find where to store it. He didn't expect that the next problem was discovered by himself before the problem was solved.

Different colors represent different ages. The difference between two different colors is hundreds of years away, while the difference in color concentration also represents the difference in time, but the time difference is not as big as the previous one.

These two types of green auras with different concentrations cannot be discovered without careful observation. This is also the reason why Fang You did not discover them before.

Based on his estimate of color concentration, the difference between these two green auras will not exceed one hundred years. Since this guqin was made in the Spring and Autumn Period and the Warring States Period, was it repaired in that era?

Fang You shook his head, threw some messy thoughts out of his mind, and then began to observe the whole of the guqin. He wanted to see where the different colors of the green aura came from.

At this time, Fang You did not complain that he had not obtained the Wood Escape Technique, because this was something he could not control. With Wood Escape Technique, he could naturally find the secret in the guqin very simply, but without the escape Technique, all he could do was to try hard to discover the secrets in it, relying on all the means he had now.

Gradually, he discovered two different positions of spiritual energy. The lighter green spiritual energy was freed from the front of the piano. This front was not the entire upper part of the guqin. If the guqin was divided into three parts, then the lighter color was freed from the upper part, while the remaining dark green airflow was freed from the middle and lower parts.

Fang You looked at these two different auras and different positions and fell into thinking. Since that's the case, the only thing he affirmed now was that the guitar surface was only combined with the guitar long after the guqin was made.

If the piano surface is broken, then you naturally have to replace the entire upper part of the guqin. Why are there two different green auras emerging on the upper part of the piano surface?

Moreover, Fang You discovered that those yellow spiritual energy appeared at the junction of these two green spiritual energy.

After thinking for a while, Fang You smiled slightly. As a result, his previous guesses had gradually become certain. There must be something hidden here. And judging from the thickness of the guqin, he could be sure that this was not the true face of the guqin he had determined before. Perhaps, the true face of the guqin was hidden inside.

When he was knocking just now, there was no hole. This made him amazed at the sealing technology of the guqin. What made him wonder was the yellow aura inside. Perhaps in the Song Dynasty, someone discovered the secret of this piano and put some things from that era into it. This is the only understandable explanation.

However, all of this is just speculation. Even if he was very sure before, what would the final result be, he would have to wait until he discovered the secret of the guqin to be truly confirmed.

Fang You looked at the location of the junction of the two spiritual energy, and then slowly studied the possible mechanisms in it on the entire guqin.

During this period, he inputted the gray airflow into it, and wanted to see if the guqin was like the Chengying Sword, and needed internal strength and other things to activate it.

Finally, there was no reaction, and there was no sound of the mechanism on the guqin. Fang You slowly closed his eyes, trying to attach his mind to the gray airflow, and then enter the zither to watch, just if he looked inward with Xie Shuyuan and Ye Yuqing's body.

However, his mind could not enter the guqin at all. Fang You couldn't help but smile as he looked at the guqin. He used to pick up the bargains on Taobao, even if he encountered some difficulties before, he could quickly solve them. Then he was smooth sailing, just like the Chengying Sword. He encountered some trouble when he opened the mechanism in the early stage, and then he opened the Chengying Sword with a gray airflow.

But now this guqin really stumped him. Fang You felt a sense of determination in his heart. He was not the kind of person who gave up when he encountered a little difficulty. Over the years, he had encountered many difficulties. Even if he had escape skills, he had encountered a life-and-death crisis. However, no matter how difficult it was, he did not give up.

Then, Fang You began to carefully observe every position of the guqin, from the Chengying Sword. He knew very clearly the magic of craftsmen in the Spring and Autumn Period and the Warring States Period, and could create mechanisms opened with true energy. Even when the true energy flowed in, blue light would appear. This was already a clever craftsman.

When it comes to mechanism techniques, only the most prosperous period in the Spring and Autumn Period and the Warring States Period, when there was Lu Ban, who was called the ancestor by later craftsmen.

Lu Ban is one of the most outstanding inventors in China. His contributions to ancient times are no less than those of Einstein in modern times.

Now, some of the tools used by craftsmen are invented by Lu Ban. The world's first nominal lock can be said to be invented by Lu Ban. It was previously created by locks. However, the earliest locks had no mechanism at all. They were just made into open shapes of ferocious animals such as tigers to scare away thieves.

Lu Ban installed a mechanism on the lock, so that it could only be opened with the corresponding key, so it replaced human guarding.

There are even historical records that Lu Ban invented a wooden bird that can fly in the air. In the Spring and Autumn Period and the Warring States Period, it was an era when countless outstanding talents emerged.

One of the ones comparable to Luban is Mozi, who was the founder of the Mo family. During the Spring and Autumn Period and the Warring States Period and the Pre-Qin Period, geometry, physics and optics were created as a set of theories that outstanding achievements were created.

It was called the exoteric school together with Confucianism. Among the controversies of hundreds of schools of thought at that time, it was the most influential existence with Confucianism and was known as neither Confucianism nor Mohism.

It can be said that in terms of achievements, Lu Ban and Mo Zi were comparable to each other, and were both the most outstanding craftsmen in the Spring and Autumn Period and the Warring States Period.

It can be seen from the mechanisms of Qin Shihuang's tomb and other ancient tombs that the magic of ancient mechanisms can be seen.

When he observed the Yueshan of the guqin, he suddenly discovered some suspicions that the Yueshan of the guqin is the most important part and the highest position in the guqin. Its main function is to set strings and the hardest position on the entire guqin.

Fang You found that Yueshan could sway gently with a little force, but this sway was not obvious, and the force used was slightly weaker. Then these Yueshan made of hardwood remained motionless.

When the Song Dynasty guqin used by Si Ren from the Ministry of War to auction the French treasures of the Little Island Country, he could study it for a long time under the explanation of Mr. Chu. Yueshan is an important position for strings. When strings are played, it can be said to be the most stress-bearing part of the entire guitar body.

No matter how the Yueshan on the Song Dynasty guqin shaking, it will not move at all. If there is a slight shaking, the entire sound will change. Therefore, in ancient times, I only heard of playing the strings of the piano, and I have never heard of playing the Yueshan.

However, if anyone gets this guqin, I am afraid that the force used when playing the guqin will be very gentle. This force will not cause the Yueshan on the guqin to shake at all.

Is this Yueshan shaking because of its long history and a bit dilapidated? Or is the seven Yueshan used to set strings that are the mechanisms in the guqin?

If there was no yellow spiritual energy inside and the two different green spiritual energy, Fang You would not have thought that this guqin had a secret existence, but the existence of these two spiritual energy shows the strangeness and mystery of this guqin.

Fang You carefully pinched the first Yueshan, then swayed a few times with a little force, and then shook the seven Yueshans one by one, but the guqin still did not change at all.

Looking at the guqin, Fang You smiled helplessly. Even if he took it back, how could he tell Mr. Chu? He said that he thought there was a secret in the guqin and needed to study it. That would be too much of a meaning that there was no silver here.

Thinking of his constant Taobao pick-up, Mr. Chu said that Fang You was not worried, but was just worried that the rest of the people would have some unnecessary speculations.

If there is no spiritual energy, with his observation, he would not think that this guqin has a secret existence. If he is sure that there is something hidden inside, he cannot find the mechanism at all. Ordinary people may think that this is a guqin without secrets. With such obvious doubts, many people can have some doubts about him.

Fang You looked at Yueshan. Yueshan was very hard and could be preserved until now. It should not be a wavering with time. Then, there is a very likely mechanism on it.

Seeing Fang You keep observing the guqin, shaking some places from time to time, Matsumoto Akidao and others were completely dizzy and didn't understand what Fang You were doing.

I just said that this guqin is a treasure, but at this time I was groping back and forth on the guqin without any scruples.

But Akira Matsumoto and others did not disturb Fang You at all. They just watched them carefully from the side.

Fang You discovered the treasure's ability, and they were very impressed. They discovered a three-legged golden crow made of precious Loulan Desert Jade in the small island country. They also discovered the Qinan agarwood that had not been discovered by Siren of the Martial Arts Department. In the end, they obtained two national treasures from the small island country.

Fang You was still groping. Finally, he couldn't help but shake his head, remembering some of the experiences of opening the Chengying Sword before, and opening the Chengying Sword. It was also because he suddenly appeared at the black market auction, because the golden escape technique suddenly appeared, so he saw the bronze sword full of copper rust. Hence he saw the hidden sword inside.

He had never seen through this guqin before, but through spiritual energy, he knew that there might be secrets inside. He couldn't help but sigh. Chengying Sword requires the internal strength of a warrior to open it. It would be great if this guqin also needed internal strength.

Suddenly, thinking about the sentence in his mind just now, Fang You suddenly came to his senses and kept thinking about it, sword, internal strength, guqin...

The sword is a weapon, which complements the internal strength of the warrior. The guqin represents the brilliant culture and art, and is naturally different from the sword that is the main martial arts. So the mechanism on the Chengying Sword needs to be opened with the internal strength of the warrior. Could it be that the guqin requires the breath of a literati to open?

Did hundreds of scholars spray up in one breath? Fang You fell into imagination. Looking at Yueshan used to stalk, and then thinking about the shaking of Yueshan before and the wonderful ancient mechanisms, his expression changed. The mechanism of the guqin shouldn't have to play the piano to open it.

The idea that flashed in my mind made Fang You a little incredible. Anyone who heard such an idea would feel very absurd.

But Fang You knew that the mechanism on the Chengying Sword was not the same incredible to everyone. The invisible and shadowlessness of the Chengying Sword is the same. Then, it is not surprising that this mechanism that requires playing the piano to open is compared with the magic of the Chengying Sword.

"Matsumoto, please buy seven strings. Yes, no, buy double, fourteen, and the best and most durable." Since I had this idea, how could it work without experimenting, Fang You immediately came to his senses and said to Akidao Matsumoto on the side.

"Mr. Li, please wait, I will be back soon." Akidao Matsumoto nodded, and without asking about the use of Fang You in purchasing strings, he stood up from the sofa and walked out the door.

Looking at the doubts on the remaining people, Fang You shook his head and smiled. There was no result now. He really could not explain some of his discoveries to these people. Even if he said it, these people would not believe it. Only by using the real result can we explain everything and make all the previous incredibles truly become reality.

"How far is the nearest piano store?" After waiting for about ten minutes, Fang You couldn't help but reply to the people on the sofa.

One of them replied respectfully: "Mr. Li, the nearest piano store is not far away. However, according to your requirements, the store with good string quality is a bit far away. The strings produced by our small island country Todo Tobaya Co., Ltd. are silk strings for guqin. They are of good quality and have no strings. However, looking at the current time, Matsumoto should be back soon."

Fang You nodded. He was not unfamiliar with Toobaya, but had some impression. When he was studying the Song Dynasty guqin, he had heard Mr. Chu explain that the Song Dynasty guqin brought by Si Ren from the Martial Arts Department had strings on it. At that time, Mr. Chu just touched it with his hand and said that it was the silk string of Toobaya, a small island country. However, compared with the silk strings produced in China, it was tougher but not strong enough.

As the birthplace of the guqin culture, there are naturally many shops that produce guqins, including strings. The most famous of them is the ancient silk string. Compared with Toobaya, the small island country, the ancient silk strings are famous at home and abroad and are deeply popular among some guqin lovers.

Afterwards, Mr. Chu found a few ancient silk strings, and played the same song as the silk strings of Toobaya. With Fang You's keen feeling, it was naturally clear that the differences between the two strings were distinguished.

However, the famous guqin celebrity who specializes in producing ancient silk strings is now old and no longer makes strings. If you want ancient silk strings, you can only purchase them from others, or see if some piano stores have inventory.

In a small island country, it is not as good as in China. It is quite good to use silk strings that can be used in Toobaya. Moreover, this time it is just to discover the secrets in the guqin, not to play them specifically.

During the period when I got the guqin in the Song Dynasty, Fang You didn’t just follow Mr. Chu to study the guqin, but also started playing it for a while.

With his super learning ability, he quickly mastered the key points of playing the guqin, and his control and grasping ability was much stronger than that of ordinary people. In addition, his peaceful state of mind and the tone played were very wonderful, and almost even Mr. Chu and other old men were addicted to it.

Of course, in the end, I had to sigh at Fang You's learning ability. In their opinion, even a piano player who has been learning piano for decades may not necessarily be fascinating to Fang You.

The experience of following Mr. Chu to learn the piano was also the confidence that Fang You directly asked Akira Matsumoto to find the strings when he discovered Yueshan's secret, and wanted to experiment.

If there was no such experience and just relying on random shooting, Fang You felt that this mechanism would not be activated at all, unless it was just a blind cat who encountered a dead mouse.
Chapter completed!