Dreaming about the world, embarking on the path of spiritual practice

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There are two ways to produce crystals. One is to collect them from natural mineral veins, and the other is to refine them through special secret techniques.

Compared with collecting from natural mineral veins, the refining of secret techniques takes a long time and has low yield. Generally, monks who need special crystal stones will specially refine them.

Therefore, the crystal stones in circulation basically come from the collection of mineral veins.

Yu Liang investigated in Shengyan City and learned that low-grade crystals can also be purchased in exchange for gold. A low-grade crystal costs about one thousand taels of gold.

Compared with crystals, gold is easy to obtain. Although he doesn't have it yet, he can earn this thousand taels of gold with just a little skill.

As long as you give Yu Liang a piece of crystal, he can turn it into two pieces, two pieces into four pieces, four pieces into eight pieces, and so on.

After spending three days preparing some things, he walked into the Wanbao Pavilion that he entered when he first arrived in Holy Flame City.

When the boss saw him arriving, although he remembered the unpleasant incident last time, he still greeted him with a smile and said, "Sir, what would you like to order?"

Yu Liang opened his palm, revealing the 'flash bomb' he had unexpectedly obtained before, and asked, "Do you want to keep this?"

The boss of Wanbao Pavilion pinched it and checked it, and then said: "Although this gadget is very powerful and can be compared with some low-level magic weapons, it is only a mortal thing after all. If you want to sell it to me, Wanbao Pavilion, I will I can only offer fifty taels of gold."

After hearing fifty taels of gold, Yu Liang immediately said: "Sell it!"

After that, he took out a cloth bag and said: "There are twenty here. Even if they are one thousand taels of gold, you can get me a low-grade thunder crystal stone."

The boss didn't react to this situation for a moment. He was stunned for a moment before taking the bag sent by Yu Liang and checking that there were exactly twenty items inside.

"Sir, please wait a moment!"

He walked to the counter with the bag in hand, put it down, and then took out a piece of low-grade Thunder Crystal.

Yu Liang took the low-grade thunder crystal stone from the other party and put it in his palm to observe. It was completely transparent and had a hexagonal prism shape with symmetrical pyramids at both ends.

"Thank you very much!"

After harvesting a piece of low-grade Thunder Crystal, Yu Liang left Wanbao Pavilion with a smile.

Yu Liang plans to use this piece of low-grade thunder crystal to refine a magical weapon, and then resell it to earn at least nine pieces of low-grade crystal.

Yu Liang had already thought of the musical instrument he was going to make. He created a piano-like sonic instrument called Fubo Qin based on its principles.

What is used is the piezoelectric effect of thunder crystals and the propagation characteristics of sound waves. These two are interrelated physical phenomena.

The piezoelectric effect is a physical phenomenon in which a potential difference occurs when a crystal is subjected to pressure or tensile force.

This phenomenon is due to changes in the vibration mode of atoms or molecules inside the crystal, resulting in uneven distribution of charges, resulting in a potential difference.

This effect has been widely used in modern fields such as electroacoustic devices and piezoelectric sensors.

The propagation characteristics of sound waves refer to the various properties displayed by sound waves when they propagate in media, such as sound speed, wavelength, frequency, etc. These properties are affected by various factors such as medium density, elastic modulus, thermal conductivity, etc.

In crystals with piezoelectric properties, due to the piezoelectric effect of the crystal, the propagation speed and wavelength of sound waves will change, which further affects the propagation characteristics and vibration modes of sound waves.

Since they are all physical phenomena, there is no need to process the thunder crystal. As long as it is set in the 'Fubo Qin' with a special structure, it can generate and amplify sound vibrations.

By strumming the strings, sound waves of different frequencies are released. These sound waves not only have a healing effect, but can also cause damage or interference to enemies.

It took five days.

Yu Liang completed the production of the 'Fubo Qin' instrument, and then took it to Wanbao Pavilion again.

"Sir, what would you like to order?"

Looking at the boss who came up to him with a smile, Yu Liang placed the 'Fubo Qin' in front of him: "Boss, how about taking a look at this magical weapon?"

Seeing that Yu Liang was here to sell magic weapons, the owner of Wanbao Pavilion first observed them carefully, and then said with a smile: "Sir, please wait a moment, let me let the weapon refiner in the store come and evaluate it."

Yu Liang nodded.

After a while, the other party called a middle-aged weapon refiner and began to test and identify the Fubo Qin.

Stretch out a finger and lightly pluck the strings. The vibration of the strings triggers the internal mechanical device to act on the thunder crystal, instantly amplifying the tiny sound of the piano ten times to form a sound wave impact!

"Yes, Not Bad!"

Seeing this, the middle-aged weapon refiner nodded with satisfaction, turned to the boss and said: "A very good low-level musical instrument, you can accept it!"

Then, he asked Yu Liang: "Is this made by you?"

Yu Liang nodded.

"Did you name it?"

"Fuboqin."

Fu Boqin, after hearing the answer, the other party whispered it in his mouth. When the middle-aged weapon refiner wanted to communicate with Yu Liang, the boss suddenly interrupted him with a smile and asked him to go about his own business.

Then discuss the price with Yu Liang.

"Sir, how many crystal stones do you want to sell?"

"Boss, how much do you think of?" Hearing the other party's question, Yu Liang returned the question to him.

The other party smiled, stretched out his finger and gestured: "Nine low-grade crystal stones."

Hearing the quoted price, Yu Liang shook his head slightly. This was still a little short of the psychological minimum price he had arrived at after conducting research in the Holy Flame City.

"Eleven low-grade crystal stones!"

Hearing Yu Liang's asking price, the other party also shook his head: "No, it's too high. I have no profit at all at this price. I can only sell nine pieces of low-grade crystal stones."

After Yu Liang argued with him for a long time, the other party finally agreed to accept Fubo Qin with ten low-grade crystal stones, which happened to be Yu Liang's lowest price.

After earning ten crystal stones, Yu Liang left Wanbao Pavilion with a smile.

It’s really a skill that comes to you, so you don’t have to worry about eating and drinking!

After looking at the ten crystal stones he earned in his hand and sighing with emotion for a while, Yu Liang continued to devote himself to the business of refining magic weapons.

Ten crystals are not enough for him. The simplest secret technique requires a hundred crystals, let alone those precious secrets.

Therefore, Yu Liang wanted to roll these ten crystals and let them change more and more.

The magic weapon he wants to refine next has already been thought of.

Phantom mirror: utilizes refraction and diffraction in optical principles. When light passes through media of different densities, refraction occurs, that is, the light changes direction and continues to propagate. Diffraction is the phenomenon of light waves scattering at the edges of obstacles or holes, allowing light waves to continue to propagate around obstacles.

In the phantom mirror, crystals refract and diffract light to form fantastic images, thereby achieving a psychedelic effect.

For the phantom mirror, Yu Liang also equipped him with a phantom bell.

The phantom mirror and the phantom sound bell are combined into a set. Not only is the power greatly enhanced, but the price can also be doubled several times.

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