The key point?
Song Qing's brain spun rapidly, combining his previous failures with this success, he started to analyze the situation.
The previous steps had not changed, but the real change should be the last step: Lightning strike!
What was the difference between this lightning strike and the last time?
A few slightly faint electric arcs flashed in his mind. Song Qing's body shook, and he said excitedly, "I understand, I understand.
"Xu Ningyan, you are really a great alchemy genius.
"Although you didn't see our previous failures, you already knew it, right? You already knew the real reason why we failed."
"No, I only know that your mind is gradually enlightened …" Xu Qi 'an smiled and said nothing.
"What is the key point? Brother Song, what do you understand? "
"Brother Song, don't keep me guessing. Tell me quickly. This alchemy is becoming my inner demon."
The alchemists in white asked anxiously.
Song Qing coughed, looked around, and said in a deep voice, "It is the intensity of the lightning strike."
After that, he looked at Xu Qi 'an with eyes seeking confirmation.
Xu Qi 'an nodded with a smile and said, "I named it voltage."
The voltage of refining sodium metal should be controlled at 6 to 15 volts.
Voltage?!
Song Qing was stunned. It was another word he had never heard before. He knew about electricity, but what was voltage?
Instinctively, he felt that this was an incredible point of knowledge, as profound as the essence of all things written in the blue book.
An alchemist in white stepped forward and bowed to Xu Qi 'an, "Brother, please tell me, what is voltage?"
"Please teach us." The other alchemists in white bowed at the same time and said in unison.
Chu Caiwei, who was standing on the side, was envious. She liked the feeling of being a teacher and teaching apprentices. Unfortunately, she was only a Feng Shui master and was not qualified to teach apprentices.
Voltage, also known as potential difference or potential difference, is a physical quantity that measures the energy difference of a unit charge in an electrostatic field due to different potentials … Of course, you will not understand all of this. Xu Qi'an coughed and looked serious.
"Electricity is the same as water. It will flow towards the lowest point."
Xu Qi'an raised the teacup and poured the water out. "It doesn't matter who this cup falls on, but if it's a waterfall, the impact of the water will break your bones, and you might even lose your life. The same is true for electricity. I call this phenomenon voltage. "
He explained voltage in such an easy example.
The white robes of the Celestial Commissioner frowned and fell into deep thought. They did not understand Xu Qi'an's words very well.
Although they were alchemists and had the ability to manipulate lightning, it did not mean that they understood the nature of electricity.
Song Qing suddenly understood something and said excitedly, "So, the reason why lightning strikes trees on rainy days is because the trees are at a low point? It was the same with hitting a person. In addition, if it's just a weak electric current, we'll feel numb at most, but if we're struck by the Heavenly Thunder, we'll die.
"The truth is that the Heavenly Thunder's voltage is so strong that it exceeds the limits of what mortals can bear. It is like a waterfall. And the weak electric current is like a glass of water, which can be withstood. "
Hearing Song Qing's words, the white robes alchemists were suddenly enlightened. They felt excited as if they had obtained the truth, and they looked at Xu Qi'an for confirmation.
Uh, is this the reason? Isn't the reason why the trees are struck by lightning because of the conductivity of rainwater? My high school teacher did not explain it clearly … Xu Qi'an was not sure himself, but he smiled and said, "You're worth teaching."
"Is this also written in the alchemy secret book?" A young man in white asked, his face full of curiosity.
"Yes, only I have read and studied that alchemy secret book. The content of the notes I sent to you from the Celestial Commissioner is just a drop in the ocean. "After a pause, Xu Qi'an said in a deep voice,
"That alchemy ancient book not only records knowledge, but also many alchemy skills that have never been heard of."
Alchemy skills that have never been heard of … Everyone breathed heavily on the spot.
Xu Qi'an smiled and threw out a promise that made the white robes excited, "I have decided to share the alchemy secret book with the Celestial Commissioner."
Wow!
Nearly twenty alchemists were excited on the spot.
"The blue-covered book I gave to the Imperial Astronomer was a thank you gift for saving me. It taught you how to perfect the alchemy technique of making fake silver, as well as the knowledge I just taught you about voltage. It was not free," Xu Qi 'an said confidently.
"Of course, it also includes the following alchemy secret books.
"Never forget that the principle of alchemy is equivalent exchange!"
Song Qing nodded, agreeing with what Xu Ningyan said. He asked on behalf of his junior brothers,
"How much silver do you want?"
"Vulgar!" Xu Qi'an said in a deep voice, "Alchemy is not something that can be measured with silver."
"What doesn't cost money is the most expensive …" He added silently in his heart.
…
In the side hall of the government office of Changle County.
Xu Lingyue held her sleeping younger sister in her arms, holding a handkerchief and sobbing.
Looking at the tear-stained beauty, the fast hands of the fast class felt their hearts break. They didn't expect Xu Ningyan to have such a beautiful sister.
Even Arrester Wang, who had been to the Musical House, was stunned by the little beauty.
The atmosphere in the side hall was a little depressing. The fast hands looked gloomy and listless.
Arrester Wang poured a cup of tea and placed it in front of Xu Lingyue. The little beauty cried for a long time and her tears never stopped. Women were really made of water.
"Miss Xu, don't worry. The official will find a way to save Ning Yan."
The other fast hands comforted her and scolded Young Master Zhou.
"Big brother has a good relationship with his colleagues …" Xu Lingyue was a little surprised. The angry expressions of the fast hands didn't seem fake.
As if seeing her surprise, Arrester Wang smiled and said, "Ning Yan is a man worthy of respect."
Respect? Xu Lingyue was stunned. She sobbed and said softly, "Arrester Wang, can you tell me about my big brother?"
Arrester Wang was silent for a moment and unconsciously lowered his voice, "Actually, for people like us, how can we have clean hands?
"It's good enough that we don't make a move on ordinary people. As for those rich merchants, isn't it natural to fish for money from them?
"But your big brother won't. Whether it's the commoners or the rich merchants, he never extorted or blackmailed. A while ago, considering that the Xu family was in trouble, I decided to help him make a fortune … "When Arrester Wang said this, his expression became strange. There was awkwardness, shame, and admiration.
"He agreed with a smile. After that, I gave him five taels of silver, but he secretly returned it to me.
"If you say he's sensible, doesn't he understand the principle that if the water is too clear, there will be no fish? But if you say he's not sensible, he's very good at doing things. He has a good relationship with everyone, and he's very slippery. So when something happened to him, everyone felt bad. "
Xu Lingyue listened in a daze. In her mind, her big brother's image became tall, bright, and great.
She had admired Xu Xinnian since she was a child, because of all the inferior qualities, but studying was the best. Because her mother always instilled in her that her second brother was the only scholar in the Xu family, and the future pillar of the family.
This kind of admiration reached its peak when Xu Xinnian passed the imperial examination this year.
But then came the tax case, and the whole family went to jail. When they were desperate and helpless, her big brother opened a way for the whole family to survive.
Xu Lingyue turned her attention to her big brother again, and became a little curious about him.
It was not until today that she realized how reliable her big brother was, just like a month ago when he rescued them from the prison when they were in despair.
But at that time, the feeling was definitely not as deep as it was now.
The moment she saw her big brother save her sister, in Xu Lingyue's mind, her big brother's image was equal to her second brother's.
At this moment, when she heard Arrester Wang's sigh, an image of noble character and unquestionable integrity, with principles and a bottom line spontaneously emerged in her mind. It was elevated layer by layer, and had already surpassed her second brother, whom she had always admired.
At this moment, the light and shadow at the door of the side hall changed. Xu Pingzhi and his son finally rushed back to the Changle County Yamen. Seeing that their sister (or daughter) was safe and sound, the father and son were relieved.
Xu Lingyue raised her head, tears streaming down her face, and said in a sorrowful voice, "Father, you have to save my big brother. If he doesn't come back, I don't want to live."
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