The key takeaway?

Song Qing's brain was running rapidly, and he analyzed it based on the experience of several previous failures and the success of this time.

The previous steps have not changed, the real change should be the last step: lightning strike!

What is the difference between this lightning strike and the last one?

A few slightly faint arcs flashed in his heart, Song Qing's body shook, and he said excitedly: "I understand, I understand." ”

"Xu Ningyan, you are really an amazing alchemy genius. ”

"Although you haven't seen our previous failures, you already know it in your heart, right, you already know the real reason for our failure. ”

No, I just know that your mind is gradually becoming distilled.... Xu Qi'an smiled and said nothing.

"What's the key?Senior Brother Song, what do you understand?"

"Senior Brother Song, hey, don't sell it, say it quickly, this alchemy is about to become my inner demon. ”

The white-clothed alchemists asked anxiously.

Song Qing coughed, looked around at the junior disciples, and said in a deep voice: "It's the intensity of the lightning strike." ”

After speaking, he looked at Xu Qi'an with a verifying gaze.

Xu Qi'an nodded with a smile and said, "I named it voltage." ”

The voltage of refining sodium metal should be controlled at 6-15 volts.

Voltage?!

Song Qing was stunned, it was another word he had never heard before, he knew electricity, but what is voltage?

Instinctively, he felt that this was a great point of knowledge, as profound as the nature of everything written in the blue book.

A white-clothed alchemist took a step forward and bowed his hand to Xu Qi'an: "Please tell Brother Tai clearly, what is voltage?"

"Teach us. The other white-clothed alchemists bowed their hands 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 gentleman and teaching apprentices the most. It's a pity that she is only a feng shui master and is not qualified to teach her disciples.

Voltage, also known as potential difference or potential difference, is a physical quantity that measures the energy difference between a unit charge in an electrostatic field due to different electric potentials....... Of course, you don't understand all of what I'm saying. Xu Qi'an coughed, his face serious:

"Electricity, like water, flows towards a low point. ”

Xu Qi'an raised the teacup and poured down the water inside, "It's okay for anyone to pour this cup on, but if it's a waterfall, people will be hit by the impact of the water, and even lose their lives." The same goes for electricity, which I call voltage. ”

He uses this easy-to-understand example to explain voltage.

The white-clothed men of Si Tianjian frowned and fell into deep thought, they didn't understand Xu Qi'an's words very well.

Although they are alchemists and both have the ability to manipulate thunder and lightning, this does not mean that they understand the nature of electricity.

Song Qing suddenly understood something, and said excitedly: "So, thunder and lightning will hit trees on rainy days, also because trees are at a low point? In addition, if it is only a weak current, we will feel paralyzed at most, and if we are bombarded by thunder, we will die. ”

"The truth is that the voltage of the heavenly thunder is so powerful that it is beyond the limits of mortals, like a waterfall. And a weak current is a glass of water, which can withstand it. ”

Hearing Song Qing's words, the white-clothed alchemists suddenly brightened, and they felt a sense of excitement to obtain the truth and meaning, and turned to Xu Qi'an with a verifying gaze.

Well, is this the principle? Isn't the principle of lightning striking trees the conductivity of rainwater? My middle school teacher didn't make it clear.... Xu Qi'an himself was not sure, with a smile on his face: "The child can be taught." ”

"Is this also written in that alchemy book?" asked a young man in white, his face full of curiosity.

"Yes, only I have read that alchemy book; The contents of the notes I sent to Si Tianjian are just a drop in the ocean. After a pause, Xu Qi'an said in a deep voice:

"That ancient alchemy book not only records knowledge, but also many unheard of alchemy. ”

Unheard of alchemy..... On the spot, everyone's breathing was a little heavier.

Xu Qi'an smiled and threw out a promise that made the white-clothed people boil: "I decided to share the alchemy cheats with Si Tianjian." ”

Wow!

Nearly twenty alchemists were boiling on the spot, excited.

"The blue book I gave to Si Tianjian is a thank you gift for saving me, guiding you to perfect the alchemy of fake silver refining, and teaching you the knowledge of voltage just now, it is not free. Xu Qi'an talked eloquently:

"Of course, it also includes the follow-up alchemy cheats. ”

"Never forget that the principle of alchemy is equivalent exchange!"

Song Qing nodded, agreed with what Xu Ningyan said, and asked on behalf of the juniors:

"How much silver do you want?"

"Vulgar!" Xu Qi'an said in a deep voice: "Alchemy can not be measured by silver." ”

The one who doesn't want money is the most expensive.... He silently added in his heart.

.......

Changle County Ya, partial hall.

Xu Lingyue held her sleeping young sister in her arms, pinched her handkerchief, sobbed and cried.

Looking at the little beauty with pear blossoms and rain, the fast hands of the fast shift are about to break their hearts. I didn't expect Xu Ningyan to have such a pretty and beautiful sister.

Even the king who has been to the teaching workshop has been amazed by the little beauty.

The atmosphere in the side hall was a little depressing, and the fast hands had ugly faces and wilted.

Wang Zhutou poured a cup of tea and put it in front of Xu Lingyue. This little beauty cried and cried for a long time, and the tears never stopped, and the woman was really made of water.

"Miss Xu, don't worry, Lord Baihu will find a way to rescue Ning Yan. ”

Other Kuaishou spoke comforting words and scolded Zhou Gongzi.

The eldest brother has a good relationship with his colleagues .... Xu Lingyue was a little surprised, the angry expressions of the fast hands did not seem to be fake.

As if seeing her surprise, Wang Zhutou smiled: "Ning Yan is a person worthy of respect. ”

Xu Lingyue was stunned, sobbed, and said softly: "Wang Zhutou, can you tell me about my eldest brother." ”

Wang Zhutou was silent for a moment, and unconsciously lowered his voice: "In fact, for people like us, how can there be anything clean under our hands?"

"If you don't do it to ordinary people, you can count it as a conscience, as for those rich businessmen, it's not a matter of course to get oil and water from them. ”

"But your eldest brother can't, whether it's a commoner or a rich businessman, he never blackmails. A while ago, considering that the Xu family was in great trouble, I decided to take him to make a fortune...."When Wang Zhutou said this, his expression was very strange, with embarrassment, shame, and admiration:

He smiled and agreed, and afterwards I gave him five cents of silver, but he quietly returned it to the family. ”

"If you want to say that he is sensible, don't you understand the truth that when the water is clear, there are no fish? But to say that he is not sensible, and he is very good at getting into trouble, and he has a good relationship with everyone, and he is slippery. So something happened to him, and everyone was uncomfortable. ”

Xu Lingyue listened stupidly, and the image of her eldest brother in her mind became tall, bright and majestic.

She has admired Xu Xinnian since she was a child, because everything is inferior and only reading is high, because her mother always instilled in her that her second brother is the only reading seed of the Xu family and the pillar of the future.

This kind of admiration reached its peak in the autumn of this year, after Xu Xin's New Year examination was lifted.

But in the ensuing tax and silver case, the whole family was imprisoned, and when they were desperate and helpless, the eldest brother opened up a way for the whole family to survive in a desperate situation.

Xu Lingyue refocused her attention on her eldest brother and became a little curious about him.

To this day, she knows how reliable this big brother is, just as she rescued them from prison in despair a month ago.

At that time, the feeling was certainly not as deep as this one.

The moment she saw the eldest brother saving her sister, Xu Lingyue felt that the image of the eldest brother was enough to be equal to the second brother.

At this moment, hearing Wang Zhutou's emotion, an image of a high wind and bright festival, with principles and a bottom line, emerged spontaneously, rising layer by layer, and had surpassed the second brother who had always been worshipped.

At this time, the light and shadow at the door of the side hall changed, and Xu Pingzhi and his son finally rushed back to Changle County, and saw their sister (daughter) who was safe and sound, and the father and son were relieved.

Xu Lingyue raised her head, burst into tears, and said in a mournful voice: "Dad, you have to save the eldest brother, if the eldest brother can't come back, the daughter won't live." ”