Equivalent exchange Song Qing's mind was like a bolt of lightning, and his soul seemed to have been hit by something.

This kind of impact is like the impact of ancient poems on readers.

Equivalent exchange is an unchanging principle of alchemy!

"Yes, that's right, that's it" Song Qing whispered to herself.

Whenever he successfully refines something, the raw materials will disappear or be transformed into something else.

This phenomenon has always existed, but few people will notice it. Or they may notice it, but they don’t think too much about it, or think about it so deeply.

"When the teacher taught us alchemy, he once said that the essence of alchemy is not "change", but transformation!"

"Exchange of equal value, this is what it means."

This succinct sentence made this alchemy fanatic shudder.

After calming down his excitement, Song Qing began to think about the meaning of the words "Edward Elric".

Is it a name?

Such a strange name.

Is it a secret code, or some kind of secret word in the field of alchemy?

I couldn't figure it out, and I felt itchy for a while.

Song Qing took a deep breath, calmed down her emotions, couldn't wait to turn to the next page, and read the distorted and ugly fonts professionally and patiently.

The first sentence at the beginning is: Enter the world of alchemy!

Is this teaching people to enter the realm of alchemy?

How arrogant! Song Qing said in her heart.

Alchemy has always been taught by words and deeds, word of mouth. A person with a bright talent can learn it in a year and a half, while a person with a dull talent can accomplish nothing in thirty to fifty years.

Si Tianjian still does not have a set of serious textbooks.

However, the sentence in the preface gave Song Qing enough patience.

"Section 1: Changes and properties of matter. There are many examples in nature that are invisible to the naked eye. These examples constitute matter. There are many interactions between matter, and changes are constantly taking place."

"I would classify this change as: chemical change and physical change"

Song Qing looked at it and fell into deep thought.

What is chemistry.

What are atoms.

What am I looking at.

Why do I know every word, but when they are combined, I can't understand them?

There are also collections of annotations for the saint’s classics. Why is there nothing when I get to you?!

However, Song Qing did not gain nothing. He was keenly aware that this was a heavenly book that was unparalleled in the world.

It explains the true face of the world and points out the most essential structure of everything in the world.

Song Qing's body trembled slightly, and for a moment, he wanted to tear up the book. This is a mystery that only gods can know, and mortals should not pry into it.

But deep down in his heart, there was another force supporting him, which was the most primitive human desire for knowledge.

There was silence in the alchemy room.

The people in white clothes looked at each other, not daring to disturb him, and were deeply worried about Senior Brother Song Qing's unpredictable expression.

"Senior brother is thinking about some unacceptable alchemy again."

"Yes, last year he tried to turn a cat's flesh into a tree so that it could grow back even if his head was cut off, but he was imprisoned by Mr. Jianzheng for a month."

Song Qing was immersed in his own world, fearful and excited at the same time. As he watched, his eyes suddenly lit up because he saw a detailed explanation of alchemy on how to refine tax silver.

Step 1: The first step is to filter the brine and purify sodium chloride (refined salt).

Step 2: Evaporate the brine to dryness, precipitate the crystals, and melt them at a high temperature of 800 degrees Celsius.

Step 3: Pay attention! This step is the key to refining tax silver. Whether it is successful or not depends here.

Both sides of Song Qing were working hard, finally, finally solving the problem that had troubled him and his junior brothers for a long time.

This is truly a divine book.

Song Qing realized that he had reached the end of the page. He drooled on his fingertips and couldn't wait to turn to the next page.

Blank!

Song Qing: "???"

there is none left?!

There is no more behind?

What is the third step? Why is it not recorded? Who wrote this book? This kind of fragmentary writing will be cut into pieces.

Song Qing spat out a mouthful of old blood.

Song Qing opened his mouth, forgot something, and said in a deep voice: "Who sent this book?"

"Did not notice."

"Didn't listen."

"forget."

The answers from the junior fellow students were extremely true.

Song Qing immediately went downstairs, found the disciple who had received Wang Captou before, and asked about the incident in detail.

This is the conclusion Song Qing came to after analyzing the exchange.

"Senior brother, what's wrong with you?" The junior brothers in white chased him downstairs.

"What's wrong with this book?"

Song Qing's face was unparalleledly serious, and he glanced at everyone's faces, "Junior brothers, listen to me. This is an opportunity for Si Tianjian to rise rapidly. It is a once-in-a-lifetime opportunity. Alchemy may usher in unprecedented glory."

Sheep Pavilion.

Two carriages drove slowly down the official road, and they were occupied by two great scholars who had just finished breathing fragrance.

Xu Xinyin and a group of classmates were riding horses and fell behind the carriage.

"I shouldn't have told the truth just now." Xu New Year said with some regret.

The two great scholars were quarreling with each other and were about to fight. Xu Xinnian said bluntly: In fact, the teacher and Mr. Mubai just wanted to get a poem handed down from generation to generation.

The scene had been very embarrassing.

Although the two great scholars were prevented from fighting, Xu Xinyin also realized that telling the truth was wrong.

"Mom is right, I have never been able to speak, I have to change it!" Xu Xinnian was introspecting for the nth time in his life.

He stretched out his hand and touched the warm jade pendant. Xu New Year looked into the distance happily. Just as he was feeling happy, a galloping figure appeared in his sight.

After a while, the silhouette of the figure came into view. It was his father Xu Pingzhi.

Xu New Year was stunned for a moment, then he clamped his horse's belly and passed the carriage to meet him.

"Dad, why are you here?" After saying this, Xu New Year's heart sank. His father's face made him realize that something was very bad, even though he knew nothing about it.

Xu Pingzhi informed Xu New Year of the matter as quickly as possible.

Zhou Shilang's son molested his sister in the street and almost trampled his brother to death. He was then taken to the Criminal Department. Xu Xinzhen's head became hot and his blood surged.

"Nian'er, your eldest brother's life or death depends on you."

"Dad, don't worry." Many thoughts flashed through Xu Xinnian's mind, and he soon came up with an idea. He turned the horse's head, forced the carriage to stop, and said loudly: "Teacher, Mr. Mubai, I have something to ask for."

The curtain opened, and Zhang Shen and Li Mubai poked their heads out, "What's the matter?"

"My brother is in trouble, please ask the teacher and Mr. Mubai to help." Xu Xinnian repeated what his father had told him.

Zhang Shen stared at him and said in a deep voice: "Is he the talented man who wrote "Don't worry about the road ahead without friends, and no one in the world will know you"?"

His voice was serious and serious, as if this was important.

"Exactly!" Xu New Year nodded.

Just as Zhang Shen was about to speak, Li Mubai in the carriage next to him interrupted: "Cijiu, leave your brother's affairs to me. You and your teacher go back to the academy first."

"Hmph!" Zhang Shen snorted coldly: "I'm waiting for you, so don't bother me. I'll take care of my students' affairs."

Xu Pingzhi was overjoyed. He didn't expect his son's reputation to be so great.

"Teacher, Mr. Mu Bai, my brother has been taken to the Criminal Department. Please go quickly, otherwise something may happen." Xu Xinnian said urgently.

Stop bickering at this time.

ps: First, the name "Star-Zhailing Tower" in the previous chapter was written incorrectly. It was "Star-Observing Tower", which has been changed.

Second, in the chapter of Sheep Pavilion and the song "Bie Dong Da", it is a seven-character quatrain with only two couplets. Seven-character is a kind of Qilu, but Qilu is a four-couplet. The previous ones will not be changed, but I will make a patch here.
Chapter completed!