Chemistry originates from people's life and production practices, and continues to develop with the progress of human society. Although modern chemistry only began to emerge in the 18th century, the historical origin of chemistry is very ancient, clay to make pottery, ore to burn metal, grain wine, silk and linen dyeing, all belong to the earliest chemical processes.

It's just that in ancient times, chemistry was replaced by alchemy as a mystical discipline.

But even if it is extremely mysterious, if you want to summarize the core, you only need a simple formula - A+B=C.

This is not only to say that the basic principle of chemistry is that substance A plus substance B will produce substance C, but also to say that conservation in chemistry is a principle of equivalent substitution.

"Equivalent Replacement ......"

Four simple words made this alchemy master, a fanatic lover of alchemy, unable to help but tremble.

He couldn't help but think of what the teacher taught him when he had just entered the alchemy gate and studied alchemy: although alchemy is magical, its essence is not transformation, but transformation.

Yi Ling muttered in his heart, looked at the chemical equipment on his desk again, and fell into deep thought.

Ye Feng walked up to him, squinted at him, and smiled: "This is where the top alchemists gather, as the head of alchemy, don't you know what the problem is?" ”

"Where?" Yiling asked subconsciously.

"Temperature."

"Temperature?" Yiling was shocked.

His brain was racing, and he had the experience of thousands of failures, and he could already guess that it was the temperature, but what should the temperature be?

"So......" Yiling could no longer hide the excitement in his heart, and cast an expectant gaze at Ye Feng.

This time, it was Ye Feng's turn to be tsundere.

He walked straight to the chair behind the table and sat down, stilted Erlang's legs, and said gracefully, "Equivalent replacement." ”

Yiling was not stupid, and immediately understood Ye Feng's meaning: "No problem! As long as you tell me the method of alchemy, ask for it! ”

Ye Feng admired Yi Ling's neatness very much, although he didn't know what benefits he could give himself, but no matter how bad he was, he was still a leader, and it should be no problem to ask for silver.

Ye Feng straightened his collar and dusted off his body, pretending to be deep: "Actually, it's not that I won't tell you, it's just that you can't reach that temperature at all." ”

"Why can't you do it?" Yiling asked repeatedly.

"That kind of high temperature is beyond the reach of manpower. When I was refining gold, I had the masters of the Upper Three Realms of the Nine Star Division to help control the fire, and I succeeded once, you ...... Presumably, there is no cultivation in the upper three realms. Ye Feng said coldly.

In the face of Ye Feng's cynicism, Yiling didn't care at all, his heart was full of excitement that he was about to learn a new alchemy.

"Although I don't have the cultivation of the Upper Three Realms, it doesn't mean that I can't control fire." Yiling said loudly.

Ye Feng's heart moved, he stood up suddenly, and said in surprise: "You can also control the fire?!" ”

Yiling nodded, not knowing where to find a mirror.

The mirror is eight-edged and octagonal, beautifully carved, and there is a phoenix inhabited in it.

Although Ye Feng didn't know the origin of the mirror, judging from its appearance, it was obviously not an ordinary thing.

"What is this?"

"This is a magic weapon created by a high-grade instrument master, called Fengming Xuanjing, which can control fire." Yiling held the mirror in his right hand and snapped his fingers with his left hand.

Suddenly, a bright flame appeared and jumped in the mirror.

Damn, magic weapon, this is a good thing, I have to find a way to get here.

"What kind of temperature do you need?" Yi Ling held the Fengming Xuanjing in his hand, and his face showed a solemn expression.

This shows that he has turned on the serious mode.

"It's above 1,400 degrees Celsius." Ye Feng's gaze never left the magical mirror, and he loved it very much.

"Celsius?"

Yiling was stunned for a moment, curious about this term he had never heard before.

"It's the temperature, and I named it Celsius." Ye Feng smiled and nodded.

"Oh, Celsius ......" Yiling silently recited the term several times, reciting the term.

As an alchemist, he learned a new point.

It seems that although he is the head of alchemy, alchemy is extremely profound, and he has only scratched the surface, and there are still many unknown things that need to be learned by himself.

"So, what is 1400 degrees Celsius?" Yiling stepped forward and asked.

Ye Feng's mind was on how to get that mirror in his hand, and said casually: "You keep heating, I'll tell you when the temperature is enough." ”

Subsequently, he briefly explained the phosphorus extraction process.

First, the sand and gravel mixture is heated, and then the resulting steam is passed into cold water to obtain phosphorus.

Yiling is worthy of being a genius in alchemy, just after listening to the process, he immediately understood how to operate. He was very skillful in arranging and combining the chemical utensils on the table, which was the same as what Ye Feng had placed in the Nine Star Division.

"It's a little thorough, the children can be taught, let's start."

Yi Ling was both frightened and excited at this time, holding the Fengming Xuanjing in his hand and aiming at the porcelain bowl containing a mixture of sand and stone.

"Don't forget the equivalent replacement." Ye Feng reminded.

Yiling nodded vigorously: "Don't worry, I will never break my word." ”

The flames jumped, the temperature increased, and under the guidance of Ye Feng's temperature, a series of chemical reactions appeared as scheduled.

The next moment, a scene that shocked Yiling happened.

An irregular white powdery solid appeared in the cold water of the porcelain bowl.

What shocked him even more was that under the operation of the white powder Ye Feng, a ghost fire was generated.

"Cheng ...... It worked?! Yiling was a little incredulous.

Ye Feng nodded, and said lightly, "It's successful." ”

"I really made it!" Yiling jumped on the spot excitedly, and kept cheering: "I have finally refined this brand-new substance!" I'm going to name it! It's called Yiling Powder! Hahaha! ”

Ye Feng looked at Yi Ling's somewhat crazy appearance, and said lightly: "This is called phosphorus." ”

"Phosphorus?" Yiling was stunned for a moment, and suddenly felt that his eyes lit up, as if a beam of light suddenly appeared in the endless darkness: "This name is good!" It's called phosphorus! ”

After being excited for a while, Yiling slowly calmed down, after all, in front of Ye Feng, he couldn't be so frivolous.

He froze: "Well, what conditions do you have, say it, as long as I can do it, I will definitely satisfy you." ”

Ye Feng rubbed his hands excitedly and pointed to the Fengming Xuanjing in Yiling's hand: "I want this." ”

"You want this? No way! Yiling frowned suddenly, and his face changed suddenly.

"No way?!" Ye Feng suddenly became angry, and asked in a loud voice: "I told you all about such mysterious alchemy, you are reluctant to have a mirror?!" ”

"It's not that I'm reluctant...... It's just that...... This is a magic weapon specially created for me by the instrument master, to help me with alchemy......" Yiling didn't expect Ye Feng's reaction to be so big, after all, he was at a loss, and his voice weakened suddenly.

"So what?!" Ye Feng asked.

"Because the magic weapon created by the high-grade appraiser needs to establish a contract with the user before using it. In this way, the artifact can only be used by the person who made the contract. So, even if I give you the Fengming Xuanjing, you won't be able to use it. Yiling explained.

Ye Feng was suspicious and looked at the young man in front of him: "Really? ”

"Of course it's true!"

"Then I don't care, you have to ask the master to get me one."