"Xu Gongzi...."

Faced with this unfamiliar title, Wei Yuan and the others instinctively searched through the internal list of the Celestial Observatory, searching among the five direct disciples of the current supervisor.

No, this person in white said "Xu Gongzi" instead of "Senior Brother Xu". The one giving the lecture is not a disciple of the Celestial Observatory, but an outsider.

Surname Xu.... Could it be.... Princess Chang's eyes flickered with a bold guess, and she couldn't wait to verify it.

At the same time, Wei Yuan's eyes showed a sudden realization, and he had a certain guess.

Song Qing had told him before that Xu Qi'an was an extraordinary alchemy genius, but Wei Yuan didn't pay much attention at that time, after all, Song Qing was the number one alchemist in the Celestial Observatory.

The "genius" he referred to might only have outstanding alchemy talent, definitely not comparable to the number one alchemist, even known as "my teacher".

Wei Yuan glanced at his two adopted sons, and they both had the same look of confusion and bewilderment on their faces. Obviously, they didn't connect Xu Gongzi with Xu Qi'an, and they had forgotten what Song Qing had said that day.

"Adoptive father, when did a Xu surname appear in the Celestial Observatory?" Nangong Qianrou, in charge of intelligence and interrogation, was extremely sensitive to this sudden appearance of a person.

Yang Yan, who doesn't like to talk, turned his head slightly and looked at Wei Yuan with a questioning look.

Although the two Golden Gongs had forgotten Song Qing's evaluation of Xu Qi'an, they still remembered what Jiang Lvzhong had said the other day.

Wei Yuan smiled, "You'll know when you go upstairs."

Princess Chang had already lifted her skirt and elegantly climbed the stairs. She was tall and well-proportioned, and her back alone gave people infinite beauty.

Without needing to see her face, one could tell she was a stunning beauty.

....

"The essence of alchemy is equivalent exchange."

The clever white-robed sorcerers answered his questions with Xu Qi'an's words.

"Extracting the essence from things, turning waste into treasure." There were also alchemists who gave answers based on their own experience.

Sorcerers below sixth rank did not answer, focusing on listening to the lecture. Sixth-rank alchemists all spoke up, giving their own interpretations.

Most of them were one-sided, giving answers based on their own experiences.... As for the guy who used my famous quote, he only knows one but not the other.... The Celestial Observatory's theoretical knowledge in alchemy is indeed lacking.

Xu Qi'an patiently listened, neither agreeing nor disagreeing.

After the white-robed sorcerers finished speaking, they all looked at Song Qing.

Song Qing was the supervisor's direct disciple and also the Celestial Observatory's recognized number one alchemist. He was immersed in the field of alchemy and refused to advance, only obsessed with alchemy, looking down on higher levels.

His fellow senior brothers and sisters of fourth and fifth rank were not as good as him in the field of alchemy.

Song Qing shook his head and sighed.

....What does Senior Brother Song mean? When the white-robed sorcerers were puzzled, they heard Xu Qi'an clap his hands.

Everyone immediately turned their attention to this alchemy genius.

Facing everyone's gaze, Xu Qi'an sighed, "In the entire Celestial Observatory, only Senior Brother Song is someone I admire in the field of alchemy, someone I see as an equal."

The white-robed sorcerers of the Celestial Observatory all showed respect.

Song Qing smiled slightly and straightened his back quietly.

Xu Qi'an continued, "What Senior Brother Song means is that everyone here is correct, but not comprehensive enough, so none of them are entirely correct."

Everyone showed a thoughtful expression.Xu Qi'an spoke confidently: "Alchemy is a very broad field. Those present may have some understanding, but it is still vague and general... Well, originally, I only promised to teach you one knowledge at the request of Senior Brother Song Qing, but he insisted on me giving more, so I will talk more, broader and more thorough."

As soon as he finished speaking, the white-clad sorcerers' eyes lit up with excitement.

"Thank you, Senior Brother Song and Master Xu."

"Master Xu, please start. I can't wait any longer."

The noise rose up and reached the ears of the Crown Princess who had just climbed up to the seventh floor. She stopped in her tracks and did not immediately enter. Instead, she watched from a distance, hidden, at the young man standing in front of the table, passionately instructing the usually proud sorcerers.

Xu Qi'an, it was really him!

Wei Yuan also paused in sync with the Crown Princess. He saw Xu Qi'an and hesitated for a moment before resuming his expression.

As Wei Yuan stopped, Nangong Qianrou, with a gentle temperament, and Yang Yan, with a poker face, also looked over Wei Yuan's shoulder and caught a glimpse of Xu Qi'an.

So Jiang Lvzhong was telling the truth... Yang Yan stared at Xu Qi'an for a moment and nodded almost imperceptibly.

This bronze gong could only be under his command, and no one else should think of taking it.

Nangong Qianrou had originally wanted to directly listen in, to see what kind of nonsense the boy could come up with, but sensing that the Crown Princess and adoptive father had no intention of disturbing them, she held back and stayed put.

Xu Qi'an said, "The essence of alchemy is equivalent exchange, which is the guiding principle, but it is not intuitive. Only alchemy masters like Senior Brother Song Qing can comprehend the true meaning of this phrase. Today, I will start from the basics and slowly elaborate."

"When it comes to alchemy, laymen will instinctively think of elixirs and potions. Those who know a little more will definitely think of this..." Xu Qi'an said, pointing to the simple jewelry on Chu Caiwei's green hair, "Metals!"

The white-clad sorcerers nodded slightly.

"What I want to tell you is that this is only two of the fields of alchemy. I classify them as the medical field and the material field. Most alchemists only study in these two fields and occasionally venture into other fields. But only Senior Brother Song, his gaze is already in a separate field."

The white-clad sorcerers immediately looked at Song Qing. Song Qing was taken aback and looked like he had found a kindred spirit, his eyes suddenly burning.

He knew that Xu Qi'an was going to focus on the field of biological grafting.

Perhaps, this lecture would be an important step for him to step into a completely new field of alchemy.

Thinking of this, Song Qing's breathing became rapid.

Outside, the Crown Princess and Wei Yuan couldn't help but look at Song Qing. They were not unfamiliar with this peculiar disciple of the supervisor.

They knew he was always tinkering with some terrifying alchemy, and he had even been confined by the supervisor because of it.

Was Xu Qi'an's alchemy really so advanced that he could instruct Song Qing?The other white-robed sorcerers present all looked skeptical and unconvinced.

Princess Chang turned her head and looked at Wei Yuan with an inquiring gaze. He smiled and whispered, "My opinion is the same as the chief's."

Princess Chang nodded and looked back at Xu Qi'an.

Let's see what he had to say.

"That's because Senior Brother Song's method is wrong, so the chief criticized him. But his direction is not wrong," Xu Qi'an said.

He certainly wouldn't argue with the chief. Even if he won the argument, if the old man wasn't happy and slapped him to death, who would he cry to?

When Song Qing heard this, he was dissatisfied but did not refute it, patiently listening to what Xu Qi'an had to say.

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"Let's recall how we extract metal from ore, extract harder metal from metal, and refine elixirs from herbs. But we cannot extract elixirs from metal or extract metal from herbs," Xu Qi'an teased. "Why is that?"

"Herbs are herbs, and ore is ore. Your question is strange, Master Xu," one of the white-robed sorcerers said.

"Haha, if we can extract metal from herbs, can't we extract gold and silver from rice?" Xu Qi'an replied.

To the white-robed sorcerers, Xu Qi'an's question was like asking why the sun rises in the east, why people starve to death without food, and why there are twelve hours in a day.

The white-robed sorcerers whispered to each other, but Song Qing vaguely sensed something. The noise made by the white-robed juniors confused him, and he couldn't calm down to think.

"Snap!"

Song Qing slammed the table and stood up, shouting, "Silence!"

After yelling, he turned red and breathed heavily, staring at Xu Qi'an. "You said it, hurry up!"

The white-robed sorcerers fell silent. They rarely saw Song Qing like this and realized that what Xu Qi'an said was truly profound knowledge of alchemy.

Xu Qi'an's gaze passed over the white-robed sorcerers and saw Wei Yuan from afar, feeling a sinking feeling in his heart.

...Damn, he was showing off and the leader was watching... Xu Qi'an instinctively felt a resistance, a sense of guilt.

The sorcerers of the Heavenly Observatory were like a group of rigorous science nerds. They only cared about alchemy itself and didn't care about its origins.

Even if they found it suspicious, they would automatically ignore it as long as they could learn profound alchemy. They didn't care about anything else.

Wei Yuan was different. He was a politician, military strategist, and intelligent person with a lot of accolades.

Intelligent people tend to overthink things.

Xu Qi'an's strategy for the white-robed sorcerers was to show off in front of others and exaggerate. But for Wei Yuan, the strategy was to show loyalty and to tactfully play along.

The current situation was clearly not just a small show-off, but a direct backflip.

At this point, Wei Yuan nodded slightly at Xu Qi'an.

"Phew... if we think about it from a different angle, showing one's own value in front of leaders is also an effective way to gain attention and increase leverage!" Wei Yuan said.

Xu Qi'an took a deep breath, cleared his mind, and refocused on the class.