Here's a clean, natural, and polished English translation in smooth novel style:
---
A jade bottle glided gracefully through the air, tracing a beautiful arc before landing lightly on the jade platform with a soft *ding*.
Xiao Jietian turned to look at Xuan Yi behind him. She was the one who had thrown it. Their eyes met, and with their deep mutual understanding, no words were needed.
"This is a two-colored eighth-grade pill called the Soul Gathering Pill," Xuan Yi said calmly. "After consumption, it can temporarily increase one's soul power by half. However, it is only effective for souls below the Heaven Realm. Is this satisfactory?"
The old man stiffened for a moment, then his face flushed with wild ecstasy. He swiftly grabbed the jade bottle as if afraid it might be taken back and laughed heartily. "Of course it's satisfactory! Extremely satisfactory!"
With this pill, he might even be able to attempt refining an eighth-grade pill that would attract one-colored Pill Lightning. His face full of excitement, he casually pushed four or five other items forward. "Consider these a small gift for all of you."
Xiao Jietian glanced at them. They were all medicinal ingredients for refining sixth- and seventh-grade pills—quite decent. He did not stand on ceremony and collected them together with the Liuli Grass.
"This old man will take his leave first!" The old man could no longer suppress his urge to return and begin experimenting. He had already inspected the pill and found no problems. Moreover, the other party's purple-gold badge was enough to put his mind at ease.
After all, a mere two-colored eighth-grade pill was probably nothing special in their eyes.
Seeing that the old man was about to leave, Xiao Jietian also led Xuan Yi and the others away. There was nothing else of value at the stall.
The group continued browsing the entire trade fair, but they failed to find the other three main medicinal ingredients they needed. Still, they managed to obtain five auxiliary ones.
"The harvest from this trade fair is quite good," Xiao Jietian said with a smile.
"This place isn't open every day," Xuan Yi replied. "It's usually held only once every one to two years, so naturally there are plenty of good items."
Unless she was in seclusion, Xuan Yi would basically attend every session to see if any overlooked medicinal ingredients had appeared.
This time, she had also found two ingredients she needed. For an alchemist, medicinal ingredients were beloved treasures. Whether they could use them immediately or not, they always liked to collect high-grade ones whenever they surfaced.
Alchemists were a profession full of collectors. Killing a high-level alchemist would instantly make one rich, yet very few people dared to do so—except for certain reckless individuals.
Seeing that there was nothing else worthwhile, the four of them returned to the second floor and approached the counter.
At the counter, besides the original deacon, two more old men had appeared.
"Elders, these two have come to exchange for the medicinal ingredients from upstairs," the deacon said respectfully upon seeing Xuan Yi and the others return. He then introduced the ingredients the two men were offering.
What surprised Xiao Jietian was that one of them was selling a Green Wood Heart.
The Green Wood Heart was the heart of an Evergreen Tree—a rare medicinal ingredient used for healing injuries, strengthening the body, and enhancing elemental affinity.
The other person was offering two auxiliary medicinal ingredients, both relatively rare and difficult to find.
In the end, Xuan Yi exchanged one Soul Gathering Pill with each of them for the three medicinal ingredients.
The two old men who completed the transaction quickly took their leave. After all, facing a core elder of the Pill Tower, they—mere intermediate seventh-grade alchemists—felt considerable pressure.
"You did very well this time. This is your reward," Xuan Yi said. "If you find more in the future, you can directly ask someone to contact Elder Qin Zhengfeng. The more you find, the greater the reward will be."
She took out a seventh-grade intermediate pill and placed it on the counter. After giving her instructions, she left with Xiao Jietian and the two girls.
"Yes! Thank you for the Elder's reward" The deacon's face lit up with excitement. Seeing how generous she was, he secretly decided to work even harder to search for medicinal ingredients. This was a rare opportunity.
Other elders in the past had always been arrogant, offered no benefits, and sometimes even humiliated people.
...
After strolling around outside for a while longer, the four of them returned to their residence on the top floor of the Pill Tower.
"Daddy, quickly take out that thing you found and let us see!"
In Xuan Yi's room, Xiao Ling climbed onto Xiao Jietian's lap and sat down, eagerly urging him.
Xiao Meng and Xuan Yi on the other side also looked at him with expectant eyes.
"Alright, alright." Xiao Jietian took out the fist-sized piece of amber from his system space and placed it on the table.
"Just this broken stone? Isn't this just ordinary amber?" The three of them curiously examined the yellow amber. Xiao Ling poked it with a puzzled expression. "Are you saying the real treasure is that small, beetle-like insect inside?"
Xuan Yi scanned it several times with her soul power but found nothing unusual. Inside, there was only an insect and some small black stones. She had never seen that kind of insect before.
However, its aura was only equivalent to a Dou Zong, and its life force had long since faded. It was truly a dead object.
"Exactly. Daddy, stop teasing us~~" Xiao Meng tugged on Xiao Jietian's shoulder, acting spoiled.
"Alright~" Xiao Jietian gently patted the heads of his two daughters. He summoned his Eight Desolate Destruction Flame, and a pale black flame appeared in his palm as he began to burn the amber.
Xuan Yi's eyes widened in shock at the sight of the Eight Desolate Destruction Flame.
*Eight Desolate Destruction Flame…*
She had seen it on him before, but never this close. As an alchemist, she felt deep envy. She herself did not possess even a single Heavenly Flame, yet Xiao Jietian already had two—and one in the top six.
"Do you have more Heavenly Flames?" Xuan Yi asked.
"Yes," Xiao Jietian replied. "I have more. Don't envy me. I'll give you a very powerful flame—one that can rival this one."
Xuan Yi was stunned. As an alchemist, a Heavenly Flame was extremely important to her, so she couldn't help but feel secretly excited.
Xiao Jietian continued using the Eight Desolate Destruction Flame to burn the black stones.
Xuan Yi asked in confusion, "What's happening? There's no reaction."
Hearing his earlier words, she understood that the outer layer of the amber was not the real treasure.
Five seconds later, the golden-yellow amber had completely disappeared, leaving only four black stones the size of rice grains and a small black beetle on the table.
Xiao Ling looked at the beetle, which was slightly larger than an adult's finger, and took out a jade rod from her storage ring.
The moment the jade rod touched the black beetle, it shattered with a crisp *snap*, breaking into small pieces.
Xiao Ling was instantly stunned. The jade rod slipped from her hand and fell onto the table with a clear clink.
"Th-th-this… I… I didn't mean to. I didn't expect it to be so fragile," Xiao Ling looked at Xiao Jietian with a hint of panic, then hurriedly picked up the jade rod again and tried to scrape the beetle's remains together.
"Hahahaha." Seeing Xiao Ling shrink her neck and act flustered, Xiao Jietian couldn't help but burst out laughing. He then feigned a stern expression. "You destroyed my treasure. Your butt is forfeit."
"Ah?!!!" Xiao Ling immediately threw away the jade rod and burrowed into Xuan Yi's arms.
---