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Rock rubbed the space between his eyebrows and walked quickly out of the corridor.
Originally, he just needed a Pepperup Potion, but now he probably needed a Calming Draught as well.
When Quirrell walked past him, Rock had genuinely held his breath, not daring to make a sound. Usually, Quirrell moved about under everyone's gaze.
But just now, Quirrell was likely conversing with Voldemort, and Rock dared not reveal any sign of his presence.
If one truly believed that Voldemort possessing Quirrell posed no threat, they would be severely underestimating the Dark Lord.
At the entrance to the Hospital Wing, just as Rock was about to knock, Madam Pomfrey opened the door directly. Seeing Rock, she immediately frowned, bending down to examine him. "Caught a cold?"
"No, Madam, just been busy with studies lately, so I wanted to ask you for some Pepperup Potion." Rock waved his hands hurriedly. "Oh, and a bit of Calming Draught too."
Madam Pomfrey looked puzzled. "Is the first-year curriculum that demanding? Come in."
Rock naturally couldn't explain that his own greed for knowledge was the cause.
Walking into the Hospital Wing, Rock saw a figure on a hospital bed not far away.
Someone was sick?
Before he could think too much, Madam Pomfrey walked over and handed a bottle of greenish potion to Rock. "Drink this first. If you don't control your current condition, you'll definitely have a fever by today."
"A student already collapsed yesterday for this reason."
Rock nodded, opened the potion bottle, and downed it in one go.
Even though he was prepared, the moment the liquid entered his mouth, Rock felt something was wrong. His eyes widened involuntarily, and he quickly covered his mouth to avoid spitting it out.
Then, a wave of heat flowed from his throat into his stomach and spread throughout his body.
"Phew—"
Rock opened his mouth and exhaled a breath—actual steam. After exhaling this internal heat, Rock felt much more energetic.
"Sorry, Madam."
Rock, having recovered, looked at Madam Pomfrey apologetically. His action just now had been quite rude.
"It's fine, the potion is like that. feel much better?" Madam Pomfrey asked while observing Rock's condition.
"Mhm, this potion is amazing!" Rock exclaimed. He felt significantly better now.
Madam Pomfrey smiled at his words, then changed her expression to a serious one as she looked at Rock. "This isn't a private hospital, so pay more attention to rest in the future. If you're not feeling well, ask a classmate to pick up potions for you."
"Coming out in this state, sweating all over, you're lucky you don't have a fever."
Rock nodded repeatedly. If he dared to argue at this moment, he would really get a lecture from Madam Pomfrey.
Madam Pomfrey didn't make things too difficult for Rock. She took out another bottle of potion and instructed, "This is what you asked for, but only take three drops every ten days."
"Thank you, Madam."
After taking the potion, Rock thanked her again before leaving the Hospital Wing.
Seeing that he still had some time, Rock went alone to the Room of Requirement.
It was still the secret room used for the third analysis of the Philosopher's Stone, but it was very different now. Various medicinal ingredients were placed inside.
On the table lay a notebook, a cauldron, and other items.
"Alright, fifth potion formula experiment, begin."
Rock took off his wizard robes, rolled up his sleeves, and got to work. Following the formulas from the previous few times and eliminating some ingredients, Rock began preparing the materials.
Grinding, proportioning.
Thanks to his school detentions, Rock was now quite familiar with ingredient processing.
At the very least, he understood the properties of almost all types of ingredients. Plus, having watched Snape brew potions often, he gradually developed a concept of certain operations and ratios.
"So far, from the previous formulas, the Moonseed used in the first and third attempts can be kept."
"The Developing Pearl Powder from the second and fourth attempts can also be kept. This time, I need to try adding Silverweed."
Rock rubbed his chin, starting the fifth formula experiment. As for how he knew the results...
The feedback from the "Daily Inscription" was Rock's reliance. After every brewing attempt, the inscription would clearly describe which of the ingredients he used was the optimal choice.
He just needed to constantly swap ingredients during this phase.
As Rock stirred the cauldron with a stirring rod, steam with a cool scent floated up.
The gas made Rock feel a bit choked.
He frowned, wondering if he had added too much Silverweed juice.
Poof—
The next moment, the liquid in the cauldron contracted rapidly, and a puff of black smoke exploded.
"Cough, cough..."
Rock coughed a few times, waving away the black smoke in front of him.
[Silverweed dosage must be controlled within three drops; overdose leads to structural damage of the medicinal liquid.]
The "Daily Inscription" reminded Rock the very next moment. Looking at the words, Rock started recording in his notebook.
He had just used five drops. Although the inscription reminded him not to exceed three, he still needed to test it.
After cleaning the cauldron with a wave of his wand, Rock threw himself into the experiment again.
Three drops of Moonseed juice, one gram of Developing Pearl Powder, one hundred milliliters of distilled water, and two drops of Silverweed juice.
When gas appeared in the cauldron again, Rock picked up the stirring rod and stirred seven and a half times clockwise. Waiting for the liquid to concentrate again, Rock raised his wand and levitated the cauldron.
The liquid inside began to slowly condense, eventually leaving only a thin layer of liquid with a hint of silver light at the bottom.
Putting it into a potion bottle, Rock shook the liquid. Seeing the slight silver sheen, he couldn't help but smile.
Although not successful yet, at least the three main ingredients had been found.
Holding the potion bottle, Rock began to sense. This was another one of his reliances—using his current magical perception to explore the "lines" within the medicinal liquid.
"Tsk—activity loss is even greater than last time."
Rock placed the potion bottle on a tray to the side, where samples from the previous four attempts were kept.
"What's the reason?"
Rock picked up his notebook and started writing and drawing. Halfway through, his quill stopped.
"Cold water bath."
There is an operation when brewing some potions, which is to quickly cool the temperature of the liquid in the cauldron to a relatively low level in order to maintain the activity of the liquid.
Just now, he had only moved the cauldron away from the heat source and waited for the liquid to contract slowly.
During this period, a large part of the activity in the liquid had already been consumed.
The previous times, he hadn't added Silverweed. With the addition of Silverweed, not reconsidering the heat control during brewing led to an accelerated contraction speed of the liquid, which was also the reason why the cauldron exploded just now.
Shaking his head, Rock recorded this point in his notebook so he would remember it for future experiments.
After tidying up the things in the secret room, Rock turned and walked out of the Room of Requirement.
As he walked down the stairs, Rock was still considering potential ingredients to add for the next experiment.