"What are the applicable targets for anaesthetic spray?"
"Wizards, Muggles, magical creatures..."
"Wrong. Without magical protection, Muggles using this potion will be directly paralysed."
"Oh, right."
While engaging in this question-and-answer session with Leo, Harry frantically took notes. As soon as Harry finished writing, Leo spoke again.
"What are the usage restrictions for deodorising spirit?"
"Um, I don't remember."
"It cannot contact open flames; otherwise, its power is no less than a Blasting Curse."
The more he taught, the more Leo realised the problem wasn't small. Harry indeed had talent in Potions, but it was more reflected in practical brewing. When it came to pure theoretical knowledge, he couldn't remember details firmly, especially specifics about potion usage.
So this kid had previously only remembered general effects and would directly throw them at people when needed. No, he couldn't let him continue like this.
Leo thought that Harry wouldn't affect his magical achievements but could ruin his reputation in education. Potion brewing should maintain the previous practical exercises, but his theoretical knowledge—well, recitation, dictation, homework, exams...
For no reason, Harry, who was still writing furiously, seemed to sense a chill.
After finally finishing the tutoring session, Harry rubbed his wrist, stiff from writing so much.
"Leo, thank you for treating me yesterday. That transparent liquid must be quite expensive. I'll compensate..." Harry originally wanted to say he'd pay in Galleons, but previously when finding Leo for tutoring, he'd said not to insult him with money, and Leo didn't seem to lack money anyway.
"Then I'll go to Gringotts to find more books. It's to thank you for this help! Oh right, Hagrid already helped me go to Gringotts. He should be able to bring back the books we agreed on today."
Leo nodded without declining. Having Aurelius produce some saliva really wasn't difficult, but Qilin saliva's inherent value was obvious. Moreover, based on yesterday's performance, Aurelius's Qilin saliva had flesh-regenerating effects, much stronger than the native Qilin saliva described in books.
Well, it seemed the little Qilin was also an endless treasure trove. He could also research the effects of other materials from Aurelius, like shed scales and hair... Speaking of which, could he use these to trade with Snape for potion ingredients? He remembered when he went to Snape's office, there were quite a few valuable materials there.
"Leo, did I do wrong last night?"
Hearing Harry's sudden question, Leo was somewhat surprised. "Why do you ask?"
Harry lowered his head dejectedly: "If I had just run directly then, maybe none of this would have happened. Fortunately, it was me who got bitten, not Ron or Hermione, because of my showing off..."
Faced with Harry's self-reproach, Leo didn't directly comfort him but asked an unrelated question: "What do you think learning knowledge is for?"
Harry didn't understand why Leo asked this: "To make oneself smarter?"
Leo first nodded, then shook his head. "Learning knowledge can be to understand the world, to solve problems, or to strengthen the mind... But knowledge should definitely not be used for showing off, not for putting yourself and friends in danger."
At first Harry listened in confusion, but hearing the end, he lowered his head in embarrassment.
Seeing the future saviour's expression, Leo smiled gently: "However, your courage in wanting to protect your companions at that moment was completely right. Courage is one of humanity's greatest virtues."
Harry raised his head, listening to Leo's words in a daze.
"Of course, besides courage and knowledge, sometimes you also need to learn strategic retreat!"
Though he didn't fully understand, Harry still nodded emphatically.
"Alright, Harry, memorise this knowledge first. I'll test you with dictation when I return."
After assigning Harry his memorisation task, Leo left the hut. Going slightly deeper into the Forbidden Forest edge, Leo summoned Aurelius.
"Come, let's see what magical creatures you've found."
Ten minutes later, Leo still used the combination of Disillusionment Charm and stealth potion, recording a group of magical creatures not far away: Diricawls.
Fat-bodied, flightless, covered in downy feathers. The Diricawl Leo was watching suddenly disappeared, then instantly appeared not far away.
Quite an interesting ability. The quill continued writing: Can use short-distance but very fast teleportation.
Writing this, Leo recalled something quite interesting he'd read in books. This magical creature, the Diricawl, was actually also recorded in the Muggle world. But Muggles had named it the "dodo bird".
Yes, that dodo bird is considered extinct. Because these birds could freely disappear, and Muggles didn't know this, thinking they had hunted them to extinction.
But this actually promoted Muggle animal conservation awareness, beginning to consciously reduce excessive hunting and killing. So the International Confederation of Wizards felt there was nothing wrong with not letting Muggles know Diricawls still existed.
Looking at these happily playing little fat birds, Leo thought of the records he'd seen in books before encountering the magical world, and the skeletons displayed in museums. Well, not being discovered was quite good.
After recording the second magical creature species' characteristics and habits, he still needed to measure their physical data. Leo thought about it and decided to use this opportunity to test something. Whether Fang and Fawkes' previous affection toward him was due to him being the Qilin's master, and whether it was effective on other animals too.
Waving his wand to remove the Disillusionment Charm while dispelling the stealth oil on his body, Leo's presence was immediately exposed to those Diricawls' perception.
Whoosh.
All the Diricawls disappeared. Leo patiently waited a few seconds.
One, two—the group of Diricawls gradually returned to their original location. From over ten metres away, they observed Leo, who had suddenly appeared.
Watching those little fat birds' cautious peeking, Leo also understood. His current self indeed created affinity with animals; otherwise, these Diricawls wouldn't have returned after running away.
They weren't naive creatures that would look back to see what the unknown danger was after encountering it. Well, as wild magical creatures, this group of Diricawls was more vigilant. Better not approach rashly, or they'd probably really be scared away.
If his animal affinity trait was really brought by the Qilin, then...
"Aurelius."
The little Qilin's figure quickly appeared beside Leo. Seeing the Qilin appear, those little fat birds jumped up directly.
After carefully examining Leo again, one Diricawl hopped over. Then the group of Diricawls came rushing over one after another.
Most circled around Aurelius, with occasional bold Diricawls rubbing against its legs. Only one young Diricawl stood in front of Leo, looking at him curiously with pure eyes.
Leo crouched down and picked up this "extinct" "dodo bird".
Hello there, little fellow.