"Interested, no, no, no......" Slughorn quickly shook his head, a little incompatible: "I mean...... I'm still a little interested in these antique products......"

As he spoke, his eyes barely took his eyes off Jon's pocket.

Judging from the other party's expression, Jon could basically conclude that it was ...... He took the bait!

"Professor Slughorn, here's exactly what happened—" Mrs. Greengrass, who was on the side, couldn't wait a little longer, and she took the initiative to speak, "Mr. Hart would like to ask you a question......"

"Question?" Horace-Slughorn's face changed suddenly, he glanced at Diana Greengrass rather vigilantly, and then at Jon, and refused in a somewhat cold tone: "Hmph, I'm not a Hogwarts teacher yet, and I still want to enjoy a few days of pure life!"

Obviously, Slughorn's vigilance was higher than Jon and Mrs. Greengrass had imagined.

As Tom Riddle's mentor, he is also one of the few wizards who knows Tom Riddle's true identity...... Horace-Slughorn was extremely sensitive to his own experiences, fearing that the Death Eaters would use him to win him over, and fearing that the Ministry of Magic would "settle scores" with him as a result...... So Mrs. Greengrass had just shown a hint of horse's feet when he discovered it.

Mrs. Greengrass's face also changed, and she realized that her words had just helped, and she quickly and quietly looked at Jon with a pleading look.

"yes, it's just a matter of teaching. The expression on Jon's face didn't wave, and he began to rummage through the suitcase unhurriedly.

Slughorn looked at him with a somewhat unkind expression, and then—

"What do you think of this?" Jon pulled out a small crystal bottle containing a clear liquid and handed it to him.

"This is ......" the expression on Slughorn's face gradually softened a little, and he took out his wand, lightly touched the crystal bottle, and even poured a drop into his hand, licked it lightly, and then spit it out:

"Truth Elixir...... It seems to be the work of a novice, the feathers of the stunner are slightly more, the bile of the Sri Lankan vulture is not processed carefully enough, and the use of ferret heart tendons, the heart tendons of its practical stone mink will be more effective...... Honestly, there are a lot of faults!"

After decades of being a potions teacher, he began to judge the vial out of professionalism.

Putting down the crystal bottle again, Slughorn looked up and glanced at the boy in front of him:

"Is this what you deserve?" his voice was a little strange.

"yes!" Jon nodded.

"Oh, Merlin's beard!" Slughorn looked at Jon with a strange look, and muttered after a long time:

"How old are you......"

"I'll be fifteen years old in a few days. Jon smiled and said.

"Fifteen years old and haven't gone through yet. What about the LS exam...... Although the finished product is relatively coarse, it is a great achievement to be able to formulate a truth teller at this age...... Dumbledore's previous assessment of you was correct!" Slughorn couldn't help but compliment.

Slughorn was right, this bottle of Truth Potion was the first high-grade potion Jon had ever concocted, and it was rusty at the time, so it was inevitably rough...... Tell him to mix it now, and the effect of the potion will definitely be much better.

However, he obviously won't tell Slughorn, he just needs to use this to make Slughorn pay some attention to himself, and that's enough.

......

"It's a lot worse than you!" Jon complimented Jon as he put the bottle back into his suitcase, "Professor Dumbledore mentioned you as the best potions master of the century in England...... Even our previous Potions teacher, Professor Snape, is a big gap from you!"

"Oh, is it?" This compliment made it clear that Slughorn was very useful, and he nodded with a beautiful face: "I can't see it, Professor Dumbledore still values me...... No wonder you want to ask me to go out again this time. ”

"So out of respect for you, I'm here to ask you for advice!"

"Only potions!" Slughorn said, grimacingly.

"Of course...... It's just going to be an academic problem......" Jon smiled and nodded, "Actually, I just wanted to have a competition with you this time!"

"Competition...... Hahaha!" Slughorn laughed heartily, "I don't look down on you, but how old are you, young man......"

"Of course, the competition is just talking, and the real purpose is to ask for advice...... I hope to observe the gap between you and you in the process of preparing the same potion and learn something...... After all, I'm not a Hogwarts student anymore, and I don't have many plans like that in the future. Jon explained calmly.

Looking at Slughorn's somewhat disdainful eyes, he added, "I see you're very interested in the locket I just took out...... If I lose, I'll give it to you as a bargaining chip!"

Slughorn's breathing grew short, and he asked in a huffy voice, "What if I lose!"

"To be honest, I didn't even think I had a chance of winning...... You can answer me a question then, academically!" Jon said unhurriedly.

Slughorn glanced at Jon with some alarm, apparently aware that there might be a conspiracy in the other party's words...... But the Slytherin relics were too attractive for him to refuse.

What's more, Slughorn was extremely careful about his potion level, and he didn't believe that he would lose to a hairy boy under the age of fifteen.

He nodded: "I agree to your conditions...... But I can only answer your questions about my studies, and if you ask another question, about my past or my privacy, I won't answer it!"

"Of course. Jon nodded, "I can swear, I can even make an unbreakable oath." ”

"I also suggest that you make a vow between you. Mrs. Greengrass smiled and said, "In order to prevent Mr. Hart from losing the debt, or taking out a fake or something to perfunctory you, Professor Slughorn." ”

"No problem!" Slughorn hesitated for a moment, then nodded.

"Then I'll be a Witness!" said Mrs. Greengrass.

......

Horace Slughorn and Jon Hart shook each other's right hands.

Diana Greengrass took out her wand and placed its head on the two hands they were holding.

"Mr. Hart, would you like to have a potion contest with me, and if you win, give me the Slytherin relic I just saw!" Slughorn asked.

"I do. Jon nodded.

A thin, dazzling tongue of fire erupted from the wand, like a red, hot wire, wrapped around their two hands.

"Professor Slughorn, if you lose, you need to answer my academic question. This time it was Jon's turn to speak.

"I do. Slughorn said.

A second tongue of fire erupted from the wand, intertwining with the first, forming a thin, red-glowing chain.

Then he added: "The questions you ask me are limited to academics, not my past!"

"I understand. Jon nodded again.

A third tongue of fire erupted from the wand, intertwined with the two in front of it, wrapped tightly around the two hands they were holding, like a rope, like a fire-breathing snake.

A smile appeared on Jon's lips as he was illuminated by the three tongues of fire.

PS: The great news, this chapter says that all of them are back, including the previous chapters.