Mrs. Diana-Greengrass looked at what was happening in front of her with some nervousness.

Both Jon Hart and Horace Slughorn were fully engaged in the preparation of potions...... Two huge cauldrons were steaming hot into the sky, and both wizards were tired.

They had spent more than a day and a night preparing the potion...... There is hardly any rest in between.

"I'm done!" Slughorn let out a long sigh of relief.

Jon ignored him, and instead concentrated on his crucible, adding half an ounce of powder from bird snake eggs, and a little powdered ordinary rue......

Slughorn had already taken out his wand, aimed it at his cauldron, and whispered:

"Felixempra!"

The potion inside the crucible quickly turned golden, like molten gold, and large drops of liquid splashed inside the crucible, like goldfish, but not a drop spilled outside...... The aroma came from inside the cauldron, and it was very pleasant to ask.

Jon struggled not to feel the scent, and he deftly pulled out his wand and drew a figure 8 above the cauldron:

"Felixempra!"

The potion in his crucible also began to turn into drops of golden liquid, but instead of splashing around like Slughorn's potion, it obediently shrank in the center of the cauldron.

Moreover, the degree of gold is slightly better than the liquid in Slughorn's crucible.

......

Horace-Slughorn looked at his opponent's cauldron in disbelief, then at his own cauldron—

After several cycles like this, he had to bow his head in frustration and sigh:

"Looks like I lost!"

An experienced pharmacist can judge the potency of a blessing elixir by its golden degree...... Slughorn himself was too absent-minded and made a lot of mistakes in the initial formulation process, and even if he has been making up for it since then, the flaws are still obvious.

Jon used a more ingenious sequence of potions, and although the preparation process was relatively rusty, he made almost no mistakes, so he was slightly ahead of Slughorn.

Jon, who had slackened, collapsed in his chair, a smile on his lips.

Mrs. Greengrass, who was on the side, also had an excited smile on her face.

"If you're the heir of Headmaster Armando Dippert, then it's not too bad to lose to you!" Slughorn said with a relaxed face.

Jon, holding on to his tired body, stood up and poured the golden liquid out of the cauldron drops into a crystal bottle.

Bending down to put the crystal bottle into his suitcase, Jon turned to Slughorn -

He asked softly, "Professor Slughorn, you haven't forgotten our bet, have you?"

"Nope. Slughorn nodded, bound by an unbreakable oath, and he knew that there was no possibility of a no-show: "Tell me your problem, Mr. Hart...... Remember, academic content only. ”

"Of course!" Jon smiled and nodded, "What I want to ask is...... A Defence Against the Dark Arts ......"

"Defense Against the Dark Arts...... I thought you were going to ask about potions?" Slughorn muttered, without the slightest gravity of the situation, "Ask......"

"That's it...... How to make a Horcrux, the whole process?"

......

The entire castle fell silent.

Horace-Slughorn looked straight at Jon as if he could kill.

Mrs. Diana Greengrass, who was on the side, also cheered up, gently holding her wand in her right hand.

"I don't know anything about Horcruxes, and even if I did, I wouldn't tell you! Get out of here and don't let me hear you mention this again!" Slughorn snarled loudly, grimacing.

"Nothing can fool an unbreakable oath, you should know it well. Jon said calmly, "Even if you modify your memory or use some language loopholes, the effect will be the same!"

"Did Albus Dumbledore ask you here?" Slughorn asked coldly.

"It's not. Jon shook his head, "It's nothing to do with Dumbledore......"

"Then how do you ......?"

Before Slughorn could finish his sentence, Jon had already taken out the Slytherin locket from his pocket and threw it at Slughorn without looking: "Look at this and you'll know!"

"This locket ......" Slughorn took the locket, this time with no curiosity on his face, only caution.

After opening the locket and examining it carefully, Slughorn's face suddenly changed dramatically...... For the first time since Jon set foot in his residence, fear was seen on his face.

Diana ...... Can you go out for a while?" he said in a trembling voice.

Mrs. Greengrass looked at Jon with a curious and worried look, and Jon nodded lightly to her.

......

With Mrs. Greengrass gone, only Jon and Slughorn were left in the castle.

Slughorn's face was pale, like a dead man, and Jon was breezy and breezy of all.

"Who is the owner of this locket?" asked Slughorn, trembling.

"As I said, it used to belong to Tom...... Jon replied with a smile, "if it's Tom Gaunt's last name, and if it's my father's last name...... His name is 'Tom Riddle'!"

Slughorn's hand shook, and the wand in his hand fell to the ground with a thud.

"Are you his man?" he didn't pick up his wand, but looked straight at Jon.

"Count it half. Jon said honestly, "I've been with him for a while......"

Slughorn's cheeks were covered with sweat, and he bent down, picked up his wand, and wiped it with his sleeve...... At the same time, a thin, red-glowing chain had loomed beside him.

"That's your plan...... If you lose, threaten me with that?"

"yes...... But it's clear that it's safer to win...... Otherwise I don't know if you're going to cheat on me in your answer, or if you won't tell me the full answer!" Jon nodded, gesturing to the chains on Slughorn's body, "I'm in luck...... Professor Slughorn, I suggest you hurry up or you'll be considered a 'broken oath'!"

Slughorn snorted coldly, then lowered his voice: "Horcruxes, a very, very evil product of black magic......"

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