Ron's words had an unexpected effect, and Harry was silent for a few seconds before agreeing, and Ron didn't expect that he would have to work more hard to convince Harry.

For the rest of the lesson, they didn't mention Slughorn's evening again. In the days that followed, Harry's enthusiasm for the matter quickly overtook Ron.

"Harry, are you crazy? are you going to make your own polyjuice potion?" Ron asked in an incredulous tone.

"You came up with the idea. Harry said, "Don't worry, the polyjuice decoction isn't very difficult to make. ”

"Your progress in potions makes me smack. Ron wiped the cold sweat from his forehead, "Professor Slughorn said that compound decoction can be very problematic if it is not boiled properly, and I think it would be better for us to ask George and Fred to mail order the compound decoction, they now sell it in their store. ”

"It's a deteriorated version of a toy, and it only lasts five minutes. Harry said, "I've written to ask George and Fred a long time ago. ”

"Then why don't you stop by and ask them to buy some ready-made ones in Diagon Alley and send them over?"

"Because I'm not at ease, I want to make sure this compound decoction is foolproof, so I'm going to make it myself. ”

"And where are you going to make it?" Ron thought Harry must be crazy, "Polyjuice potion is not a potion that can be made in two classes, and the main ingredient of lacewings has to be boiled for 21 days! ”

"I naturally have a way to do this, but it takes a lot of ingredients to make the compound decoction, lacewings, leeches, liquid grass and two-eared grass are easy to get, and the students have them in the lockers, so we can get them ourselves. As for the horns of the powdered bicorns and the snakeskin fragments of the African tree snake, there is no way, we have to find a way to get these. ”

"Can't you just buy it?" Ron said.

"Powdered bicornus horns may be available, but African tree snake skins are not, and we may have to steal a few from Snape's private storeroom. ”

"Harry, there must be something else. Ron shook his head, "It's not a good idea to steal something from Snape's private storage, you can ask Slughorn directly, you're his little prince of potions,"

"We're going to Slughorn's Christmas party, and when I ask him for the ingredients for the polyjuice potion, he'll be able to easily find it. Harry shook his head, "Well, for the next Defence Against the Dark Arts lesson, I'll take a leave of absence and go to Snape's private storage room to steal these two materials." ”

"Harry, can I quit this project now? I don't want to sign the head office. ”

"No, I can't. Harry said, "You came up with the idea. ”

"Harry, I must have been demon-possessed when I came up with this idea. Ron looked at Harry, "Can't you really go back?"

―――――――――――――――――――――――――――――――――――――――――

"The compound decoction is ready. ”

In an abandoned Hogwarts bathroom, Harry and Ron were looking at the cauldron in front of them when they heard the bubbling, syrupy thick potion gurgling in the cauldron.

"It's incredible. Ron took a copy of the Potions Picture Book, flipped to the polyjuice potion page, and compared it to the potion in the cauldron in front of him. "You really did it, Harry, it took two days to make the polyjuice potion, how did you do it?"

"A little secret. Harry pulled out two flat glasses, "Are you ready?"

"What are we supposed to do?" Ron snapped into the glass, a little unsure, "Shall we just drink it?"

"We divide it into two cups and add the head in again. Harry plucked a few heads from his head and handed them to Ron, "I've asked Neville to borrow a few, he'll be in the dorm all night later, and no one will show up." ”

"Sounds seamless. ”

Har scooped up a large ball of decoction with a long-handled spoon and poured it into each glass. He then poured Neville's head out of the bottle into the first glass.

The decoction rattled loudly, like a pot of boiling water, and was foaming vigorously. After a second, it turns an unsightly yellow color.

Ron's face twitched unnaturally, "I guess it must be hard to eat." ”

"Alright, add yours. Harry said.

Ron put Harry's head in his cup. The cups all hissed, bubbled, and finally turned a black, dark brown.

"Are you ready?" Harry said, "Cheers." ”

"Cheers. Ron's hand holding the cup trembled.

"The polyjuice potion wasn't very tasty, but this time we had to drink it all at once, and the party would last about four hours, so we had to drink all of them, otherwise it wouldn't be good to go through the way. Harry stared at Ron, "Slughorn will definitely hold on to me, if you feel that the effect of the medicine is about to pass, just say that your stomach hurts and go to the bathroom, don't let Slughorn show me." ”

"Don't worry, I'm going to find a way to sneak out after I sign it, and I won't delay it until the effect of the drug has passed. ”

"That's for the best. ”

With that, Harry pinched his nose and swallowed the decoction in two gulps.

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