Harry Potter: We are all descendants of our ninth uncle!

......

"For Santa's sake, I won't deduct points from you and force you to go to the Potions classroom to clean the cauldron! Remember, you are not allowed to use magic! You have to do it the Muggle way, using a rag, little by little, carefully. Clean all the cauldrons for me..."

"How about deducting points then? We're still waiting to attend the Christmas dinner!"

"Shut up Ron!"

Harry quickly grabbed Ron and apologized to Professor Snape:

"Okay professor, how about you stop deducting points after we wipe it clean?"

"Under my supervision, if you can pass the test, I will certainly not deduct points."

Professor Snape looked at Harry and Rowan in front of him and naturally guessed whose handiwork it was, but he still asked knowingly: "By the way, tell me, what on earth did you do to end up like this?"

"This is the punishment of our senior brother Li Xian."

Ron explained: "He said we didn't understand the rules!"

"He punishes very well!"

Professor Snape said with an expression of approval: "This punishment is too light! Go to the Potions classroom with me immediately and clean the cauldron!"

When Hermione arrived after hearing the news, she only saw the backs of Harry and Ron being taken away by Professor Snape.

Especially when you see their clothes...

"what's the situation?"

At this time, Li Xian appeared out of nowhere and said with a bad smile: "Professor McGonagall just taught me the experience of transfiguration. It mentioned the spell of changing clothes. It was very interesting. I couldn't help but take it. Two junior sisters, Li and Luo En, tried it out."

While talking, Li Xian handed over the finished transfiguration experience to Hermione, but Hermione saw through Li Xian who had been dormant here at a glance: "I think you did it on purpose."

"Do you want your experience? If not, I can take it!"

Li Xian pretended to take it away, but Hermione snatched it back immediately.

"If Professor McGonagall knew that you used the experience she taught you to conduct experiments on Gryffindor students, what do you think she would think?"

"He will praise me for my superb skills!"

Seeing Li Xian's mean look, Hermione suddenly became even more angry. She originally wanted to ask him to act together tonight and sneak into Slytherin... Now this idea has been completely abandoned. .

And Li Xian also unintentionally escaped from the fate of not interfering with the progress of the main plot...

But it made Hermione very anxious...seeing that night was falling, and when Harry and Ron came back missing...when Hermione decided to go directly to the Potions classroom.

Harry and Ron are finally back...

"Professor Snape let you go?"

Hermione looked at the two of them in disbelief. Their clothes had changed from Christmas maid outfits to Gryffindor uniforms.

Harry explained: "Well, after the effects of Maoshan Transformation and Wizard Transformation on us disappeared...Snape let us go."

Ron added on the side: "You said you hate us when you see us, but you ended up staring at us cleaning the crucible the whole time."

Hermione asked curiously: "Have you finished wiping the crucible?"

"How is this possible? So many crucibles? I can't clean them all in a year!"

Ron complained, but Harry said safely, "But fortunately Professor Snape didn't deduct twenty points from us!"

"Okay! It's almost time!"

Hermione said to Harry and Ron: "While most people in Slytherin are attending the Christmas dinner in the Great Hall, let's sneak in at this time."

Afterwards, the two went to the bathroom on the third floor where Myrtle often hung out. Hermione quickly brought out four cups of prepared polyjuice potion...

Ron asked with a puzzled look on his face: "Why four drinks?"

Hermione hesitated and explained, "I prepared an extra just in case."

Then they put the cup aside and put the hair of Goyle, Crabbe, and Milis they had prepared in advance.

As a result, Harry and Ron successfully transformed. As for Hermione, she hid in the bathroom stall and refused to come out. In desperation, Harry and Ron had to set off first.

Just after the two left...

A burst of cheap laughter penetrated into Hermione's ears, and Hermione was instantly alert.

"You are not allowed to come here!"

"Senior brother's medical skills are very good."

"I told you not to come over!"

"Do you want to be a cat forever?"

"How did you know I turned into a cat?"

Hermione looked surprised. Does Li Xian have any clairvoyance ability?

At this moment, Li Xian also discovered the remaining fourth cup of Polyjuice Potion. At this moment, he suddenly realized what he had missed unintentionally... He immediately secretly rejoiced, and then said to Hermione:

"Do you know why you made such a big mistake this time?"

Although Hermione was anxious to tell Li Xian to go away, she knew that Li Xian was imparting her experience at this time, so naturally she would not refuse.

Just listen to Li Xian explain:

"You are very smart, but you often overlook some small details. Is a cat's hair so thin and soft and so different from human hair? If you had paid a little attention, you would have been able to tell the difference... Why did you get it wrong? , turn yourself into a cat?”

When Hermione heard this, she immediately felt regretful.

That's right! Why did I neglect such a small detail?

Just when Hermione was grateful for Li Xian's reminder, senior brother Li Xian began to smile evilly again:

"Or do you Gryffindors all like to change into cats for free???"