In the blink of an eye, there was only a week left until September, and as the weather slowly cooled down, a letter from Hogwarts was delivered to Ivan accurately.

Ivan opened the envelope and looked inside, revealing a list of books needed for the next school year.

"Is school about to start?" Ivan put the letter aside and sighed.

The other day, he and Sirius had been searching the Berginbock store for an entire night, turning inside out and out, but not finding much.

For this reason, Ivan could only give up his plans to find Bock for the time being. After all, he doesn't know if the mastermind is still alive now.

So in the past few days, Ivan's energy has been focused on studying why the compound decoction suddenly failed.

The fact that the hair taken from the corpse of "Althea" can be incorporated into the polyjuice decoction and change a person's appearance proves that his previous thoughts and conclusions are not wrong.

What needs to be considered is how to solve the problem that the effect of compound decoction on dead people is extremely unstable, which is also the main cause of conflict.

After a period of research, Ivan discovered that there was only one way to solve this problem...

That is to improve the potion and make the effect of the compound decoction more stable!

It was undoubtedly very difficult, and Ivan had no experience with it, and he didn't even know where to start.

Fortunately, Ivan quickly remembered the research notes Snape left in "Advanced Potions Making", which not only recorded self-created spells such as Blade Shadowless, but more importantly, Snape's experience in researching and improving potions.

"Sir, it's time for dinner," Dobby cautiously reminded with a few plates on the round table beside him.

"Good!" Ivan nodded, flipped through Snape's notes, and sat down on a stool at the round table.

A moment later, a large black dog came running from a distance, and when it ran to the table, it instantly changed into its original form, and skillfully sat down opposite Ivan, grabbed a steak and stuffed it into his mouth.

Ivan didn't care, while he was busy researching how to improve the compound decoction these days, Sirius was not idle, and almost went out to listen to information whenever he was free.

Occasionally, Sirius would go outside the Leaky Cauldron, visit Harry from afar, or stop near the Burrow, and then come back every day when it was time for dinner.

"You're going to the Burrow again?" Ivan looked at Sirius's tired appearance, and considering that he didn't come back on time today, he quickly judged the whereabouts of the other party, frowned and continued.

"I should have told you that it was best not to go too far from there, for if you aroused Peter's vigilance and he escaped, you would never find him..."

"Don't worry, I'm just trying to make sure that the family has come back from the trip, and Peter is still not in the hands of that little wizard." Sirius grinned, his face a little hideous.

Today, when he walked around the Weasley mansion, he happened to meet the Weasleys who had returned from his trip, and he also saw the mouse in Ron's arms.

Peter was raised black and fat, unguarded, and seemed to be doing well.

Sirius almost couldn't hold back, trying to rush up and tear Peter to pieces...

"If only you had a good idea! If you kill him now, you'll never get away with it, think more about Harry..."Ivan reminded Sirius as he glanced at Sirius' hideous face.

Sirius nodded, quickly adjusting his mood.

What's more, he can't find a chance to kill Peter now, the Arthur Weasleys aren't that easy to mess with, sneaking into their house and getting caught by mistake will be over...

After finishing lunch in a hurry, Sirius noticed that Ivan, who had been holding a book in his hand, was somewhat helpless.

After these days, Sirius found that Ivan spent almost all of his time reading books and doing some strange potion experiments, and basically only rested for two or three hours a day.

Sirius opened his mouth, but he didn't know how to persuade him, and he guessed that Ivan was probably trying to rely on this intense study to forget the fact that Althea had died... But it can't go on like this!

"Is school at Hogwarts almost open? That's right, it's September..."Sirius's gaze swept over the letter that Ivan had thrown on the table, and his heart moved slightly, changing the subject.

"Hals, I remember that Hogwarts had to choose classes in the third year, right? Need some advice from me? ”

"In my opinion, divination, Muggle studies classes are of little use, divination requires a great talent for prophecy, and it is unlikely that a person without talent will learn these godly things.

Very little of what you learn in Muggle Studies is useful, so you don't have to waste time on it. I would suggest you learn about the ancient runes, it will be very helpful for you..."Sirius spoke eloquently to Ivan about his own experience.

He felt that since Ivan's parents were gone, if he had the ability, of course he would have to shoulder some elder responsibilities.

Ivan stopped flipping through the book, looked at Sirius, who was about to introduce him to the pros and cons of each class, shook his head, and interrupted.

"No, I'm not going to make a choice, I'm going to take every one of these classes!"

"Are you sure?" Sirius was stunned, looked at Ivan with a strange expression, and said something to stop.

"Hals, although the idea that you want to take more courses is worth encouraging, many useless courses will share your energy, not to mention that when you get the class schedule, you will know that many courses have conflicting class times!"

"I think the professors will find a way to solve the problem of curriculum conflicts." Ivan shook his head and didn't say much.

He made this decision, naturally, in order to get the time turner.

This kind of magical prop that can reverse time and space is very strictly guarded by the Ministry of Magic, and it is almost impossible for normal wizards to come into contact with this kind of thing.

Ivan didn't have the confidence to sneak into the Ministry of Magic and steal one.

Therefore, the best opportunity to obtain a time turner is to fill in all the courses when choosing a class in the third year, just like Hermione in the original plane, and ask a professor to apply for a time turner from the Ministry of Magic as a guarantee.

The Ministry of Magic would never turn down a young wizard who loved to learn, obeyed the law, and excelled.

He had just received the Order of Merlin, the highest honor in the wizarding world, last year, and I believe that the Ministry of Magic would still give him this face.