Felix smiled, "Anytime, Potter, I'll move in and keep you company temporarily. But I have to go back to school first to arrange some things. You can also think about your own schedule."

He stood up, "The special training will be very hard, Potter, be prepared. In my personal experience, the period after the magic riot is a great time to learn spells, and you will make rapid progress."

Harry agreed without any hesitation.

Felix found Tom, the owner of the Leaky Cauldron, a hunched-backed, wrinkled wizard. Under his suggestion, Felix chose room 12, which was next to Harry.

He waved to Harry standing at the stairs, turned and walked out of the bar, and returned to the office using the public fireplace.

He sorted out his recent work. In addition to trying to add the snooper to the course, he also came up with some good ideas. He rolled up these semi-finished plans and stuffed them into the ring.

Then, he looked at the observation record of the wand tree, which he and Professor Flitwick had to do every day, but this job would be handed over to Flitwick alone for the time being.

So he went to the office of the Professor of Charms and told Flitwick about his time conflict. The short professor quickly agreed. He smacked his lips and said, "The magic riot... I don't know what happened to Potter. With you by the child's side, Minerva will be relieved."

Felix then saw Snape in the school. He strode quickly, with his black robe fluttering behind him.

"Severus?" He greeted him: "You're back so early?" He knew that Snape would go home for the summer vacation every year, and usually return to school on the first day of school.

Snape frowned, suppressed his dissatisfaction and said: "You should ask our respected Headmaster Dumbledore. He called me back to make a disgusting potion."

He was in a bad mood at the moment, and threw off his cloak and slid away quickly.

What would the disgusting potion be? Felix looked at his back curiously.

Ten minutes later, Felix returned to Diagon Alley. He knocked on the door of Room 11 and saw that Harry's bed was piled with miscellaneous items, including textbooks, parchment, ink bottles, and a broom repair toolbox.

"Professor, I'm checking my homework. Well, I still have three History of Magic papers, two Potions papers, and one Charms paper to write."

"History of Magic..."

Harry clearly heard Professor Happ's disapproving hum, but the professor didn't say much. He sat down opposite him.

"Time is precious, Potter," Felix said, "I will guide you to complete your homework - in my spare time."

...

The owner of the Leaky Cauldron provided an empty basement. According to him, it has been abandoned for a long time.

Old Tom hunched his back and showed a toothless smile: "I remember there are still some protective magic here, but it may have failed. You need to deal with it yourself."

He snapped his fingers a few times, and the torches inserted in the wall lit up. Then he bowed and backed away.

Felix waved his wand to clean up the dust and cobwebs accumulated in the room. He also smoothed several broken floors. When his wand touched the floor, the ground undulated like the waves, and Harry seemed to be on a small boat, which reminded him of the first time Hagrid took him on a boat.

When everything was quiet, the wooden floor turned into an exotic carpet.

Harry walked back and forth a few steps, and it didn't feel as soft as he imagined. Professor Happ explained: "I can't make a few cushions so that you can practice magic comfortably."

Under his gaze, some small pieces flew out of Professor Happ's ring, and they jumped into a small square table, two armchairs, and some human-shaped targets.

At this moment, Felix was sitting on the chair, watching him behind the square table.

"Now, Potter, let's practice your best spell a hundred times."

Harry's hand holding the wand shook unnaturally, which seemed to be different from what he thought...

He thought that he would dodge the professor's attack in a panic, like a constantly jumping chipmunk, while Professor Happ calmly cast spells and showed his strength to the fullest.

But now, Professor Heppe acted like a scholar, sitting quietly in a chair. If he wore a pair of gold-rimmed glasses, he would look more like a teacher he saw in a Muggle school.

Harry looked at the target about seven or eight meters away from him. He waved his wand and shouted loudly: "Expelliarmus!" A red light flew out from the tip of the wand and hit the wall, but it was two feet away from the human-shaped target.

"Uh, sorry, I missed it."

"It doesn't matter, keep going."

So Harry waved his wand continuously, and red lights flew out one after another. After about half an hour, he shouted weakly in a hoarse voice: "Expelliarmus..." As a result, his wand only sprayed a string of sparks.

"Okay, let's stop for a while and come over here to sit." Felix said.

Harry walked tiredly to the other side of the square table and sat down. He looked at Professor Heppe opposite him, who was writing and drawing on parchment. After a while, he raised his head, "I already know enough about your spell. Very good, we have completed the first step of the test."

"Just a test?" Harry shouted in surprise. He was so tired that every cell in his body was crying out in pain.

Felix curled his lips and whispered in a seductive tone: "Potter, at your age, my understanding of the Disarming Spell is no less than that of an ordinary adult wizard, and you have the potential."

"In addition to the Disarming Spell, you yourself said that you are not proficient in the Shielding Spell."

"And the Tongue-Locking Spell, I can even teach you one or two simple and practical spells..."

Harry swallowed his saliva. With the help of the bright firelight in the basement, although it was a bit disrespectful, he felt that he saw the devil's smile.

But he had to admit that he was moved.

Professor Hep did not say what would happen if he learned these spells, but he could not help but imagine the admiration of his classmates, extra points in class, and perhaps the opportunity to show his abilities in front of the girl he liked...

He said with a trembling voice: "Professor, I will follow your arrangements." He felt that his tone was full of tragic and majestic, as if he was about to go to the execution ground.

Felix took out a piece of chocolate and handed it to him: "Eat something first, and then we will do the second test."

Ten minutes later.

Felix and Harry were seven or eight meters apart, facing each other.

"Potter, this time we are going to test the maximum power of your spells. You need to fully mobilize your emotions. Remember what we talked about in the dueling class? Determination, confidence, and most importantly, the disarming spell is to protect yourself and make the enemy lose the ability to hurt you."

Harry nodded, he took a deep breath, and imagined Malfoy standing opposite him. He suddenly turned into a giant monster with Perkin hair, waving a stick and walking towards him...

"Puff!" He suddenly laughed out loud, "Uh, sorry."

After brewing emotions for a while -

"Disarm you!"

Harry shouted hoarsely, and a finger-thick red light rushed straight towards Felix, but was stopped by an invisible barrier.

"Not enough, Potter, let me see your potential!" Felix encouraged.

Harry gritted his teeth and mobilized his magic with all his strength. At a certain moment, he really felt the difference. It was the "active magic" mentioned by Professor Hep. He silently chanted in his heart: disarm, make the enemy lose the ability to hurt me...

He thought of those real enemies, Professor Quirrell, the basilisk, and... Voldemort!

The red light trembled a few times and became as thin as a hair. Felix almost thought he had failed, but the next second, a burning beam flew out from Harry's wand, spanning seven or eight meters, and instantly hit Felix's Shield Charm.

The two spells wrestled in mid-air, and a low roar echoed in the basement.