Avada Point Defense Cannon

The Hogwarts Great Hall was sparsely populated on Saturday morning, as most students had no classes and chose to sleep in.

Harry and Ron were discussing the Gringotts break-in they had witnessed at Hagrid's hut the previous day.

A snowy owl carrying a letter flew in through the window towards Harry Potter.

"Hedwig." Harry wondered who had written to him and was about to reach out to catch the letter.

Unexpectedly, the snowy owl flew directly over his head towards Horatio, who was not far away, and gave him a disdainful look.

"Isis." Horatio caught the snowy owl, took the red letter from its leg, petted Isis's head, and then gave Harry a disdainful look.

Harry awkwardly withdrew his hand and turned his head, only to find another snowy owl standing on the table, looking at him with a mournful gaze.

After paying the price of some beef and getting pecked on the head a few times, Hedwig finally let Harry go.

On the other side, Neville saw the red letter in Horatio's hand and exclaimed, "That's a Howler! I suggest you'd better open it. Last time I forgot to open my grandmother's Howler, something terrifying happened."

Horatio remembered that Fleur had written to him a few days ago, inviting him to France to spend Christmas with her.

Horatio had replied, refusing her invitation. Perhaps the wording of his reply was not appropriate. It was all Snape's fault; he had learned to be sarcastic after spending so much time with him.

Snape, who was appraising gemstones in Myanmar, sneezed.

"Hmph, I'm afraid of her?" Horatio directly cast a Fiendfyre spell, burning the letter in front of Neville's astonished gaze.

After burning the letter, Horatio felt a chill down his back and shivered. "Hmph, I don't believe Fleur could kill me at Hogwarts."

Then Horatio sidled over to Harry and Ron and asked, "What were you two discussing just now? Were you gossiping about me?"

Harry and Ron quickly shook their heads. Who would dare gossip about this young master?

Harry then recounted to Horatio what they had discovered at Hagrid's hut the previous afternoon and produced the Daily Prophet he had "borrowed" from Hagrid.

Horatio glanced at the newspaper, which read:

"Latest Report on Gringotts Illegal Entry Incident

Investigations into the illegal entry at Gringotts are ongoing. Experts believe it was the work of an unknown dark wizard.

Goblin manager Zola of Gringotts stated that nothing was stolen. The underground vault searched by the intruders had actually been emptied earlier that day.

The Goblin in charge of Gringotts stated: 'We cannot disclose the contents of the vault. Please do not interfere in this matter.'"

"Damn it, I knew those Gringotts goblins were unreliable," Horatio slammed the newspaper onto the table. "No, I need to implement some defensive measures myself."

With that, Horatio rushed out.

Harry and Ron exchanged glances, helplessly continuing their breakfast.

In the afternoon, Harry encountered Hermione, who was looking for Horatio.

"Harry, have you seen Horatio? Professor McGonagall told me Horatio's detention isn't over yet, but I can't find him," Hermione said.

"No, but this morning..." Harry recounted the morning's events to Hermione.

Hermione pondered for a moment and said, "Perhaps we can get some clues from Hagrid."

So, Hermione and Harry went to Hagrid's hut together.

Upon arriving at Hagrid's hut, they found Horatio there. Hermione breathed a sigh of relief and took out a communication device, seemingly contacting someone.

Horatio handed Hagrid a key and a silver-white cube and said, "Hagrid, take this key and help me go to Gringotts Vault 9527. Place this cube inside the vault, then press the red button on it. Oh, and help me retrieve 2000 Galleons."

"Horatio!!! Do you know you have detention today?" Hermione shouted at Horatio.

"Detention? Don't be ridiculous. Today, I'd rather starve to death or be crushed by Galleons than go to detention," Horatio replied dismissively.

When he saw Harry Potter, who had come with Hermione, his eyes lit up. "Harry, I remember you have a vault at Gringotts too, right?"

Harry nodded. "Yes."

"See, Gringotts goblins are completely unreliable. We need to add some anti-theft measures ourselves," Horatio said. "I inquired beforehand; Gringotts allows customers to set up their own anti-theft measures."

He then took out another silver cube from his bag and showed it to Harry. "This is the anti-theft system I made myself. It only costs 1000 Galleons. Harry, you wouldn't want to become a pauper like Ron because your vault gets robbed, right? You wouldn't even be able to afford owl feed for Hedwig."

Harry looked at the silver cube and asked, "What is this thing? What does it do?"

"Good question. Now, allow me to grandly introduce this epoch-making product." Horatio pressed the red button on the cube.

The silver cube extended and transformed, eventually becoming a majestic and imposing point defense cannon.

Horatio ignored the stunned silence of the onlookers and continued, "This is the Terminator MK14 Avada Point Defense Cannon, developed by the newly established Quibble Group. It can fire Avada Kedavra rays at a rate of 4500 rounds per minute.

The accompanying soul identification system can effectively prevent friendly fire. Because it's soul identification, it can effectively prevent infiltrators disguised as friendlies, such as those using Polyjuice Potion. It currently supports up to 5 soul recording slots. Our company offers additional slot upgrades later, 100 Galleons per slot. Buy 10 and get one free.

If you don't want to use the Killing Curse, our company can also change it to the Imperius Curse, Cruciatus Curse, Stunning Spell, or Petrification Curse rays for free. Later, by becoming a VIP customer, you can upgrade to spells more advanced than the Killing Curse, but since you are not currently a VIP, you cannot view the detailed list.

It only requires one energy stone produced by our company annually to keep this machine working normally. Attack mode consumes one energy stone every 5 minutes. Energy stones are 10 Galleons each. Buy 5 and get one free.

In the face of this machine's powerful firepower, all I can say to the intruders is that you and your Shield Charm are equally laughable."

"Oh, that powerful? Then will my Transfiguration be useful?" a female voice sounded from behind Harry and Hermione.

Horatio didn't react and replied, "Currently, this machine is not equipped with an anti-magic spell system. However, customers can spend 500 Galleons to unlock our Sky Shield S03 Defense System..."

Horatio finally realized what was happening and looked at Professor McGonagall, who stood behind Hermione with a cold expression. He calmly put away the machine and patted Harry on the shoulder. "Haha, I was just kidding. This is just a toy."

"Mr. Horatio's toys are quite interesting. Could I borrow it?"

"No, no, this toy is just right for young wizards. For a professor like you, it's too childish."

"It's fine, my mental age is still that of a young wizard. Let me test the power of this toy, how about using you, Mr. Horatio?"

"Professor, you'll be sent to Azkaban..."