Grindelwald's Instant Whisper

Nurmengard.

In the simple cell on the top floor, two old men sat facing each other across a worn-out little table.

The plates on the table had been cleared away, leaving only two glasses of cold tea and a plate of barely touched Bertie Bott's Every Flavour Beans.

At this moment, the two elderly people, whose combined age was over two hundred, were both bowing their heads, writing and drawing on the thin booklet with their fingers, just like children who had received a new toy.

Grindelwald sent a few messages, all meaningless text, as if testing whether the thing could actually be transmitted:

[Good evening]

Have you eaten?

[What are you doing]

Dumbledore didn't give a perfunctory reply; he answered each one carefully.

Grindelwald stroked his unkempt beard, a playful glint in his heterochromatic eyes.

"Quite an interesting alchemical tool." His voice held a rare, pure curiosity. "I didn't expect that kid to be so talented in Alchemy, able to learn and delve into everything, just like you..."

He paused, looked up at Dumbledore, and asked a crucial question:

"The effective range of this ' Instant Whisper ' must be quite large, right? Otherwise, using it only face-to-face would be too impractical."

Dumbledore put down the Instant Whisper he was holding, picked up the now-cold teacup, and took a sip. The tea was off-temperature, but he didn't seem to care.

According to Lucien, the maximum effective range for ensuring timely transmission of images and videos is currently one county.

Grindelwald was initially surprised that the alchemical tool could transmit images and videos, and wanted to ask how to use those functions—but upon hearing "a county," his pale eyebrows shot up sharply, and he almost blurted out:

"What if we only want to transmit text? What's the maximum distance?"

Dumbledore continued writing, his tone casual, as if he were talking about something trivial:

"For text-only communication, cross-border transmission is also possible. For example, from Hogwarts to Beauxbatons, the delay would be at most a few seconds."

Almost instantly, Grindelwald realized the significance of the thin book in his hands.

Fast, too fast.

The message traveled too fast.

Wizards typically rely on owls to deliver messages.

It takes anywhere from half a day to several days to receive a reply after a letter is sent out.

If the recipient lives in a remote area or encounters bad weather, it is common to wait for ten days or half a month.

In emergencies, messages might be transmitted more quickly Floo Network messaging system.

However, Floo Network requires access nodes, and not every location has a fireplace that can access Floo Network nodes.

During wartime, the Floo Network Floo Network be cut off from time to time, depending on whether it is controlled by one side or the enemy.

Other communication methods also have their own drawbacks.

Therefore, wizards are often limited by various conditions and are unable to send or receive messages in a timely manner.

A war can often collapse because a single order fails to be delivered in time.

And right now--

Grindelwald stared at the thin book in his hands.

Its thickness and size are such that it can easily be slipped into a pocket.

Portable, compact, independent of any external nodes, requires no fireplace, no relay, and no one's permission.

Grindelwald didn't care at all what impact Instant Whisper would have on the daily lives of wizards, whether the owls would lose their jobs, whether longing could be conveyed instantly, or whether young people would spend all day clutching this thin book and grinning like idiots...

Grindelwald was thinking of something else.

How effective is this timely communication during wartime?

He can issue commands more effectively, and the Acolytes can receive instructions more quickly, without having to wait for owls or the Floo Network to relay them.

Conversely, the front lines can also provide timely feedback on the battle situation, facilitating adjustments from the rear.

If a team is attacked, the news can reach headquarters within seconds; if a stronghold is breached, the order to retreat can be issued immediately.

A leader can simultaneously direct the actions of multiple teams, with complete control over the progress of each team.

The overall operational efficiency of the organization will experience a qualitative leap.

Those occupied areas will be under tighter control, as messages from every garrison point can be transmitted back in real time.

Enhancing the timeliness of intelligence communication is undoubtedly helpful in warfare.

During the Wizarding Wars, Grindelwald's forces had already conquered the Europe continent.

But as the territory expanded, a fatal flaw became increasingly apparent—a shortage of wizards and slow communication.

The battle lines were too long, and orders were delayed.

Often, the fighting on one side is already over, but the reinforcements on the other side haven't even received the message yet.

A troop was besieged and sent out a plea for help, but by the time reinforcements arrived, the battlefield had already changed hands.

If only I had the Instant Whisper ability at that moment...

Grindelwald's fingers tightened unconsciously around Instant Whisper, a complex light flashing in his heterochromatic eyes.

Such an important alchemical creation, invented by a mere junior wizard?

But this little wizard wasn't born a few decades earlier...