HP: Spirit Talker

No, of course it's not the Japanese technique itself — everything there is based on the principle of the "sleeping" ritual, which, when activated, creates the movement itself. In this case, there is some analogy, because both the lock and the passage and the door to the office were not in the... "not in the here and now" is the best explanation.

This is not a coiled space like a Mobius strip or a Klein bottle — their principle is used in the spatial folds that hide the estates of some ancient clans, Slant Lane, and almost all magical settlements. No, in this case the principle of shifting into one of the possibilities-probabilities of limited size or into another phase is used — I haven't fully figured it out yet, but it doesn't prevent me from easily finding such formations by looking at spiritual planes.

The castle in my vision looked like a ten-inch bowl with three wide rings around it, made up of many segmented cubes, all shimmering with light yellow, orange, and red tones.

When Potter used parseltang, the circles came in a circular motion, and some of the segments protruded slightly upward and some moved downward. I don't know how or if this lock can be broken, but I didn't want to mess around with it for long. Especially since there were three lines to the lock: one external, obviously feeding the structure, and two outgoing lines. In short, I simply closed the "contacts" by cutting the lock.

To be honest, I had my misgivings, but it all worked, thanks to the spirits, and the passageway manifested on the physical plane, and it looked like doors had appeared out of nowhere.

The guy was impressed. I could only see the point of connection to the real world and the castle, and I could only guess at the coiled space itself by the thread of the funnel going to "nowhere". It's much cooler than the Japanese version, which is pretty much hackable if you have location information (easily determined by some ritual anchors), lots of time, and magical abilities.

The room that opened before our eyes was quite large, divided into zones with several work tables, many shelves, four wooden boards similar to school boards on which you write with chalk (there was chalk here), but there were no tools for practical experiments. Obviously, the creator and owner of this place divided the places for theoretical and practical work competently, which made it stand out among many scientists.

I know from my own experience what surprises can happen during experiments, and it is no fun at all when an explosion destroys the records of the current experiment. I looked around and noticed the uninterested look of my interlocutor. Fool! This was the real treasure trove of one of the castle's artifact creators — the personal library and work diaries of Salazar Slytherin himself!

Any more or less adequate English wizard would go to any crime for the sake of this place, and Potter looks around with "duty" interest! Yes, there are no flashy artifacts here, no chests of gold and jewels. But here, in these cupboards, on the many shelves, in and on the tables, there is much more and much more valuable knowledge!

We spent the next few hours here. Potter wanted to leave and come back later, but I explained that I had broken the lock and the door wouldn't disappear, so we weren't the only ones with access.

To the reasonable question of who would show up here if only my counterpart spoke snake language, I replied, "Well, someone cut up a basilisk, leaving only the bones, so someone definitely has access here. Potter wasn't particularly eager, but he had to admit I was right, so we worked together.

He didn't know the spells for curses and potions, and I didn't want to teach him now — it would take too long and it wasn't easy, so he stayed away from the books and scrolls in the drawers and didn't touch anything else that looked suspicious. We took a quick look through the contents, methodically sorting what we found into different piles.

Unfortunately, all the literature was in different languages and dialects, and it was a good thing that most of it was in local dialects, though there were folios in Latin, in languages unknown to me, and even in Sanskrit and Parseltongue. Work records and laboratory journals were in Old English, more or less understandable even to me.

Other things were found, including a remarkably heavy ring with a large dark emerald in a velvet box, and a crystal box with a dozen vials of basilisk venom. And that's not counting the small cave where the Slytherin kept his most valuable tools and substances, and since the entire room was in stasis, it was no wonder everything was perfectly preserved.