For the record, there are technological means to jump timelines,
but our information here deals with human consciousness, and how you, through the power of your own awareness and intention, can jump timelines.

I present to you all, my (possibly) superthread On how and why the Unknown God from Genshin Impact, and The Herrscher of Void/God Kiana/Sirin from Honkai Impact!

First off! We’ll start with the obvious things that constitute a possible connection.

They share the same Japanese Voice actress! Rie Kugimiya.
Usually this is a stretch reason, but considering everything else, it’s not unlikely that it’s the same character.

Secondly, their Appearances.
The both have very long white hair with identical bang style, and a very noticeable small piece of hair on top that curls upwards. That’s a defining part Of all of Kiana’s hairstyles, and for it to be shared with this god says something.

Another notable thing is their eyes. They both have Glowing golden eyes with very similar appearances. They contain a ring, and a 4-point star pupil. Resemblant of a scope if you will. That’s The Herrscher of Void’s defining characteristic

If you’d even like to take a look at their outfits, there’s resemblances including the black fur collar, the designs on the torso and chest, and the use of something similar to coat tails/skirt. The Herrscher can change their outfit and they aren’t stuck with one. Sirin does this

1/n
The kingdom of Sindh was ruled by its last Hindu king Raja Dahir during the 8th century. When Muhammad-bin-Qasim invaded Sindh, he decimated Sindh in his savage bloodlust. The chronicles of his advent are described in the Chachnama.

2/n
The Chachnama describes in detail how the Arabs led by butcher Qasim conquered Sindh. It tells the terrible tale of bravery, treachery, & carnage marking the entry of Islamic conquest of India’s Hindus.

3/n
When Muhammad-bin-Qasim attacked Sindh, Dahir had collected an army of 50,000 horses and marched from Brahamanabad to Rawar to face the invader. Qasim had an army that numbered in the tens of thousands with camels & horses.

4/n
Earlier Arab Alafis - Syeds from Prophet Mohammed’s own family had fled from Mecca with 500 men to Sindh and Raja Dahir had given them asylum. Trusting these Muslims would prove to be the fatal mistake for the downfall of Sindh & pave the way for Islamic invasion.

5/n
On an “auspicious day” in A.D. 711, fixed by astrologers, Mohammed Bin Qasim started for Sindh at the head of the Iraqi, Syrian, and other Arab soldiers. His horses and camels were disguised to look like lions and elephants. Rebel Jats also joined Qasim’s army.

So there's a class of puzzles called "river crossing puzzles" which involve having to cross a river on a boat/bridge containing some set of individuals/items with restrictions on which ones can be on the boat/left on each shore, right?

and the most common subclass of these problems is the one where you have 3 items/animals to cross with.
This is alternatively called the "fox, goose, and bag of beans" or "wolf, goat, and cabbage" puzzle.

the idea is that your boat can only carry one item at a time, but if you leave the wolf/fox unattended with the goat/goose, the wolf/fox will eat the goat/goose.
and similarly, the goose/goat will eat the beans/cabbage if left alone

so you have to set up a set of actions that never leaves either side of the river in one of the lose-states.

the solution to this variant being:
1. take the goat/goose over
2. return empty
3. take the wolf/fox over
4. return with the goat/goose
5. take the cabbage/beans over
6. return empty
7. take the goat/goose over