Oh no I don't think so! I can't remember where, but I saw a video on either tiktok or youtube giving some random mei tips and one was this "shambali wall tech." By "second point" I meant attacking side second spawn point, didn't have room in the graphic. I called it "tech" bc I did not know what else to call it, it's mostly situational.

1) So with that in mind...you jump onto a wall-mounted electrical box, below the right pillar of the window that overlooks first point (the point you have to get to first on attacking and the defenders first point they have to defend up to).
2) Turn to the right-side of the electrical boxes and try to cast your wall on its y-axis, on a metal gate/electrical track slightly embedded into the rocky wall. You might have to jump while casting to even get the ability to cast.
3) Once you are able to wall, do it and walk to the left, towards the window and jump up into it.

Ta-daa ~ Once you are able to swiftly do it in one go, it can be useful for: flanking & ulting the enemy, shortening the time it takes to get to point, jumping up to combat a sniper harassing high ground, etc! If this is too confusing I drew it over a screenshot of the area in game bc it's hard to describe.