Centuries, but not too many, cased on the rate of decay. I am at the least familiar with water damage in - [Pause, so his words aren't totally drowned out by a particular loud boom of thunder.] - similar settings.

There are a number of mechanisms and relics in Teyvat that require no human input in their operation, but most of the ones I'm familiar with use the natural energy of the world instead - the motion of the tides and so forth. I cannot say I have ever encountered something like this, either.

[He doesn't seem to especially like it, either.]