Woxin question

[flemmings]

A couple of times in the course of the series people mention the names of several empire-destroying (or at least, king-distracting) beauties of old. This has to be in the first fifteen eps because I remember them from my rewatch, but nothing else about who or when (though I think once was Ya Yu talking about someone?) Does anyone remember who these beautiful women were or know anything about them? Google of course only knows the later Four Famous.