I cannot for the life of me pin down when this takes place, because I think they are talking at one point about the printing press from 1440 but also western medicine seems to be relatively advanced which came far later because it took quite a while for germ theory to catch on. But at what point would western medicine, the printing press, and an east Asian dynasty like this have existed at the same time without it being relatively recent (late 1700s-mid 1800s)?