Is There a Cultural Importance of Problem Solving in Mathematics?

With russian math, exposition problems actually play a much more central role in the way that books are written. If it's really true, which is like how valued it is, presumably that might manifest into a more tactical answer about what specifically you do with your students once you value it. And then are there other ways that a this kind of cultural emphasis on the subject translates to a different way that it's learned? Notjs, different a emphasis on its importance?...