I remember being blown away when I was in a Kyoto Familymart after a few months of living in Osaka after they handed me my fried chicken very delicately with both hands like it was a business card!

I guess that’s the cultural divide that occurs when one community is fishing and trading while the other does, like, competitive perfumed calligraphy or whatever.

Similar in Spain between Andalusia doing trades since forever across the whole Mediterranean Sea vs the inner provinces (the Castille-s) and the chilly Atlantic North regions with Celtic/Basque substrates.