I had a coworker who grew up in north china (jilin), he said during elementary school (late 90s) he had class field trips to north Korea -- the trips made him to appreciate home a lot. I think he mentioned there was no running water/sewage or something.
He described how moving to the US made him realize how far underdeveloped China was (especially his region), which was wild for him because he thought he was comparably well-off