It has always impressed me, the level of respect the Koreans have for their elders. My o/h befriended a young Korean man in his College class a few years ago. When we met them for dinner, they gave us a beautiful orchid, as well as home-made kimchi. Younger Koreans in our building always run to open doors and elevators for their seniors.
I see that respect in the video JonSR77 posted. It isn't just because the young men are in the presence of President Biden - it is bred into them.