Hey guys, just checking in with a quick little post about some aspects of Korean etiquette~
Just as an additional comment, Koreans often if not always shake hands with one hand “under” the other. The reason being that long ago when 한복s (hanbok) were worn, the “pulling back” of the sleeve by putting one hand “under” the other was meant as a sign of respect and assurance that neither party was hiding anything (such as a weapon) under the sleeve. The partial exposure of the arm also denotes a degree of cleanliness and respect in terms of not hiding anything and not being shady out of respect for the receiving party.
Hope this helps!~