There you have the basics of the Korean family structure.
An interesting cultural note: relationships have numeric “points.” There are zero “points” between a husband and wife. Between a parent and child there is one “point” of relationship. Brothers and sisters have a “two-point” relationship.
The relationship between a child and their father’s brother is a total of three points (one for the parent, two for the parent’s brother). This is reflected in the name for the unmarried paternal uncle,
which starts with the syllable 삼, Korean for “three.”