Upper trigram
☷
Earth · Kun
Receptive yielding.
FamilyMother
ElementEarth
Hexagram 19 of 64
☷☱ Approach
Something favourable drawing nearer.
Lower trigram
☱
Lake · Dui
Joy and openness.
FamilyYoungest daughter
ElementMetal
The image
Earth above, Lake below.
Earth over Lake: receptive yielding meeting joy and openness.
That combination is the whole meaning of hexagram 19. Nothing about it is arbitrary — change either trigram and you get a different hexagram with a different reading, which is why the 64 form a system rather than a list.