国
=
囗
+
玉
:
Mnemonic symbol: a nation's flag. Let's say the Chinese flag.
In the observatory's kitchen (o2) Gitta Giraffe (gu) is practising her ballet performance. She got a whole crate (囗) full of jade bracelets (玉) and flags (国) and fixed one flag to each jade bracelet. This makes a perfect combination for throwing the ring with the flag waving behind it and catching the ring again after a few pirouettes.
border / edge / boundary / interval / between / inter- / to meet / time / occasion / to meet with (circumstances)
际
=
示
+
阝
:
Joan of Arc (ji) and the pope (阝) have an international (际) meeting in the space station's bathroom (Ø4). They decide on the border through the bathroom and mark their territories using standards (示).