四海之内皆兄弟

• 囗(frame; surround)RADICAL
• 儿(person; foot)ASSOCIATIVE

Four sides of a square frame surround two legs — the ancient form of the number four.

• 氵(water; liquid)RADICAL
• 每(each; always)PHONO-SEMANTIC

The sea is a vast expanse of water that stretches boundlessly every day.

• 之(walk; arrive; step on ground)ASSOCIATIVE

A footstep moving forward on the ground represents "go to," which then becomes a grammatical particle.

• 冂(outer boundary; fence)RADICAL
• 入(enter; go in)ASSOCIATIVE

Inside a fence, something that has already gone in becomes what is enclosed.

• 比(compare; place side by side)ASSOCIATIVE
• 白(white; clear)RADICAL

When people stand beside each other to compare, all become equally clear.

• 弓(bow; arc (pictographic))RADICAL
• 丷(knot mark on bowstring)ASSOCIATIVE

A younger person stays tight like a drawn bowstring, following the hierarchy above and below.