说明 (shuō míng)

to explain; to illustrate; to indicate; to show; to prove; explanation

Character breakdown

说 (shuì) · 9 strokes

Phonosemantic compound. 讠 represents the meaning and 兑 represents the sound.
明 (Míng) · 8 strokes

The character was originally depicted moonlight (月) shining through a window (囧). The 囧 component was later reanalyzed as 日 (sun).