三体问题

• 一(one; horizontal stroke)ASSOCIATIVE
• 二(two (pictograph – two horizontal strokes))ASSOCIATIVE

Three horizontal strokes stacked on top of each other symbolize the number three.

• 門(gate; door)PHONETIC
• 口(mouth; opening)RADICAL

Standing before a gate and calling out with your mouth is asking.

• 是(be; correct)PHONETIC
• 頁(page; head)RADICAL

A heading is the top part of a page that clearly states what the content is about.