线形图

• 糸(thread; silk)RADICAL
• 泉(stream; water)PHONETIC

A thin thread flows like a small stream running long and continuously.

• 开(open; mold; form)ASSOCIATIVE
• 彡(stroke; line)RADICAL

Shape is lines drawn on a frame opening before the eyes.

• 囗(surround; square frame)RADICAL
• 冬(winter)PHONETIC

A map is a frame enclosing all regions of land, and when read closely sounds like "dong" (winter).