圆屋顶

• 囗(encircling ring; surrounding loop)RADICAL
• 员(member)PHONETIC

A circle is a shape that is completely enclosed and closed like a member held within embracing arms.

• 尸(roof; body (pictographic))RADICAL
• 至(arrive at; reach)PHONO-SEMANTIC

A house is where a roof shelters and welcomes people returning home.

• 頁(head; page)RADICAL
• 丁(nail)PHONETIC

The head points like a nail driven straight into the highest part of the body.