宫内节育器

• 宀(roof)RADICAL
• 吕(phonetic pattern; burnt bone)PHONETIC

A palace is a large house with many rooms connected in succession like segments of bone.

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

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

• ⺮(bamboo)RADICAL
• 即(immediately; at once)PHONETIC

Burning bamboo segments reveals the joints that connect each section of the bamboo stalk.