空壳公司

• 穴(row; gap)RADICAL
• 工(craftsman; work)PHONETIC

An empty cave with nothing inside is just hollow space.

• 士(student; nobleman)RADICAL
• 冗(redundant; excessive)ASSOCIATIVE

A hard shell outside like armor covering excess wrapping around the kernel within.

• 八(eight; split in two)RADICAL
• 厶(private; personal)ASSOCIATIVE

Public means sharing your private things with everyone to become shared property.