空无所有

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

An empty cave with nothing inside is just hollow space.

• 一(one; initial)ASSOCIATIVE
• 尢(disabled person; insufficient)ASSOCIATIVE

From the beginning there was a shortage, so 無 means 'nothing at all'.

• 户(door; house)RADICAL
• 斤(axe)PHONETIC

A place is where a house door stands, using an axe to chop and erect a tree.

• 月(moon; flesh (iconic representation))RADICAL
• 又(right hand; again)ASSOCIATIVE

A hand holding a piece of meat — that is 'to have'.