劈空扳害

• 刀(knife; blade)RADICAL
• 辟(open; develop)PHONO-SEMANTIC

A knife chopping forcefully splits an object in two to open it up.

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

An empty cave with nothing inside is just hollow space.

• 扌(hand; arm)RADICAL
• 反(flip; opposite)PHONO-SEMANTIC

Using your hand to flip something upside down is the action of bending or pulling.

• 宀(roof)RADICAL
• 丰(abundant; plentiful)PHONETIC
• 口(mouth; speech)ASSOCIATIVE

Under a roof, abundant speech can harm others.