广告宣传

• 广(roof; shelter against cliff)ASSOCIATIVE

A roof leaning against a cliff provides shelter from rain and sun for people inside.

• 牛(cow; ox)ASSOCIATIVE
• 口(mouth; speech)RADICAL

Use your mouth to declare something like a cow's loud moo that carries far, so everyone hears it.

• 亻(person; man; human)RADICAL
• 专(specialized; dedicated)PHONETIC

A person who transmits knowledge must dedicate themselves to passing it on to others.