嘴硬心软

• 口(mouth; opening)RADICAL
• 觜(beak; bill)PHONETIC

A person's mouth is like a bird's beak, used for eating and speaking.

• 石(stone; rock)RADICAL
• 更(change; firm)PHONO-SEMANTIC

Hard as stone, immovable and unchangeable.

• 心(heart (pictographic))ASSOCIATIVE

The character depicts a heart shape with three strokes like heartbeats, symbolizing the soul and emotions.

• 車(vehicle; carriage)RADICAL
• 欠(lacking; yawning)PHONETIC

A vehicle lacking rigidity becomes flexible.