• 日(sun; day)
• 寸(inch; unit of measurement)

Time flows like the sun moving inch by inch across the sky.

• 穴(row; gap)
• 工(craftsman; work)

An empty cave with nothing inside is just hollow space.

• 穴(hole; gap)
• 牙(tooth)

Use your teeth to bite through a cave or hole – that's how to remember the character for piercing through.

• 走(run; go)
• 戉(axe)

Running fast like swinging an axe, crossing every boundary, means to overcome.

• 日(sun; day)
• 寸(inch; unit of measurement)

Time flows like the sun moving inch by inch across the sky.

• 穴(row; gap)
• 工(craftsman; work)

An empty cave with nothing inside is just hollow space.

• 穴(hole; gap)
• 牙(tooth)

Use your teeth to bite through a cave or hole – that's how to remember the character for piercing through.

• 走(run; go)
• 戉(axe)

Running fast like swinging an axe, crossing every boundary, means to overcome.