长流水，不断线

• 长(long hair; old person (pictographic))ASSOCIATIVE

An old person with long hair cascading down symbolizes something lasting a long time.

• 氵(water)RADICAL
• 㐬(swirling flow; whirlpool)PHONETIC

Water flowing in a whirlpool becomes a stream, which is the circulation of water.

• 水(water (pictographic))ASSOCIATIVE

Water mimics the flow of running water with ripples on both sides.

• 不(no; not; negation)ASSOCIATIVE

A bird flying swiftly upward and never willing to return represents the meaning of swift and unyielding.

• 米(grain; thread (symbolizing something cut))ASSOCIATIVE
• 斤(axe; chopping tool)PHONO-SEMANTIC

Using an axe to chop and sever threads — the image of breaking or cutting off.

• 糸(thread; silk)RADICAL
• 泉(stream; water)PHONETIC

A thin thread flows like a small stream running long and continuously.