众志成城 zhòngzhì-chéngchéng unity of will is an impregnable stronghold
unity of will is an impregnable stronghold (idiom)
How to remember 众志成城: 众 multitude + 志 intention + 成 to become + 城 town = unity of will is an impregnable stronghold.
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How it is used
- Idiom: united wills form a fortress - collective unity makes an unbreakable force - 万众一心,众志成城 (wànzhòng yīxīn, zhòngzhì chéngchéng) all of one heart, unity is an impregnable wall.
- Inspirational; common in disaster-relief and national-solidarity rhetoric.
- 城 = city wall/fortress: the metaphor is that shared resolve builds an unassailable defense.