







铜城铁壁 is a Chinese idiom (chengyu) meaning “an impregnable defense”. An invincible stronghold; united as one. Literally, “copper city, iron wall”.

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Open the tool →铜城铁壁 (tóng chéng tiě bì) is a Chinese idiom (chengyu) meaning “an impregnable defense”.
铜城铁壁 is pronounced tóng chéng tiě bì in Mandarin Chinese.
Literally, 铜城铁壁 means “copper city, iron wall”. It is used to mean “an impregnable defense”.
原比喻防御十分坚固,不可摧毁。也比喻团结一致。同“铜墙铁壁”。