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銅牆鐵壁

简铜墙铁壁 · 繁銅牆鐵壁

Mandarin · pinyin tóng qiáng tiě bì

copper wall, iron bastion (idiom); impenetrable defense

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Characters in this entry

銅: Look up this written character
牆: Look up this written character
鐵: Look up this written character
壁: bì · partition wall; walls of a house; 14th lunar mansion, determinative star γ Pegasi (Algenib)
铜: tóng · copper, brass, bronze
墙: qiáng · wall
铁: tiě · iron; strong, solid, firm

Written characters and their own readings; the entry’s pronunciation is shown above.

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Mandarin tones

2–2–3–4 · tong2 qiang2 tie3 bi4

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Read this spelling in Classical texts

Follow a written form into the eight pinned witnesses: Analects, Mencius, Laozi, Zhuangzi, Xunzi, Han Feizi, Sunzi and the Mao Shijing. A match is a place to investigate; it does not prove that a modern dictionary sense fits the passage.

銅牆鐵壁 · find source passages ↗ · 铜墙铁壁 · find source passages ↗

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Compare dictionary sources Wiktionary · 2 senses · 1 Cantonese reading

Rime Cantonese 粵拼

tung4 coeng4 tit3 bik1

Cantonese word readings for 銅牆鐵壁. This lexicon supplies readings, not definitions.

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Wiktionary English definitions · Chinese section

Independent source senses for this spelling, with usage labels retained. Not matched to the pronunciation above.

phrase

(idiomatic) impregnable and indestructible wall or barrier
(figuratively) something very firm and indestructible

Source page · dump 2026-09-02 · Contributors & history

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