銅牆鐵壁 tóng qiáng tiě bì

copper wall, iron bastion (idiom); impenetrable defense

Word data

HSK Not in HSK
Frequency Unknown

Definitions

  1. 1. copper wall, iron bastion (idiom); impenetrable defense

Characters

Character Meaning
銅 tóng
copper (chemistry); see also 红铜hóng tóng
牆 qiáng
wall; variant of 牆qiáng, wall
鐵 tiě
iron (metal); hard; strong
壁 bì HSK 5
wall; rampart