铜墙铁壁 tóng qiáng tiě bì

copper wall, iron bastion (idiom); impenetrable defense

Word data

HSK Not in HSK
Frequency 47657th word

Definitions

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

Characters

Character Meaning
铜 tóng HSK 6
copper (chemistry); see also 红铜hóng tóng
墙 qiáng HSK 5
wall; variant of 牆qiáng, wall
铁 tiě HSK 3
iron (metal); hard; strong
壁 bì HSK 5
wall; rampart