Correct
铜墙铁壁
/ tóng qiáng tiě bì /
Strokes
Definition
copper wall, iron bastion (idiom); impenetrable defense
Example
Definition
bastion of iron—impregnable fortress
1
Wǒmen
我们
de
的
zhèngquán
政权
shì
是
láobùkěpò
牢不可破
de
的
tóngqiángtiěbì
铜墙铁壁
。
Our political power is truly an impregnable bastion of iron.