铜墙铁壁
tóngqiáng-tiěbìTraditional 銅牆鐵壁
impregnable fortress
Every meaning
tóngqiáng-tiěbì
- impregnable fortress
Its characters
Words with 铜
Words with 墙
Meanings from our own dictionary. Chengyu from the Xinhua idiom list, the most common first.
tóngqiáng-tiěbìTraditional 銅牆鐵壁
impregnable fortress
Meanings from our own dictionary. Chengyu from the Xinhua idiom list, the most common first.