固若金湯 gù ruò jīn tāng

DEFINITIONS

  1. secure as a city protected by a wall of metal and a moat of boiling water (idiom)
  2. well fortified
  3. invulnerable to attack

CHARACTERS

固 gù
HSK 5
to become solid, solidify; strength
若 ruò
HSK 6
if, supposing, assuming; similar
金 jīn
HSK 4
gold; metals in general; money
湯 tāng hot water; soup, gravy, broth