堅如磐石 [坚－－－]

Jyutping gin1 jyu4 pun4 sek6
Pinyin jiān rú pán shí

Definitions (CC-CEDICT)
  1. solid as a boulder (idiom); absolutely secure
  2. rock-firm and unyielding
Definitions (Wiktionary)
  1. phrase, idiomatic
    extremely firm or solid
    (syn.) 堅不可摧, 安如磐石, 坚不可摧