心如铁石
xīn​rú​tiě​shí

stony-hearted

xīn​rú​tiě​shí stony-hearted
  1. 心 xīn noun
    heart
    the physical organ that pumps blood; refers to the chest area where the heart is located
  2. 如 rú preposition
    to be like
    to be like; to be similar to; as if
  3. 铁石 鐵石 tiě​shí
    firm and solid
    something extremely firm or solid, often used metaphorically to describe a person's resolve or heart

xīn​rú​tiě​shí resolute
  1. 心 xīn noun
    intention
    purpose; motive; moral character or disposition
  2. 如 rú preposition
    to be like
    to be like; to be similar to; as if
  3. 铁石 鐵石 tiě​shí
    firm and solid
    something extremely firm or solid, often used metaphorically to describe a person's resolve or heart