Walking on eggshells

sɐɾʌɾɯmphɐnɯɫ ɡʌdtɐ seəɹɔːɹiːəm panjuːl dʒiːəʊtda

In Korean 살얼음판을 걷다 (Sareoreum paneul geotda)

This idiom means to walk on thin ice, implying a precarious situation.