Etymology

• From the proverb:
  一粒老鼠屎，壞了一鍋粥 [MSC, trad.]
  一粒老鼠屎，坏了一锅粥 [MSC, simp.]

  yī lì lǎoshǔshǐ, huài le yī guō zhōu [Pinyin]

  One piece of mouse excrement spoiled one (whole) pot of rice congee.

Pronunciation