dạ Sở, bụng Tần

Definition
  1. Idiom:
    • A fickle heart; shifting allegiance: This idiom describes a person whose loyalty changes unpredictably, likened to switching allegiance between the two rival ancient Chinese states of Qin and Chu.
    • To be two-faced; to be opportunistic: It characterizes someone who is inconsistent, serving or supporting opposing sides for personal gain.
Usage Examples
  • Idiom:
    • Anh ta đúng kẻ dạ Sở, bụng Tần, không thể tin tưởng được. (He is truly a person of fickle loyalty; he cannot be trusted.)
    • Trong cuộc tranh cử, ông ấy bị chỉ trích dạ Sở, bụng Tần. (During the election, he was criticized for being two-faced.)
Advanced Usage
  • This idiom is used in formal or literary contexts to criticize moral or political inconstancy. It implies a deep betrayal of trust or principle, not merely a casual change of mind.
Variants and Related Words
  • Ba phải (adj): Indecisive, wishy-washy; someone who agrees with everyone.
  • Cơ hội (adj): Opportunistic.
  • Trở mặt (v): To turn one's back on someone; to betray.
Synonyms
  • Fickle: Changing frequently, especially regarding loyalties.
  • Two-faced: Insincere and deceitful.
  • Opportunistic: Exploiting immediate circumstances, especially with little regard for principles.
Related Idioms
  • Đứng núi này trông núi nọ: Literally "to stand on this mountain and gaze at that mountain"; meaning to be never satisfied with what one has, always looking for something better.
  • Lòng lang dạ thú: Literally "the heart of a wolf, the stomach of a beast"; meaning to be cruel and inhuman.