發邪火

Simplified: 发邪火

fāxiéhuǒ ㄈㄚ ㄒㄧㄝˊ ㄏㄨㄛˇ

    • to lose one's temper unexpectedly
    • to flare up for no clear reason

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
to give off an odd fire
Meaning
To lose one's temper unexpectedly or for unclear reasons. Mildly critical.

Sources