家常便飯

Simplified: 家常便饭

jiāchángbiànfàn ㄐㄧㄚ ㄔㄤˊ ㄅㄧㄢˋ ㄈㄢˋ

    • simple home-style meal
    • common occurrence
    • nothing out of the ordinary

Character by character

Saying俗语俗語

Idiom惯用语 · In everyday use

Literally
home-style casual meal
Meaning
Something ordinary and routine that one meets or hears all the time, nothing unusual. Used casually, e.g. of setbacks or overtime work.

Sources