溜墙根

Traditional (Taiwan): 溜牆根

liūqiánggēn ㄌㄧㄡ ㄑㄧㄤˊ ㄍㄣ

    • to creep along by the wall
    • to act furtively

Character by character

Saying俗语俗語

Idiom惯用语 · Rarely used now

Literally
slip along the foot of the wall
Meaning
To creep along by the wall, acting furtively or suspiciously.

Sources