排長蛇陣

Simplified: 排长蛇阵

páichángshézhèn ㄆㄞˊ ㄔㄤˊ ㄕㄜˊ ㄓㄣˋ

    • to queue in a very long line

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
form a long snake formation
Meaning
To stand in a very long queue.

Sources