撿洋落兒

Simplified: 捡洋落儿

jiǎnyánglàor ㄐㄧㄢˇ ㄧㄤˊ ㄌㄠˋㄦ

    • to get a windfall for nothing
    • to pick up a bargain

Saying俗语俗語

Idiom惯用语 · Rarely used now

Literally
pick up foreigners' leavings
Meaning
Originally taking spoils from foreign invaders; now getting a windfall for nothing. Mostly lighthearted.

Sources