走後門

Simplified: 走后门

zǒuhòumén ㄗㄡˇ ㄏㄡˋ ㄇㄣˊ

    • to enter through the back door

      lit.

    • to pull strings to use connections

      fig.

    • (slang) to have anal sex

      fig.

Character by character

Saying俗语俗語

Idiom惯用语 · In everyday use

Literally
go in by the back door
Meaning
To get something by improper means through personal connections. Critical; like 'pull strings'.

Sources