打接應

Simplified: 打接应

dǎjiēyìng ㄉㄚˇ ㄐㄧㄝ ㄧㄥˋ

    • to cooperate and back each other up
    • to give covering support

Character by character

Saying俗语俗語

Idiom惯用语 · Rarely used now

Literally
give covering support
Meaning
Originally to support the main force in a military action. Now it means to cooperate and back each other up.

Sources