打防疫针

Traditional (Taiwan): 打防疫針

dǎfángyìzhēn ㄉㄚˇ ㄈㄤˊ ㄧˋ ㄓㄣ

    • to warn people in advance so they are ready for bad news

Character by character

Saying俗语俗語

Idiom惯用语 · Rarely used now

Literally
to give a vaccination
Meaning
A variant of 打预防针: to warn people in advance so they are ready for bad news. Neutral.

Sources