沉到底

chéndàodǐ ㄔㄣˊ ㄉㄠˋ ㄉㄧˇ

    • to go deep into the grassroots level

Character by character

Saying俗语俗語

Idiom惯用语 · Rarely used now

Literally
to sink to the bottom
Meaning
To go deep into the grassroots level. Used of officials or workers. Approving.

Sources