mí​wù

fog

迷雾 (迷霧) mí​wù
fog noun
thick or dense fog that obscures visibility

The ship moved slowly through the thick mist.

mystery noun
a confusing or misleading situation that conceals the truth

The truth about the disappearance case is still shrouded in mystery.

Frequency

Movie subtitles
1.34 per million appears in 1% of films
Written text
2.17 per million

Sources

Definitions
CC-CEDICT