HSK C5
Correct

幽

/ yōu / 
Strokes

Definition

remote/hidden away/secluded/serene/peaceful/to imprison/in superstition indicates the underworld/ancient district spanning Liaonang and Hebei provinces

Example

As an Adjective
dim; gloomy
As an Adjective
deep and remote
As an Adjective
hidden; secret
As a Verb
imprison
As an Adjective
secret; hidden; bottled-up
As an Adjective
quiet; tranquil; serene
As a Noun
nether world