zài​yú HSK4

lie in

在于 (在於) zài​yú
lie in verb
to consist in or be due to a particular attribute, factor, or essence

The key to success lies in persistent effort.

be up to verb
to be determined by or rest with a specific person or entity

Whether to go or not is entirely up to you.

Frequency

Movie subtitles
34.6 per million appears in 14% of films
Written text
84.2 per million

Details

HSK 2.0
Level 5
HSK 3.0
Level 4

Sources

Definitions
CC-CEDICT