xiān​qī

in advance

先期 xiān​qī
in advance adverb
the time before a certain date; beforehand

Members of the delegation arrived in advance yesterday.

initial period directional
the early, preliminary, or starting stage of a process or project

The project is still in the preliminary research stage.

Frequency

Movie subtitles
0.120 per million appears in 0% of films
Written text
3.77 per million

Sources

Definitions
CC-CEDICT