xiān​shì

at first

先是 xiān​shì
at first adverb
Used to describe a situation or action that happened first, often followed by words like 后来 hòu​lái or 然后 rán​hòu in the next part of the sentence
before this
(literary) At an earlier time; previously. Often used at the beginning of a sentence when tracing back to past events.
former
Former; original; initial

Frequency

Movie subtitles
2.59 per million appears in 1% of films
Written text
16.4 per million

Sources