Correct
瞬息
/ shùnxī /
Strokes
Definition
in a flash/twinkling/ephemeral
Example
As a Noun
twinkle; twinkling
1
Shùnxīzhījiān
瞬息之间
in the twinkling of an eye; in the batting of an eyelid; in a twinkle/twinkling; for an instant; for one fleeting moment; in a flash