dāng​shídàng​shí HSK2

then

当时 (當時) dāng​shí frequency
then time word
at that time; during the period of time previously mentioned or under consideration

I was in a meeting at that time, so I didn't answer your call.

当时 (當時) dàng​shí
immediately time word
at once or right away; on the spot

Upon hearing the good news, he immediately jumped for joy.

Frequency

Movie subtitles
206.7 per million appears in 49% of films
Written text
229.4 per million

Details

HSK 2.0
Level 4
HSK 3.0
Level 2

Sources

Definitions
CC-CEDICT