shū​xìn

letter

书信 (書信) shū​xìn
letter noun
a written message or piece of correspondence, typically sent by mail

In ancient times, letters were the main way for people to communicate over long distances.

Frequency

Movie subtitles
0.690 per million appears in 0% of films
Written text
3.27 per million

Sources

Definitions
CC-CEDICT