Correct

信函

/ xìnhán / 
Strokes

Definition

letter/piece of correspondence (incl. email)

Example

As a Noun

letter; correspondence

1
Xúnjià
询价
xìnhán
信函

letter of inquiry

2
Sīrén
私人
xìnhán
信函

personal correspondence; private letter

3
Shāngyè
商业
xìnhán
信函

business letter

4
Diànzǐ
电子
xìnhán
信函

electronic mail; email

5
Xìnhán
信函
wǎnglái
往来

exchange of letters

6
Kǒushòu
口授
xìnhán
信函

dictate a letter