回邮信封 huí yóu xìn fēng

DEFINITIONS

  1. self-addressed stamped envelope (SASE)

CHARACTERS

回 huí
HSK 1
return, turn around; a time
邮 yóu
HSK 3
postal, mail; post office
信 xìn
HSK 3
trust, believe; letter
封 fēng
HSK 4
letter, envelope; feudal