夢寐以求 mèng mèi yǐ qiú

DEFINITIONS

  1. to yearn for sth even in one's dreams (idiom)
  2. to long for sth day and night

CHARACTERS

夢 mèng dream; visionary; wishful
寐 mèi sleep; be asleep
以 yǐ by means of; thereby, therefore; consider as; in order to
求 qiú seek; demand, request; beseech