夢寐以求

A dream; a vision or illusion experienced during sleep; to dream; to imagine or wish for something; a surname.

To sleep soundly; to be asleep; to slumber deeply.

to use; by means of; according to; in order to; because of; to consider as; to lead; to be able to; to make

To seek or look for; to request or demand; to beg or beseech; to desire or covet something; to attract or invite.