付之东流

to commit to the waters (idiom); to lose sth irrevocably

surname Fu

to pay / to hand over to / classifier for pairs or sets of things

(possessive particle, literary equivalent of 的[de5]) / him / her / it

surname Dong

east / host (i.e. sitting on east side of guest) / landlord

to flow / to disseminate / to circulate or spread / to move or drift / to degenerate / to banish or send into exile / stream of water or sth resembling one / class, rate or grade