不翼而飞

to disappear without trace / to vanish all of a sudden / to spread fast / to spread like wildfire

no; not so / (bound form) not; un-

surname Yi / alternative name for 絳|绛[Jiang4] capital of the Jin State during the Spring and Autumn Period (770-475 BC)

wing / area surrounding the bullseye of a target / to assist / one of the 28 constellations of Chinese astronomy / old variant of 翌

and / as well as / and so / but (not) / yet (not) / (indicates causal relation) / (indicates change of state) / (indicates contrast)

to fly