bù yì ér fēi
to disappear without trace
to vanish all of a sudden; to spread fast; to spread like wildfire
不
bù
no; not so
翼
yì
alternative name for 絳|绛[Jiang4], the capital of the Jin State during the Spring and Autumn Period (770–475 BC)
而
ér
and
飞
fēi
to fly
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