飘瓦虚舟 is an idiom

飘瓦虚舟piāo wǎ xū zhōu

比喻凭空加害于人而又无从追究的事物。

Origin 《庄子·达生》：“虽有忮心者不怨飘瓦。”《山木》：“方舟而济于河，有虚船来触舟，虽有惼心之人不怒。”

Word breakdown for “飘瓦虚舟”: Open in Reader →

飘飃HSK 7–9

variant of 飘[piāo]

飘飄HSK 7–9

1.to float (in the air); to flutter; to waft2.complacent; frivolous3.weak; shaky; wobbly

瓦HSK 7–9

1.roof tile2.abbr. for 瓦特[wǎ tè]

虚虛HSK 7–9

1.emptiness2.void3.abstract theory or guiding principles4.empty or unoccupied+6 more +7 more

boat