rú huǒ rú tú
like wildfire (idiom)
unstoppable
tú
thistle
common sowthistle (Sonchus oleraceus)
bitter (taste)
cruel
flowering grass in profusion
tú dú
torment
cruelty
great suffering
tú dú shēng líng
to torment the people (idiom)
Dá luó pí tú
Dravidian (general term for South Indian people and languages)
qiū tú mì wǎng
flowering autumn grass, fine net (idiom); fig. abundant and exacting punishments prescribed by law
shí tú wò jí
to eat bitter fruit and lie on thorns (idiom); to share the hard life of the common people