刀锯鼎镬

dāo jù dǐng huò

knife, saw and cauldron

ancient instruments of torture; fig. torture

刀

dāo

knife; blade; single-edged sword; cutlass (CL:把[ba3])

锯

jù

a saw (CL:把[ba3])

鼎

dǐng

ancient cooking cauldron with two looped handles and three or four legs

镬

huò

wok (dialect)