心如刀割

to feel as if having one's heart cut out (idiom) / to be torn with grief

heart / mind / intention / center / core / CL:顆|颗[ke1],個|个[ge4]

as / as if / such as

knife / blade / single-edged sword / cutlass / CL:把[ba3] / (slang) dollar (loanword) / classifier for sets of one hundred sheets (of paper) / classifier for knife cuts or stabs

to cut / to cut apart