give sb a thousand cuts; hack sb to pieces ? 黃世仁哪，黃世仁！ ～心不甘。(《白毛女》100) Landlord Huang—To be cut into pieces is too good for you!/不，比畜牲還不如！ 非～不解恨哪！ (楊佩瑾《劍》83) They are worse than beasts!The only way for them to repay this is by a long slow painful death!
千刀萬剮qian dao wan gua
be hacked to pieces
千刀萬剮qiān dāo wàn ɡuǎ
剮：封建時代的一種酷刑，把人的身體割成許多塊。多是因仇恨他人而說的咒語。tear sb. to pieces, hack sb. to pieces, cut sb. into pieces