zǔ
a stand for food at sacrifice
yuè zǔ dài páo
lit. to go beyond the sacrificial altar and take over the kitchen (idiom); fig. to exceed one's place and meddle in other people's affairs
to take matters into one's own hands
dāo zǔ
sacrificial knife and altar
zhé chōng zūn zǔ
lit. to stop the enemy at the banquet table
fig. to get the better of an enemy during diplomatic functions
rén wéi dāo zǔ , wǒ wéi yú ròu
lit. to be the meat on sb's chopping block (idiom)
fig. to be at sb's mercy