誓不两立

the two cannot exist together (idiom); irreconcilable differences / incompatible standpoints

oath / vow / to swear / to pledge

no; not so / (bound form) not; un-

two / both / some / a few / tael, unit of weight equal to 50 grams (modern) or 1⁄16 of a catty 斤[jin1] (old)

to coexist / coexistence

to stand / to set up / to establish / to lay down / to draw up / at once / immediately