划清界线
huà​qīng​jiè​xiàn

to draw a clear line

划清界线 劃清界線 huà​qīng​jiè​xiàn
to draw a clear line
To clearly define a boundary or territory
to make a clean break
To distance oneself from someone or something; to sever ties or relations and refuse to be involved
to make a clear distinction
To make a clear class distinction (often used in political contexts)