cut sb dead; regard as a stranger; treat sb like a stranger ? 他們畢竟是你的親人或熟人，你不要把他們～。After all they are your kinsfolk or acquaintances. You shouldnot have treated them as strangers.
視同路人shì tóng lù rén
把親人和熟人看得像不認識的人一樣。regard as a stranger, treat like a stranger, make a stranger of