下逐客令　

◎ 下逐客令 xià zhúkèlìng

[ask an unwelcome guest or visitor to leave;show sb.the door] 谑语,指把客人赶走。战国时,秦始皇曾下令驱逐不是秦国人的客卿,后来就泛指赶走客人为下逐客令