to switch one's allegiance to a new patron; to improve one's family's social status by moving up in the world
门庭：比喻门第出身。指改变门第出身，提高社会地位。也比喻另择新主，另找依靠。
比喻另择新主，另找依靠。
老舍《四世同堂》九四：“如今长期失业在家，回英国府的希望越来越渺茫了，得早日改换门庭，另找洋主子才好。”
