走马灯

走马灯:

Literally means:

running horse lantern

Actually means:

It literally refers to a traditional fancy lantern. Once lightened up, the outsides of it may display some painted persons or horses moving without stop.

It figuratively means too frequent personnel reshuffling; carrying out a constant reshuffle of personnel. Slightly derogatory.

走马灯，一种供玩赏的灯，点了灯以后，灯的外表可以显示人、马等不断走动的景象。

比喻人员不断更换，或动作不断重复。略含贬义。