朝秦暮楚　

◎ 朝秦暮楚 zhāoqín-mùchǔ

(1) [serve the State of Qin in the morning and the State of Chu in the evening—quick to switch sides]∶时而倾向秦国,时而倾向楚国,比喻反复无常

(2) [indefinite]∶早上在秦国,晚上在楚国,比喻行踪不定