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