zhāo qín mù chǔ
serve Qin in the morning Chu in the evening (idiom); quick to switch sides
朝
zhāo
morning
秦
qín
short name for 陝西|陕西[Shan3 xi1]
暮
mù
evening
楚
chǔ
abbr. for Hubei 湖北省[Hu2 bei3 Sheng3] and Hunan 湖南省[Hu2 nan2 Sheng3] provinces together