serving the state of Qin in the morning and Chu in the evening; fickle; capricious; changing one's loyalties frequently. Derived from the Warring States period when smaller states shifted alliances between the states of Qin and Chu based on self-interest
to lead a wandering life
to travel constantly from place to place without a fixed home. Literally "in the state of Qin in the morning and the state of Chu by evening"