In Chongqing and Yichang, cash can be used for payments at restaurants, taxis, and metro systems. Although mobile payments are widespread, cash remains legal tender, and in theory, all merchants cannot refuse it. High-speed rail ticket counters at Chongqing Station accept cash purchases—carry small-denomination banknotes for easier change. While mobile payments are more convenient in some scenarios, feel free to use both options flexibly during your trip.