The wind at two o'clock in the morning, wrapped in the coolness of the autumn night, swept through the old alleys paved with bluestones, swirled on the faded light box of the "Yanheng Convenience Store", and made a "squeak" sound like it was about to fall apart. Song Yanheng squatted behind the cashier, picking at the peeling plastic skin on the counter with his fingers, and his ears were still buzzing with the aftertaste of the system prompt tone half an hour ago.