to the salesperson.The cashier will put the money ticket and the filled-out receipt onto a small tray, then push the tray hard. The tray slides along a wire track towards the cash register.The cashier...foot of the mountain.A thin, old man lay deep in the earthen house, sleeping on a straw-covered floor. Two broken bowls and a blackened aluminum pot sat beside him.Ning Yuan was stunned. She thought R...