Bitner (1992) separated physical environment into three categories:(1)Ambient conditions, that is, the intangible background features in the environment, including background music,noise,temperature,lighting and odor etc., which would affect people’s perceptions;(2)Spatial layout and functionality. Spatial arrangement means the layout of mechanical equipments, facilities, furnitures and furnishings etc. as well as their spatial correlations;(3)Signs,symbols and artifacts, that is, signboards used for communicating with customers directly or indirectly and the decorations/designs for store image.