an ad in the bus station

This picture is an ad for Web English Education in Dalian, China. The picture was post in the board beside the bus stop in the city. I think this smile not only refers to employees (teachers and faculties in Web), but also refers to the customers (students in Weibo for English study). In China, people also focus more on service with a smile now than before. This company also emphasis that they could offer high quality teaching with positive attitude and hope their students also gain happy experiences during English study. I studied in Web for two months, and their teachers and faculties indeed service with a smile so that I was very glad to study there. Through my observation before, this ad was very attractive and many people noticed the board when they are waiting for the bus. When EL combine smile, the service becomes much more powerful and attractive.