That is, the clerk and female customers in that supermarket belong to the ambiguous period of youth. Besides, men and women are attracted to each other, so when the girls came to buy things, the boys gave the girls electricity, and the girls bought two xylitol, and finally left one on purpose. Then the boy said: Hello, you Yida, and the girl responded: You Yida!
Of course, this meaning is very clear, that is to say, she has a good impression on him. We might as well think that the girl actually lives near that small convenience store and has always been optimistic about the male clerk! Ha ha!