For a man like Zhang Yong, everyone who knows him can't help but wonder what the person he likes will be like, because he is too easy to classify. The girl he meets in the first month is different from the girl in the second month, and the girl in the second month is different from the girl in the third month.
For a woman like Wang Xin, anyone who knows her can't help but wonder what someone who likes her would be like, because she is really difficult to classify. The first impression is always different from the second impression, and the second impression is always different from the third impression.