穿西装的混小子穿长裙的傻姑娘
[chuān xī zhuāng de hùn xiăo zi chuān zhăng qún de shă gū niáng]
The name literally means 'a rogue in a suit, a foolish girl in a long dress'. It describes two contrasting characters. One acts in a seemingly sophisticated but rogue manner, while another might act innocent yet appears foolish.