"Yaya" is Jianjian's nickname for Yaya.
"Bianjian" is Yaya's nickname for Jianjian, although Yaya rarely calls Jianjian.
Yaya is a famous contemporary novelist, and Jianjian is the editor-in-chief of a fashion magazine. The two are living together.
The two people, who had been in the same dormitory for four years but had nothing to do with each other, happened during the winter vacation of their senior year that they would be entangled with from now on...