Chapter 1: The Secret Messages application

Lei just left for Paris, and Shancai, despite her broken heart, is firmly decided to forget him.
Qinghe and Lizhen found something that might distract her at last: an application allowing people to talk with a secret pen pal! What if that stranger whom she was going to gradually confide herself wasn't that unfamiliar?
(freely inspired by the movie "You've got a mail")