Wo Ceng Ai Guo Ni, Xiang Qi Jiu Xin Suan 曾爱过你，想起就心酸 is a 30-episode TV series adapted from a novel of the same name written by Zi You Ji Guang 自由极光.
Jang Dong Gun and Tina Tang Yixin work their 18-year gap to their advantage as they play an established businessman and a college student.
This unassuming romance drama caught my eye because it stars freaking Jang Dong Gun, A-list actor, top endorsor in Korea and the list goes on. I'm glad that Tina Tang Yixin is moving up the ranks to become a leading lady but honestly, my first thoughts on their OTP is that it's odd and second, that it might actually work.
For synopsis, cast and ratings, see 2016 best Chinese TV series.