You Look Ugly When You Laugh Heartily

Dou Dou is a girl who yearns for love. She was single and met Yang Qingyu, who was also a physics major. Slowly she found that Yang Qingyu also liked her. Cai Rui had a crush on Yang Qingyu for many years and even went to the same university. There is no right or wrong in love, and there is no first come first served. Is it useful to persist so much?