Suddenly Seventeen (2016)
Original title: 28岁未成年
Suddenly Seventeen is a 2016 Chinese-language comedy movie directed by Zhang Mo, with a running time of 1h 47m. It stars Ni Ni, Wallace Huo and Darren Wang.
When Liang Xia's obsession for a perfect wedding puts a strain in the relationship with her fiancé, he ultimately calls it quits and breaks up with her. In a heartbroken state, Liang Xia carelessly ingests a magical item, which transports the 28-year-old’s mind back to when she was only seventeen years old.