Suddenly Seventeen(2016)

Suddenly Seventeen is a Chinese romantic comedy series that follows two adults who mysteriously revert to their 17-year-old selves and find themselves back on a high school campus. Liang Xia embraces carefree adolescence while Mao Liang clings to adult logic, creating constant friction and humor. As they navigate teenage life with their grown-up perspectives, the pair becomes determined to reshape the futures of those around them, guiding friends and classmates toward better paths. Balancing romance, comedy, and heartfelt moments, the series explores what happens when wisdom meets youth and how second chances can transform not just their own lives, but everyone they touch.