Hello My Noisy Mp3

The drama tells the story of Zhao Man'er, a superstar in her late 30s who accidentally received a mysterious MP3 and gained the ability to talk to herself 11 years ago in high school. She tried to change the past, and then changed her life, but the past unintentionally healed her.If you could go back in time, who would you like to meet? If you could know the "right answer" of youth, would you insist on your decision?