Gan, Why Did I Wake up and Become a Junior High School Student?

Wu Xiaochang, who was very dissatisfied with the current situation of his life, returned home sadly on the night of his thirtieth birthday. He thought he would go to work in pain and live in abjection as usual the next day. But she never expected that she would travel back to 15 years ago and live as her 15-year-old self. What kind of story would happen? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.