"If you were given a chance, would you choose to go to the future or go back to the past?"
Chang Xin's choices for the first twenty years of her life were always the former. She couldn't help but think, what if she really went back to the past, could all the things she missed really be made up for?
Purpose: Don't look back on the past. It's better to do the things in front of you than to dwell on the futility of the future.