A fantasy post became a trending topic due to serious replies from netizens. As a late-night female editor, she also discovered this post after get off work. When she was about to write an article about it, she fell asleep early. When she woke up the next night, she became the messenger of regrets, regrets and wishes in these posts. She travels between 1999 and today, but even if you can successfully change, the result you get may not be what you want to see most now, and no one knows the ending...