Lin Xiamu: A boy born in a Beijing Hutong in the summer of 1998 met the girl he loved most in his life, Qing Feng, on September 10, 2017. In 2027, he became a scientist and invented the space-time shuttle, which blocked the space-time shuttle he had successfully developed in five years, and also caused him to lose his favorite girl.
Qingfeng: A girl born in a small town in Jiangnan in the winter of 1998 met her favorite boy Lin Xiamu on September 10, 2017. She is proficient in traditional Chinese medicine, but she has never been able to cure her heart disease. The death of her parents left an indelible shadow on her.
Yang Yiyu: Qingfeng's junior high school classmate, Lin Xiamu's love rival, multiple personality patient
An Xiaoyan: The daughter of a friend of Lin Xiamu's parents wants to marry Lin Xiamu. Even at work, she is Lin Xiamu's assistant. The only word in her world is "Lin Xiamu"