Seven doctors come from all over the world and together form the Human Genome Research Institute. The research direction of the seven doctors is: the stripping and synthesis of perfect genes. Xiao Qi is the only half-finished perfect human being successfully cultivated by Doctor Seven. The only shortcoming is that he has no emotions. In order to help Xiao Qi experience feelings, Doctor Seven created a space device to send Xiao Qi's soul into various parallel spaces, allowing Xiao Qi to learn the word love by using the bodies of others.
Announcement to the world: The author is too lazy to think of names. For the sake of convenience, from the second world onwards, Xiao Qi is called Song Qing, and the target of the strategy is called Yin Ri.