'Dear Loved' is a novel. The plot and character development are fictional and should not be taken as a reference to reality. The speed problem between Mi Shaofei and Yaya in the novel was set up to better portray their personality characteristics and the progress of their relationship. In the novels, their speed was usually because they were chasing each other or because they had some special skill or equipment that made them faster than others. Although speed is an important element in a novel, it should not affect our perception and judgment of the real world. In real life, everyone's speed is limited by various physical and physiological restrictions, as well as traffic rules and laws. Therefore, we should not think that the speed in the novel is possible or reasonable in reality.