Time travel was a common plot in novels. In fact, the scientific community was not completely sure about the existence of time travel. According to the current scientific knowledge, time and space were related. Time changes when we move or change our position. Therefore, we usually think that only certain events will happen in certain times and spaces. Although some of the time-travel scenes depicted in novels seemed very real, they were usually fictional storylines rather than scientific facts. Some of the methods described in novels, such as time travel, are usually achieved through some mysterious power or magic. These methods have not been confirmed by the scientific community. Therefore, traveling through time and space is still an unknown field. We need more scientific research and exploration to understand this field more deeply.