What's the difference between a rebirth novel and a transmigration novel?

Rebirth novels and time-travel novels were two common types of novels that involved the concept of time travel. However, the difference between rebirth novels and transmigration novels was: The protagonist of a rebirth novel usually returned to the past and changed the course of history to become a character from the past. The protagonists of rebirth novels were usually involved in historical events and then changed their fate through some means. The main plot of a rebirth novel revolved around how the protagonist adapted to his past life, how he played a role in historical events, and how he reconciled with his past self. The protagonist of the time-travel novel traveled through time and space to another world or historical stage in some way. The protagonists of time-travel novels were usually arranged by fate or changed the course of history and the development of the world through their own wisdom and courage. The main plot of the time-travel novel revolved around how the protagonist adapted to the new environment, how to play a role in the new world, and how to reconcile with the new world and his past self. Rebirth novels and time-travel novels were common types of novels in history, science fiction, fantasy, and other topics. The difference was that the protagonist's way of time-travel and the historical background were different, and the storyline was also different.