Yu Tu is a character from the popular Chinese science fiction novel "The Wandering Earth," written by Liu Cixin. He is a skilled engineer who plays a crucial role in humanity's efforts to move the Earth away from an unstable sun. His character embodies themes of sacrifice, resilience, and the human spirit in the face of overwhelming challenges. In the story, Yu Tu works alongside a team of scientists and engineers to develop technology that can propel the Earth through space. The narrative explores the moral dilemmas and personal struggles faced by Yu Tu and his colleagues as they confront the potential extinction of humanity and the vastness of the universe.