In the real world, she is Xun Hengzhou, a talented female scientist who is on the verge of death trying to find out the truth about her sister's death.
In the world of the novel, he became the youngest professor of brain science at the National University, the chief of the evolutionary faction, and the shadow brain of the rebels.
Gender switching is the first scar he has when traveling across dimensions, and it is also the first layer of skin he wears to perfectly disguise himself.
When the email from the future reveals the truth, and when the flames are about to burn out the false starry sky, Xun Hengzhou hides the answer in his final choice.
Concept: Given the initial state of the universe and the laws of physics, it is a foregone conclusion that the future will be the same as the past.