Science Fiction || Book 3 in the Remembrance of Earth's Past series. Cheng Xin, an aerospace engineer from the early 21st century, awakens from hibernation 50 years after the Doomsday Battle. She brings with her knowledge of a long-forgotten program dating from the beginning of the Trisolar Crisis, and her very presence may upset the delicate balance between two worlds. Will humanity reach for the stars or die in its cradle?