The Ye Family
Ye Zhetai (叶哲泰) – Physicist, professor at Tsinghua University, killed during a struggle session
Shao Lin (绍琳) – Physicist, Ye Zhetai's wife
Ye Wenjie (叶文洁) – Astrophysicist, daughter of Ye Zhetai, first person to establish contact with the Trisolarans, later spiritual leader of ETO
Ye Wenxue (叶文雪) – Ye Wenjie's younger sister, a Tsinghua High School student and a zealous Red Guard, killed during factional violence
Red Coast Base
Lei Zhicheng (雷志成) – Political commissar at Red Coast Base, who recruited Wenjie, later murdered by Ye
Yang Weining (杨卫宁) – Chief engineer at Red Coast Base, once a student of Ye Zhetai, later Ye Wenjie's husband, murdered by Ye