Ye Zhetai — Physicist, professor at Tsinghua University
Shao Lin — Physicist, Ye Zhetai’s wife
Ye Wenjie — Astrophysicist, daughter of Ye Zhetai
Ye Wenxue — Ye Wenjie’s sister, a Red Guard
Lei Zhicheng — Political commissar at Red Coast Base
Yang Weining — Chief engineer at Red Coast Base, once a student of Ye Zhetai
Yang Dong — String theorist and daughter of Ye Wenjie and Yang Weining
Ding Yi — Theoretical physicist, Yang Dong’s boyfriend
Wang Miao — Nanomaterials researcher
Shi Qiang — Police detective, nicknamed Da Shi
Chang Weisi — Major-general of the People’s Liberation Army
Shen Yufei — Japanese physicist and member of the Frontiers of Science
Wei Cheng — Math prodigy and recluse, Shen Yufei’s husband
Pan Han — Biologist, friend/acquaintance of Shen Yufei and Wei Cheng, and member of the Frontiers of Science
Sha Ruishan — Astronomer, one of Ye Wenjie’s students
Mike Evans — Scion of an oil magnate
Colonel Stanton — U.S. Marine Corps, commander of Operation Guzheng