Hans. (1986). "Wang Mang, the Restoration of the Han Dynasty, and Later Han", in The Cambridge History of China: Volume I: the Ch'in and Han Empires, 221 B.C. – A.D. 220. Edited by Denis Twitchett and Michael Loewe. Cambridge: Cambridge University Press. . Bin, Hansheng, "Liu Xin". Encyclopedia of China (Philosophy Edition), 1st ed. Crespigny, Rafe de. (2007). A Biographical Dictionary of Later Han to the Three Kingdoms (23-220 AD). Leiden: Koninklijke Brill. . Needham, Joseph (1986). Science and Civilization in China: Volume 3, Mathematics and the Sciences of the Heavens and the Earth. Taipei: Caves Books, Ltd. External links 50 BC births 23 deaths Year of birth uncertain 1st-century BC Chinese historians 1st-century BC Chinese people 1st-century BC mathematicians 1st-century Chinese people 1st-century Chinese historians 1st-century mathematicians 1st-century BC Chinese astronomers Ancient Chinese mathematicians Chinese Confucianists Chinese librarians Han dynasty historians Han dynasty politicians Suicides in the Han dynasty