abstract:Liu Xin () (ca. 50 BC – AD 23),Cullen, Christopher (2007) Astronomy and Mathematics in Ancient China: The 'Zhou Bi Suan Jing' Cambridge, UK: Cambridge University Press later changed name to Liu Xiu (), courtesy name Zijun (), was a Chinese astronomer, historian, and editor during the Western Han Dynasty (206 BC-AD 9) and Xin Dynasty (AD 9–23).