Xun Kuang (; Chinese: 荀況; pinyin: Xún Kuàng [ɕy̌n kʰwâŋ]; c. 310 – c. 235 BC, alt. c. 314 – c. 217 BC), also widely known as Xunzi (; Chinese: 荀子; pinyin: Xúnzǐ; Wade–Giles: Hsün-tzu, "Master Xun"), was a Chinese Confucian philosopher who lived during the Warring States period and contributed to the Hundred Schools of Thought. A book known as the Xunzi is traditionally attributed to him. Xunzi's doctrines were influential in forming the official state doctrines of the Han dynasty, but his influence waned during the Tang dynasty relative to that of Mencius. He discusses figures ranging from Confucius, Mencius, and Zhuangzi, to Linguists Mozi, Hui Shi and Gongsun Long and "Legalists" Shen Buhai and Shen Dao. Xunzi mentions Laozi as a figure for the first time in early Chinese history, and makes use of Taoist terminology, though rejecting their doctrine.