Шан Ян
While Shen Buhai and Shen Dao's current may not have been hostile to Confucius, Shang Yang and Han Fei emphasize their rejection of past models as unverifiable if not useless ("what was appropriate for the early kings is not appropriate for modern rulers"). In the west, past scholars have argued that Shang Yang sought to establish the supremacy of what some have termed positive law at the expense of customary or "natural" law. Han Fei argued that the age of Li had given way to the age of Fa, with natural order giving way to social order and finally political order. Together with that of Xun Kuang, their sense of human progress and reason guided the Qin dynasty.