sentences:  Starting in the Spring and Autumn period (771–476/403 BC), a trend of "realistic" reformers were taken on to advance the material interest of their respective states, with the Qin state founding the first Chinese Empire, Qin dynasty in 221 BCE, ending China's Warring States period.The political theory developed during the era, including that of Confucianism would influence every dynasty thereafter.Those termed Legalist are more purely "Realpolitikal" in contrast to Confucianism and include non-legal Shen Pu-hai derived political technique, which charges the ruler engage in passive observation to determine facts rather than take on too much himself.