Guan Zhong
When Confucius's students criticized Guan Zhong as lacking propriety, crediting his ambition and achievement Confucius said of him that "It was due to Guan Zhong that Duke Huan was able to assemble the feudal lords on numerous occasions without resorting to the use of his war chariots. Such was his goodness! ... Through having Guan Zhong as his minister Duke Huan became protector over the feudal lords. He brought unity and order to the entire realm so that even today people enjoy his gifts to them ... I am afraid that without Guan Zhong we would be folding our lapels right-over-left (traditional Chinese clothing customarily is folded left-over-right)." The students of Confucius also posted a question whether Guan Zhong followed "Ren" or not. However, in pre-Qin period, "Ren" has a distinctive utilitarian definition. Hence, from this point, Guan Zhong followed "Ren".