Only can we interpret this chapter by dint of glossology and thoughtway together, and discuss it under the frame of Mencius's theory of good humanity, we can find new clew to solve this question .
Not to mention other historical figures, within the Confucian school itself, there were Mencius and Xunzi in the pre-Qin period, and Zhu Xi, Cheng Yi, and Cheng Hao in the Southern Song Dynasty.