Mencius (372- 289 BC) was born in Zou (now Zouxian County, Shandong Province) in the middle of the Warring States Period, not far from Confucius' hometown Qufu. He is a famous thinker, politician, educator, the successor of Confucius' theory and an important representative of Confucianism. A student who lost his father since childhood, came from a poor family and was educated in Zisi. After finishing his studies, Mencius lobbied the governors as a scholar in an attempt to promote his own political views, and successively defected to Liang (Wei), Qi, Song, Teng and Lu. He inherited Confucius' thought of "benevolence" and developed it into the thought of "benevolent government", which was called "Yasheng" and "Confucius and Mencius" together with Confucius.
Mencius advocated "benevolence"; Advocating that the people are noble and the monarch is light; Advocate the theory of good nature;
Mencius advocated against unjust war;
His theoretical starting point is the theory of good nature, which puts forward "benevolent governance" and "kingly governance" and advocates rule by virtue.