(483-402 BC), Zi Zisi, a native of Lu, was the grandson of Confucius and the son of Confucius. Born in the thirty-seventh year of Zhou (483 BC), he died in the twenty-fourth year of Zhou Weilie (402 BC) at the age of 82.

A famous thinker in the Spring and Autumn Period. Educated by Zeng Shen, the great-grandfather of Confucius, Confucius' thoughts and theories were passed on from Zeng Shen to Zi Si, and Zi Si's disciples to Mencius. Later generations called Zisi and Mencius the school of thought and Mencius, so Zisi inherited Zeng Shen, enlightened Mencius and played an important role in the inheritance of Confucius and Mencius' "Tao". Biography of Mencius and Xun Qing in Historical Records claims that Mencius is a student of Zisi, and Mencius copybook claims that Mencius is a student of Zisi.

The way of neutralization

Zisi's thought has some metaphysical characteristics, but it also has dialectical thinking. The way of neutralization starts from the standpoint of opposing the transformation of contradictions, attaches importance to the interdependence between opposites and attaches importance to (and greatly exaggerates) the role of identity in the development of contradictions. It advocates philosophical identity and is a fragment of dialectics.