Keiko (390 BC-3 BC17), a native of Wyeth, was born in Song State (now Shangqiu, Henan Province) in the middle of the Warring States Period. A famous politician, thinker, philosopher, founder and main representative of famous school, and also a close friend of Zhuangzi.
Keiko was the most important organizer and supporter of the six countries during the Warring States Period. He advocated that Wei, Qi and Chu should unite against Qin, and suggested that Qi and Wei should respect each other as kings.
Liezi (about 450 BC-375 BC) was named Yukou, also known as Kou, and Ziyun, also known as Zhenkou. Representative figures of Taoism in the early Warring States period. Putian, a native of Zheng (now Zhengzhou, Henan), was born after Shan. About the same time as Zheng. One of the ten outstanding figures in pre-Qin Dynasty, Taoist, thinker, philosopher, writer and educator.
Liezi is an important inheritor of Taoist school between Laozi and Zhuangzi, and another representative of Taoist school besides Laozi and Zhuangzi. His knowledge originated from Huangdi and Laozi, and he advocated that inaction should belong to Laozi and Zhuangzi, and was respected as a predecessor by Taoism. The pre-Qin school of philosophy (Liezixue) was founded, which had a far-reaching influence on later philosophy, aesthetics, literature, science and technology, health preservation, music and religion.