Lieh Tzu

Lie Yukou (列圄寇/列禦寇, fl. ca. 400 BCE) is considered the author of the Daoist book Liezi, which uses his honorific name Liezi (列子; Lieh-tzu; literally: "Master Lie"). Lie Yukou was born in the State of Zheng, near today's Zhengzhou, Henan Province.

There is little historical evidence of Lie Yukou as a Hundred Schools of Thought philosopher during the Warring States period. This could be due to the burning of books and burying of scholars which occurred during the reign of Qin Shi Huang. However, some scholars believe that the Zhuangzi invented him as a Daoist exemplar.