Fortune Telling Collection - Comprehensive fortune-telling - What book did Guiguzi write?

What book did Guiguzi write?

Guiguzi's main works are Guiguzi and Yin Fu Qi Jue. Guiguzi focuses on tactics and debating skills, while Yin Fu's seven methods in Benjing focus on ways to recuperate. The first three chapters of Yin Fu's seven techniques in this classic explain how to enrich the will and cultivate the spirit. The last four chapters discuss how to apply the inner spirit to the external world and how to deal with external things with the inner mind.