This treatise was written by Ji Un Sim in her thirties, who is working as a medical doctor in Hamgyong Province.

She has been engaged in research into the therapy for 17 years.

In the course she established new principles and methods for treating all diseases with help of the sole reflex therapy. In particular, she found out scientific points helpful to growing tall as much as possible.

On the basis of her successes gained in clinical practice, she authored the book "Knack of Sole Reflex Therapy".

The book, consisting of five chapters, deals with data on newly confirmed sole reflex parts, sole reflex therapy, diagnoses of diseases and knack of treatment, successes in the treatment for growing tall and treatment of various diseases by sole reflex therapy.