"Three Broadness: Parents' Lecture Hall: A Series of Lectures on Parents' Education" is the scientific research achievement of the research group "Parents' Education and Talent Growth" in Peking University. Readers can put this book "Three Widths: Parents' Lecture Hall: A Series of Lectures on Parents' Education for Xiao Yan and Yan Yan".

"Understanding Children", together with the previously published "Looking for the Lost Key —— Panoramic Report on Individualized Education in China" (written by Xiao and planned by Run, published by Xinhua Publishing House on 20 10), is regarded as a trilogy of parents' education written by Xiao and Run.

In this lecture series on "Three Tolerances: Parents' Lecture Hall: Little and Strict Parental Education", the author comprehensively expounded his educational philosophy, and unveiled the banner of his paternalistic education for the first time-calling on China parents to keep pace with the times and be "three tolerant" parents (generous, tolerant and relaxed).