Mr Chen Yingning attaches great importance to and speaks highly of the essence of life. He said: "The Essence of Life" is the most suitable book. ..... From beginning to end, in an orderly way, all saints and immortals, all avenues and all formulas are included. Oh, and objectively analyzed the advantages and disadvantages of his reading methods and contents, and said: "The essence of life is quite penetrating and subtle in each of his theories." As for the various illustrations attached to the book, they are collected from all over the world and are insignificant. There is no need to study those small air guiding methods, which do more harm than good. The secret recipe should be found in the place that ordinary people who read "Gui Zhi of Life" are most likely to ignore. " (1) He also said: Life in Gui Zhi is extremely extensive and rich. The poems and songs quoted below each section really reveal the mystery of life. Although there are many small ways, they are inevitably flawed and ridiculous. However, those who are good at reading might as well go to the turnip and save the cyanine. "(2)" Life of Gui Zhi "is beautifully drawn, and it has never been as good as Taoist books, so it is called" Hundred Kinds of Collected Taoist Abstracts "and has been collected in nine volumes. Taiwan Province Province and Xiao's "Outline of Taoist Health Preservation" listed Jushu as the Inner Dan School.