< Qingwei Daofa Hub > is a part of the large-scale collection of Daofa Huiyuan. "Daofa Huiyuan" is a 268-volume book, which was compiled in the late Yuan Dynasty and early Ming Dynasty. Its content is about Taoism of various schools in the Song and Yuan Dynasties, and it is included in the first edition of Orthodox Taoist Collection. The first volume is entitled "Qingwei Road and Law Hub", which includes several parts, such as "Law Sequence", "Road and Law Hub" and "Secrets of Qingwei Avenue". The content is to elaborate the summary of the law of Qingwei School, a new Taoist school in the Song Dynasty. The part of "Preface of Law" mainly discusses the relationship between "Tao" and "Law", holding that Tao is the body of law and law is the use of Tao, and saying: those who are well-informed are true, those who are well-informed are mysterious in change; Tao helps people because of the law, and people learn the Tao because of the law, so there are endless changes. It is also pointed out that the "thunder method" of the Qing school is a kind of magic that can calm and move the body of Tai Chi, and its mage is a person who is in harmony with heaven and earth and changes with Tai Chi. In the "Road and Law Hub" part of the sutra, it is further considered that there is a way in the road, a way in the road and a way in the law, and the "hub" of various roads and laws is described in detail. For example, the sutra says: "I don't know how to draw symbols, but it makes ghosts and gods laugh;" If you know how to draw, you will be scared to death. It is believed that the key to painting symbols lies in "sincerity" and "qi". The so-called "Qi" refers to the cultivation and application of "a little light" in the body, and the so-called "sincerity" refers to sincerity. "If sincerity fails, it will naturally fail." The part of "Secrets of Qingwei Avenue" lists in detail all kinds of specific ways of doing things by Qingwei School, as well as the basic norms and codes of conduct that people who study law should abide by. In a word, "Qingwei Daofa Hub" expounds the outline of Qingwei Daofa, which is the theoretical basis of Qingwei School. The core of Qing Wei's thought of sending thunder is "internal refining as the foundation and using the symbol". "Daofa Huiyuan", Volume I, "Qingwei Daofa Hub", and "Taoist Collection". Ren Jiyu, editor-in-chief: A Summary of Collected Taoist Scriptures (Beijing: China Social Sciences Press, 1991).