[Textual research on the Wu zhi fang (Prescriptions of Five Hemorrhoids) of Ding Zhai, a lay Buddhist].

The book Wu zhi fang (Prescriptions of Five Hemorrhoids), included in the Bibliography of the Song Annals was claimed by later scholars as a book written by Dingzhai, the lay Buddhist. Parts of its contents are cited in Wei Xian's Wei shi jia cang fang (Collections of Prescriptions of the Wei Family). By the preface of the latter book, the prescriptions of the Wu zhi fang were derived from Li Yong-he, whose son passed these prescriptions to Ma Xing-si, who, in turn, gave them to Wei Xian's father Wei Xiong-meng. Wei Xiong-meng was familiar with a calligrapher of the Southern Song Dynasty Shan Wei, nicknamed Dingzhai, the lay Buddhist, who wrote the autobiography for Wei Xiong-meng. In addition to those collected in the Wei shi jia cang fang, there are also "Li Fangyu's Prescriptions for Five Hemorrhoids Secretly Handed Down" collected in the Mi chuan wai ke fang (Prescriptions for External Diseases Secretly Handed Down) of the Ming Dynasty which are also Li Yong-he's prescriptions for hemorrhoids, outnumbering those collected by the Wei shi jia cang fang.