Yanjitu 研幾圖 "Charts of detailed investigation" is a book on Neo-Confucian philosophy attributed to Wang Bai 王柏 (1197-1274), courtesy name Huizhi 會之, style Changxiao 長嘯 or Luzhai 魯齋, from Jinhua 金华 in the prefecture of Wuzhou 婺州 (today Zhejiang province), who wrote two critiacl books on Confucian Classics, Shuyi 書疑, and Shiyi 詩疑.
The Yanjitu is mentioned in Wang Bai's biography in the official dynastic history Songshi 宋史, but it is not mentioned before the early 15th century which means that the book is quite probably wrongly attributed to Wang.
The text of just one fascicle presents Neo-Confucian teachings in the shape of 85 charts and diagrams. The printing quality of the original text is, however, quite modest. It can be found in the series Jinhua congshu 金華叢書 and Congshu jicheng chubian 叢書集成初編.
The five Confucian virtues (wuchang 五常) and their relation to the Five Social Relationships (wulun 五倫). Congshu jicheng edition, which is a reproduction of the Jinhua congshu version.