Xigu fenjing 析骨分經 "Analysing bones and discerning meridians" is a book on meridians and the viscera written by the Ming-period 明 (1368-1644) scholar Ning Yiyu 寧一玉.
This book categorises and discusses the meridians associated with each anatomical region, explaining the structures of various organs (such as the throat, epiglottis, etc.) and the anatomical forms of the five viscera (wuzang 五臟) and six bowels (liufu 六腑). For certain meridian systems, the explanations are based on the twelve regular meridians; for regions along the anterior and posterior midlines, the text refers to the Conception (renmai 任脈) and Governing (dumai 督脈) vessels. It also cites original passages from the Huangdi neijing 黃帝內經 to explain concepts such as qi 氣, blood, and pulse.
The text is included in the series Shuofu xu 說郛續.