Shanhu munan 珊瑚木難

Shanhu munan 珊瑚木難 "Corals difficult to sculpt" is a book on art written during the mid-Ming period 明 (1368-1644) by Zhu Cunli 朱存理 (1444-1513), courtesy name Xingfu 性甫, from Changzhou 長洲 (today part of Suzhou 蘇州苏州), Jiangsu. The calligrapher and poet Zhu was famous for his series hobby of inspecting and recording of rare books. He also wrote the biographical book Jingxiaolu 旌孝錄, the art book Tiewang shanhu 鐵網珊瑚 and the "brush-notes"-style (biji 筆記) essay Hecen suibi 鶴岑隨筆. The title of the book is derived from a sentence in the poem Meinü pian 美女篇 of Cao Zhi 曹植 (192-232).

The Shanhu munan has a length of 8 juan and presents notes (ti-ba 題跋) inscribed on paintings, and in some cases also poems he found on the artworks owned by the famous collectors of the time. Zhu's catalogue is the first book on art specified in recording inscriptions on artworks. The book mentioned many artworks that later found their way into the collections of the four aficionados and artists Wen Zhengming 文徵明 (1470-1559), Wen Jia 文嘉 (1501-1583), Wang Zhideng 王稚登 (王穉登, 1535-1612), and Wang Tengcheng 王騰程. Zhu Cunli did not simply record the texts on artworks, but added critical remarks on them, and thus helped to discern originals from forgeries. The catalogue is, however, not arranged chronologically, but according to collections.

The book was first printed in 1728. It is included in the series Siku quanshu 四庫全書 and Shiyuan congshu 適園叢書.