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Zhongyufa 種芋法 "Methods of taro cultivation", also called Yujing 芋經 "The book of taro", is a small agricultural treatise written during the Ming period 明 (1368-1644) by Huang Shengceng 黃省曾 (1496-1546), courtesy name Mianzhi 勉之, style Wuyue Shanren 五嶽山人. He hailed from Wuxian 吳縣, Jiangsu and obtained the juren degree during the Jiajing reign-period 嘉靖 (1522-1566).
His book is divided into four chapters and quotes extensively from ancient books, except for the chapter Yifa 藝法, in which the author describes contemporary methods of cultivating taro, as he observed it in his environment.
The Zhongyufa or Yujing is included in the series Mingshi xueshan 明世學山, Bailing xueshan 百陵學山, Yimen guangdu 夷門廣牘 and Shuofu 說郛.
Huang is better known for his collection Nongpu sishu 農圃四書, which includes four writings on rice cultivation, sericulture, chrysanthemum culture, and fish-farming.