宋代  北宋(1048 AD～1098 AD)

 Agriculture class： 《禾谱》 Read works of Ceng Anzhi at 百家争鸣

　　An only have a very love of agriculture, especially crops like research. He often went to farm to observe the crop, always talk with some experienced farmer. He visited a number of farmer to collect a large number of crop varieties, many rice varieties on the name, origin, temperament and the planting, cultivation methods, how local conditions, etc., are all made a detailed investigation. Evening, sitting in a large oil lamp beans, refer to the previous results, finishing the day's notes, often to the middle of the night, sometimes up to sixth grade once.
　　Over time, his body more and more impossible, eyesight is getting worse, plus many literati love was on the peony, lychee, tea and other books for established spectrum, with the exception of agriculture officials not seen. So, he decided to resign from the magistrate, return to the "real estate Golden Harvest, and air born," the home of Taihe, dedicated to agricultural research. Many people in a proper way of insight on some of his move to figure out he said:
　　"'Farmers who, the government of the first also.' ... ... The only gentleman wishes of the crisis settlement, and it could be safe; get justice for being without discomfort, and it could stop. 'Security only' word, is I like! "Upon hearing all friends, was deeply moved.
　　Had just returned to Taihe security after painstaking research of agriculture. The original notes were to rearrange the same time, he went on the local rice, soybean, peanut, rapeseed, vegetables and other crops in the name, characteristics, cultivation techniques, one by one in detail, writing the "Wo Spectrum," a book . Meizhou Shi arrived in Taihe, see Tseng's "Wo Spectrum" section, said: "Man not only gentle, things are informative. Xi be missing, not spectrum of agricultural devices also." Thus, as "Ma Song Yang," Phase gift. "Yeung Ma" - Agricultural machinery: the "Yu-date as the abdomen, to Catalpa Tong is back, such as boat Aung its end to end, the back cover, such as tile, so that the two thigh, compared to slouch while the author, work and rest with a half carry on." However, Jun had been blind, no writing ability, I would like to "Yeung Ma Song" attached "Wo spectrum" in the end. Hundred years later, "Wo spectrum" before the magistrate by his grandniece Leiyang the move continued into. The book has Lei Geng, hoe, bucket trucks, enterprises, mow, Dou Hu, storehouses, Jue class, etc, also attached to the Miscellanies, and has become following the Northern Wei Gu Sixie "Arts for the People," another one after the ancient writings of Agricultural Sciences. Song Jiatai six years (1206), will greatly benefit the country the public week, "Wo Spectrum," Preface, praised the book: "Examination of Scripture are, Senate combined ancient and modern, the system were all prepared, it can be added as the book of Peter, as the Soviet Union The Beauty of the public. "
　　"Wo Spectrum," a book on the local, on the south remains to agricultural development in the country, played a invaluable role in enabling the general population can live and work. "Min only chaos" is the honest people of integrity have been public.