• When he became an adult, he became an official. He once served as a county leader and went to Shandong, Hebei, Henan and other places. Every time he went to a place, he investigated and studied the local agricultural production technology very carefully. He consulted some experienced old farmers and acquired a lot of agricultural production knowledge. After middle age, he returned to his hometown and started farming and animal husbandry, mastering a variety of agricultural production techniques.
CONTENT • The book consists of 10 volumes and 92 chapters,
which systematically summarize the farming and animal husbandry production experience of the laboring people in the middle and lower reaches of the Yellow River before the sixth century, the processing and storage of food, the utilization of wild plants, and the methods to control the famine.