How is the legend of Shennong inventing agriculture recorded?

Among many myths and legends, the legend of Shennong inventing agriculture is the most interesting and convincing.

There are many legends and stories about Shennong. Qingmagou's Yi Shi volume four quotes from Zhou Shu: "When Shennong was in the middle, millet was sown. God cultivates crops, cultivates axes, hoes thunder and cultivates grass. Then the grain will help and the fruit will be hidden. " In the Jin Dynasty, Wang Jia's "Notes on Collection of Things" says: "When Emperor Yan (Shennong), there was a sparrow with nine ears of grain, which fell to the ground and was picked up by the emperor and planted in the field. The eater was old and never died." "The Collection of Geography of Han and Tang Dynasties and Shenghong" says: "Shennong was born in Licun, the northern boundary of Sui County, with 20 acres around and nine wells underground. According to legend, Shennong is fertile, nine wells are self-piercing, and one well is moving. "