A long time ago, there was a man named Shennong. In order to find herbs to cure diseases, he tasted all kinds of herbs and found many edible and therapeutic herbs, so he was respected. One day, he tasted a kind of emerald grass. After eating, he suddenly foamed at the mouth and fell to the ground. Before he died, he realized that it was a kind of heartbroken grass. After the death of Shennong, someone recorded his deeds so that everyone could remember his merits and demerits.

Shennong pioneered traditional Chinese medicine.

In ancient times, people lived by eating wild fruits and raw animal clams, and the foul smell hurt their stomachs. People are often poisoned, sick and die, and their life span is very short. Emperor Yan Shennong preached to cure diseases, save lives and make people live longer. He traveled all over Sanxiang, tasted all kinds of herbs and learned about their medicinal properties.

In order to find a good medicine to cure diseases and save lives, he chewed almost all the plants. "Seventy poisons a day." In the process of tasting herbs, Shennong identified the herbs and found the traditional Chinese medicine with the functions of attacking poison, eliminating disease and preserving health. As a result, the people were "cured" and were no longer "sick", so their ancestors named him Shennong and Yandi, who died of tasting Lysimachia by mistake and were buried at the end of Changsha tea house.