"Shennong Ben Cao Jing" is one of the earliest written medical books in China. Written during the Eastern Han Dynasty between 200 and 250 CE, it was the combined effort of TCM practitioners in the Qin and Han Dynasties who summarized, collected and compiled the results of pharmacological experience during their time periods. It was the first systematic summary of Chinese herbal medicine. Most of the pharmacological theories and compatibility rules and the proposed "seven emotions and harmony" principle have played a huge role in the practice of medicine for thousands of years in Chinese medicine. Therefore, it has long been a textbook for doctors and pharmacists to learn Chinese pharmacy, and it is also one of the necessary books for medical workers in China. The full text of "Shennong Ben Cao Jing" in English can be found online.