The introduction of pork in Compendium of Materia Medica is that pigs eat indiscriminately, lie in the wrong place, ignore the sky and walk like a patient. Its nature is silver, its flesh is cold and its image is ugly. All animals are worse than this, and people are afraid to eat.

Omnivores have a variety of recipes to survive in the harsh competition for survival. Lying in the harbor is actually a captive pig, because there is no choice, wild boar will choose the warm and windy sunny slope to live. In addition, pigs like to roll in muddy water, which looks dirty. In fact, their skin is bare, and some muddy water can prevent insects. This is where pigs are smart.

The historical position of Compendium of Materia Medica;

With the development of social economy, an anti-traditional trend of thought was formed in the ideological and cultural field of Ming Dynasty. Under the influence of this ideological trend, many brilliant achievements have been made, especially in the field of science and culture, among which Li Shizhen's Compendium of Materia Medica is particularly prominent.

Compendium of Materia Medica has made outstanding achievements in animal and plant taxonomy and many other aspects. Li Shizhen first proposed to classify plants according to their morphology, characteristics, growth environment and performance, which was earlier than Linnai, the founder of western botanical classification 150 years ago.