Goose is a bird species belonging to the family Anatidae in the order Anseriformes. Most goose breeds are derived from the grey geese and wild geese of the genus Goose. There are two subspecies of grey geese, the yellow billed grey goose and the pink billed grey goose, which are the ancestors of European geese. Hongyan is the ancestor of Chinese geese. Its distribution is almost entirely in the northern hemisphere, with the vast majority concentrated in the Eurasian continent. Geese are accustomed to foraging, playing, and mating in water, and only come to land when resting, laying eggs, and feeding; Likes group living, with an average lifespan of 30-50 years. Goose as a whole can be used as medicine, with a sweet taste and a calm nature. It can nourish qi and tonify deficiency, harmonize the stomach and quench thirst, and treat deficiency and weakness, as well as quench thirst; Goose bile can also treat old cough and asthma.

Pigs (Pig, Swine) are vertebrates, mammals, domestic animals, and ancient omnivorous mammals, mainly divided into domestic pigs and wild boars. Currently, people believe that pigs are the abbreviation for animals in the pig family, and pigs have different physical characteristics depending on their breed; Usually characterized by large ears, long head, short limbs, straight nose, fat body, and narrow waist and back. The hair is coarse and hard, and the fur colors are usually white, pink, black, brown, and floral. Domestic pigs are a subspecies of wild boars that have been domesticated by humans. They have shorter tusks than wild boars and are one of the domesticated livestock by humans.