The goose is considered to be one of the domesticated poultry species, derived from the wild swan or gray goose. Chinese domestic geese are descended from swan geese, while European domestic geese are descended from greylag geese. Domestic geese are roughly divided into two systems: Chinese geese and European geese. European geese originate from gray geese, while Chinese geese are domesticated from swan geese. Chinese geese originated in the Northeast. It is recorded in "Erya" that they were raised as early as 4,000 years ago. They are a very ancient goose species. Goose is considered to be a kind of poultry domesticated by humans (but it is not the first poultry domesticated by humans). It comes from wild swans or greylag geese. Chinese domestic geese are derived from swan geese, while European domestic geese are derived from greylag geese. The incubation period is generally 30 days. Goose is a species of duck in the order Anseriformes. Anatids are diverse animals, and the geese, swans, ducks, mandarin ducks, etc. that people often refer to are all Anatidae. Some of these animals were domesticated by humans into poultry, such as the mallard that became the domestic duck, the swan goose that became the Chinese goose, and the mute duck that became the Muscovy duck. Biologist Darwin mentioned in his book "Variation of Animals and Plants Under Domestic Breeding" that "Homer's epic mentions that geese were domestically raised as early as the ancient Greek era, and in the ancient Roman era In temples, people raised domestic geese as sacrifices to the gods." Some people believe that Egypt successfully domesticated domestic geese around 2000 BC based on the information left behind by ancient Egyptian paintings. There is a record in the ancient Chinese book Zhuangzi's "Nanhua Jing": "I ordered Shuzi to kill the wild geese and cook them. Shuzi asked, "One of them can sing and the other cannot, please kill him. The master said: Kill the one who can't sing." It shows that in 400 BC China already had mature domestic goose domestication technology years ago. swan goose, while the European domestic goose originated from the greylag goose. Wang Xizhi, the great calligrapher of the Jin Dynasty, liked to watch geese. "Book of Jin·Biography of Wang Xizhi" records an incident: "(Xizhi) loved geese. There was an orphan living in Kuaiji who raised a goose, which was good at singing. He sought the market but failed to find one, so he brought his relatives and friends with him. When the emperor heard that Xi was coming, he cooked it and waited for it. "There are records of emperors hunting geese in the Jin Dynasty. From a biological point of view, the goose is not an independent species. At best, it can only be regarded as a variant or subspecies of the swan or gray goose.