Because geese are migratory birds, their breeding grounds are in Europe and Western Australia. When the weather turns cold, geese flock to the south for the winter. As far away as Southeast Asia and the Nanyang Islands. When migrating, geese form a line or herringbone. During the migration, they communicate with each other by singing. During the night, there are special geese on guard. Once they find the enemy's situation, they will scream and make the geese fly into the air quickly.
On the way to the south, the stopped geese often feed on land, causing certain damage to the newly broken wheat seedlings. After arriving at the wintering ground, they began to mate, flew north to the breeding ground the next year, and laid eggs in May and June.
Wild geese use reeds and weeds to build nests at the water's edge, beaches and other places. Generally, females lay 4-6 eggs, while females hatch eggs and males guard them. The incubation period is usually 4-5 weeks. The newly hatched geese are full of feathers, can walk and bark, and their parents have no feeding habits. After 3 days, goslings can swim with their parents for food. By the end of July, young geese grow wings and live with adult birds.
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Seven-character poems include seven-character ancient poems, seven-character metrical poems and seven-character quatrains. Seven-character style is a genre of ancient poetry, which is mainly composed of seven words or seven sentences per sentence. It originated from folk songs.
In the pre-Qin period, in addition to the seven-character sentence patterns in The Book of Songs and Songs of the South, Xiangcheng Pian in Xunzi was a seven-character miscellaneous verse written by imitating folk songs.
In the Western Han Dynasty, there were seven popular rhymes, such as Sima Xiangru's Fan Jiang and You's Jiupian, as well as Louhu Song and Shangjun Song contained in Hanshu.
There were many seven-character miscellaneous songs in the Eastern Han Dynasty. For example, Mai Yao, Wu Zaicheng (Sima Biao's Five Elements of Han History) and Huan Er Ge (Bao Puzi's Shen Ju) at the end of the Eastern Han Dynasty are all vivid, popular and fluent folk works in seven languages. According to legend, Emperor Wu of the Han Dynasty once called his ministers together and made a seven-character couplet of Bailiangtai. But according to later research, this is an untrue statement and unreliable.