According to the research of modern zoologists, Haidongqing belongs to the family Eagle, and its scientific name is Falcon. It is a beautiful medium-sized raptor and a large falcon, so it is also called a giant falcon. The body length is 56 ~ 6 1 cm, the weight is about1310 ~ 2100g, and the feather color changes greatly, including dark, white and gray. Falcons are distributed in northern Europe, northern Asia and northern North America. It is extremely rare in China and distributed in central and eastern Jilin, eastern Heilongjiang, Wafangdian, Liaoning and Kashgar, Xinjiang. Among them, Jilin, Heilongjiang and Liaoning are resident birds or breeding birds, and Xinjiang is winter migratory birds. During the reign of the Khitans in northern China, Haidongqing was introduced into today's Inner Mongolia.