Zuojiashan site is located 500 m southwest of Gaojiatun Village in Nong’an County, Jilin Province. In 2015, due to river erosion, the Frontier Archaeology Research Center of Jilin University and other units carried out salvage archaeological excavations, and unearthed the bones of animals such as pigs, dogs, sheep and horses, etc. Through the identification and study of the unearthed animal remains, it was found that during the Neolithic Age, Zuojiashan site was active in summer and autumn, and that the livelihood mode of ancestors was mainly hunting, fishing and gathering, in addition to raising a small number of domestic animals. During the Liao and Jin Dynasties, the area was known as “Huanglongfu”. As a result of the analysis of unearthed animal remains from burials, it was assumed that they were closely related to the “burnt rice sacrifice” and other funeral customs of ethnic minorities, which provides important evidence for the cultural exchanges and integration between ethnic minorities in northern China of the Liao and Jin periods. The buried animal species also suggest that, to a certain extent, the livelihood mode of people living in the Yitong River Basin at the time was a combination of agriculture and animal husbandry accompanied by a small amount of fishing and hunting activities.