《楚辞·远游》云:“仍羽人于丹丘兮,留不死之旧乡。”说明羽人是不死之民。《山海经·大荒南经》云:“有不死之国,阿姓,甘木是食。”郭璞注云:“甘木即不死树,食之不老。”甘木当为甘蔗,砍了能再长,古人认为食之不老。《海外西经》记载此特别长寿之国时又称白民,白民长寿的原因还因为“有乘黄……乘之寿二千岁。”《辞源》谓乘黄即飞黄,一种神鸟,成语“飞黄腾达”即源于此。《大荒南经》云:“又有成山,甘水穷焉……有羽民 ”Chu Yuan Yuan travel“ cloud: ”still feather in Danqiu Come, stay immortal old township.“ ”Feather is immortal people. “Mountains and seas by the Great Wild South” cloud: “There are immortality country, surname, sweet wood is food. ” Guo Pu note cloud: “sweet wood is not dead trees, food is not old.” Able to longer, the ancients think food is not old. “Overseas Western” records this special longevity country, also known as white people, white people longevity reasons because “have by yellow ... ... by life of two thousand years. ” A kind of god bird, idioms “flying ” is derived from this. “Wild Wilderness,” said: "There are mountains, Gan Yan Yan Yan ... ... there are feathers