Shangxian belongs to Taoism and is a noun different from Xiaxian family. Folk immortals can be roughly divided into the following three types: the first one is passed down by the clan cosmic root field in a relay way, the second one has evil bones and pure blood, and the third one has a thick foundation and a heavy copy of the fairy's fate.
The word "attacking immortals from above" is a kind of respect for senior immortals by debut disciples, but there is no such specific title in Taoist classics. Just say that the Buddha above represents a god of a realm (cosmic space level). "The fairy above" is a common name, a general term and a conceptual understanding.