蘇武
The story of Su Wu is at least part of the origin of the use of the image of a flying goose as a messenger (Alfreda Murck calls it the "locus classicus"), wherein the goose appears carrying a written message tied to its foot (perhaps symbolically) — a letter between two people separated so far seasonally north and south that a migrating goose could indeed be conceived as a plausible mode of communication.