Wild-swan, HUNG: large white water bird, symbol of the soul and its spiritual aspirations; wild swan and wild goose as emblems of the messenger and of conjugal fidelity; vast, profound, far-reaching, great; valued, learned.
This lexicographical entry defines wild goose / wild swan (HUNG) as a complex symbol uniting the soul’s spiritual aspiration, the function of messenger, and the ideal of conjugal fidelity within the I Ching’s symbolic vocabulary.
, I Ching: The Classic Chinese Oracle of Change, 1994thesis