Literature Reference: 秋风萧飒醉中别，白马嘶霜鴈叫烟。——《蔡平喜遇河阳马判官宽话别》 In the autumn wind, as we part in drunkenness, the white horse neighs in frost, and the wild geese cry amidst the smoke. Source from 'Cai Ping Xi Yu He Yang Ma Pan Guan Kuan Hua Bie'.
鴈:
叫: To cry out: to shout or yell.
Meaning: The cry of the wild geese symbolizes parting and nostalgia.