A single Swan
Gu Fu Shan Hu is a Chinese idiom. Its pinyin is Gu ǎ f ú D ā NH ú, which means that it was originally the name of an ancient qin tune and later refers to a person who lost his spouse.
source
Volume 5 of miscellaneous records of Xijing: "Liu Daoqiang, a Qi man, is good at playing the piano, and can make a single Swan and few ducks. All the listeners are sad and can't take pictures of themselves. "
usage
A person who is widowed
Chinese PinYin : guǎ fú dān hú
A single Swan