白云孤飞

Explanation: Metaphor of a guest in his home, miss their parents. 　　Usage: The main predicate; as object, attribute; that parents who miss 　　Source: "Old Tang Di Renjie Biography": "Do not their parents in the hayang industry, Yen Kit and the state visit, board the Taihang Mountains, South Baiyun Gu saw flying around saying that: 'my parents are home, under this cloud.' Looking standing a long time. cloud is moving line. " 　　Examples: Off in the thinking pro-cloud ~. (Song Hu Jizong "book made the story Astronomy Class") Thesaurus:  Bai township Parent homes