There was a man called Guo Han in the Tang Dynasty(618-907).
One summer night, when the moon was very bright he suddenly saw a girl descending(下降) slowly from the sky. He observed the girl closely, and found that the dress she was wearing was seamless(無縫的) . He was puzzled, and asked why. The girl answered,"Heavenly clothes are not sewn with needle and thread."
This idiom is used metaphorically to indicate the flawless handling of things. It can also be used to indicate a perfectly written poem or other literary article.

傳說古代太原人郭翰在夏夜里乘涼,見一個仙女從天上下來,她身穿白衣,美麗絕倫。她告訴他她名叫織女。郭翰仔細(xì)欣賞織女的衣裳渾然一體,竟看不出一絲線縫,好奇問織女??椗鸬溃骸疤煲卤痉轻樉€為也?!?br> 神話傳說,仙女的衣服沒有衣縫。比喻事物周密完善,找不出什么毛病。
?