Salt-free girl is a kind of address for the queen of Qi. Because of its ugly appearance, it is called "salt-free", and later it is used to describe those women who are not very good-looking, but are kind and virtuous inside. The word "salt-free" comes from the biography of a fierce woman, and is often used by later generations to describe a woman who is not good-looking, but has a noble character. In addition, "Salt-free Girl" is also a title of TV series. Salt-free women, not only refer to the ugly orphans of historical figures, are now used to describe talented and unattractive women. And "no salt" is the homonym of "no face". Salt-free and persistent tumor are two extremely ugly women in ancient China.