"Having baby girls is just as good as having baby boys." -In traditional Chinese society, boys, who are supposed to take care of the parents in their old age, are valued more highly than girls, who are married out of the family. In modern China this belief persists, especially in the countryside, despite larger gender equality advancements throughout general society. With the implementation of the 'one child policy', many couples choose to abort female fetuses until they become pregnant with a male. This problem has become serious enough to make it illegal for Chinese sonogram operators to disclose the sex of unborn babies. Hence the proliferation of this sort of signs.