I had not heard of this before and it was insane. Chinese foot binding is what moms and dads did to their little girls in China to make them more sensual so they could get a better price for them to marry off! The practice involved binding the foot tightly when the girl was little so that the foot never grew. This caused a lot of pain and deformity and life long disability, but was considered good practice, especially in rural China. A smaller foot was considered more erotic. Fortunately the practice has since stopped due to changing social norms and social pressures, but it was abhorrent! Here are some videos and discussion on it.