In China, the parents usually give their child two names, the nickname, also known as “the infant name” or “the childhood name”, and an official name. Nicknames are only used at home or among relatives or close friends. It is not polite to call strangers or the elder generations by nicknames. There was a folktale related to the names. It was said that in the palace of hell, a soul-catching devil always tried to catch the soul of smart babies. Once caught by him, the baby either died or became an idiot. As a result, some families gave babies plain or even vulgar nicknames to avoid the search of the devil. The more vulgar those things are, the easier and stronger their lives will be. Even now those vulgar nicknames are still hard in rural areas, such as Daniu(big bull), Tiedan(iron egg), Pangdun(fatty), Ergou(doggy), Daleng(fool), etc.