Wrong is wrong.
There is no such thing as a pig's hair wind, so I guess the pig's hair wind you're referring to is the newborn's cui-ui hair. Newborns are born, there will be a lot of hair, the back is more obvious, called cui hair, it belongs to the normal physiological phenomenon, in general, this cui hair will gradually fall off naturally, do not need special treatment. But some local custom is to scrape cui hair, they call it scraping pig hair wind, we do not recommend parents to do so, because this will make the baby's skin follicles damaged, leading to infection, and even cause sepsis danger. If the baby really feel uncomfortable, crying more than, parents can also go to the regular hospital to buy a kind of thing called paraffin oil, and then use a cotton ball dipped in paraffin oil, wipe along the baby's pores.