Not safe. It is not safe to brush the bill of flying pig on salted fish. No brushing. Many people have been cheated by the part-time job of brushing a bill and don't want to lose a lot of money. There are also many scammers on the Internet now. Many stay-at-home mothers or elderly people just make money by swiping their bills. This is illegal and can't be done. If family members or friends around them must stop it in time to avoid losing the plane, then the construction test will be very strong, and once it is detected, the account will be banned.