It's okay! If it is a domestic card, it is clean and rewritten. Because domestic cards are generally paid in secret, sometimes they don't even look at the signature, even if they look at the password. If it is a wild card, it is usually signed. If the signature is wrong, it will not be paid. I used to swipe my card at the Macau casino, but if my signature was wrong, I wouldn't lose it. There is no problem in China, please feel free to use it!