You still have to sign it, but you really don't need to enter a password to go abroad through credit card international organizations such as visa and master. This is normal for foreigners, but we find it strange. You only need to take care of your credit card, and CCB provides overseas card loss protection services. "Overseas card loss guarantee" is a card use guarantee service provided by CCB. If you report the loss in time and go through the relevant formalities after losing your card, you don't have to bear the losses caused by fraudulent use of overseas credit card transactions within 48 hours before the loss report, excluding off-site transactions such as internet/telephone. (Overseas secret cheque transactions through China UnionPay network are regarded as domestic transactions)