First of all, it is a clear rule of the bank for customers to sign clear block letters on bank documents, and so is the accounting system. Moreover, if you sign a personalized signature and can't identify what you are signing, then if someone takes the opportunity to sign a name other than my own, the bank will be very passive in future disputes, so the signature must be clear and standardized, not only personalized, but also traditional. The correct signature should be in block letters and consistent with your ID card. If your signature is not standardized, the teller must ask you to re-sign. Some banking services (that is, the documents you signed) have to be handed in at night, and there is a special person to review them. If the signature name is not standardized, the teller's salary will be deducted, so please be considerate and try to sign a formal name.