This means that you can choose the appearance of a credit card. If you do not choose the appearance, it will be the default, which is random.

Shanghai Pudong Development Bank Co., Ltd. (hereinafter referred to as: Pudong Development Bank) was established with the approval of the People's Bank of China on August 28, 1992, opened on January 9, 1993, and was listed on the Shanghai Stock Exchange in 1999. It is a state-controlled national joint-stock commercial bank listed on the stock market (stock trading code: 600000), with its head office located in Shanghai.