Hongcheng Card has a card number from China Construction Bank. Hongcheng Card and China Construction Bank are bank cards with card numbers. Debit cards have 19 digits and credit cards have 16 digits. The Hongcheng All-in-One Card is a city “all-in-one card” project in Nanchang, Jiangxi. Based on the construction of the existing urban “all-in-one card”, it upgrades the existing system and uses unified and standardized smart IC cards in the entire city of Nanchang to achieve integration with banks. The system's networking replaces cash settlement, allowing citizens to take buses, cars, taxis and other means of transportation at will, and realize the Hongcheng Card for tap water, gas, community property, consumption at public entertainment venues, shopping malls, etc. .