A card. According to the inquiry of China Bank official website, the Great Wall Jiangsu National Fitness Card is a joint debit card issued by China Bank, which belongs to a kind of card and is a special card. Jiangsu Great Wall National Fitness Card of Bank of China has many financial functions, such as one card with many users, ATM service, shopping and consumption, telephone banking, online banking, investment and wealth management, paying wages on behalf of others, and collecting and remitting expenses.