What you want to ask is, can Monac card be used for more than three months? Can. According to a query on China Finance Network, the Monet card is valid for 3 years, so it can be used for more than three months. Monet Card is MasterCard. Monet Card is the Great Wall Monet World Mastercard jointly issued by Bank of China and MasterCard. This card has the theme of "The Master Takes You to See the World" and is the first famous painting art-themed credit card in China.