I in the IC master contract stands for stock index futures, and C is the initials of China, which refers to the CSI 500 Index, which is a kind of stock index futures contract. It is called the three major futures contracts together with IF (Shanghai and Shenzhen 300 Index) and IH (Shanghai 50 Index). If you want to know the futures information in real time, I suggest you use galaxy futures One-Stop APP, which contains all kinds of hot information updated 24 hours a day, as well as the account diagnosis function, which can help you know your trading situation more quickly and professionally.