Continuous because futures contracts are closed, that is, they all have fixed expiration dates, so if they are continuous, the price after three months will be displayed, so that their prices can form a continuous price graph for you to learn, but you can't trade. LME Copper March is Luntong March, which means that the average price of the last three months can be understood as mid-month, so he will not arrive, so his graphics will always be continuous, and his delivery needs to be supplemented.