For the convenience of analysis, a continuous or triple contract is added to the futures contract, in which sugar is the trading contract one month after the current delivery, and the triple contract is the third trading contract after the current delivery, which cannot be traded and is for analysis reference only.

As for why we should set this up, it is because of our long-term summary of the law of market changes. Futures contracts one month and three or four months after the current delivery month are the contracts with the closest price to the spot expected price, and they are also the most active contracts, and most of them are also the main contracts in a variety. Therefore, we put such contract prices together continuously to reflect the long-term trend. So the data of "XX continuous", "XX even three, even four" appeared. The main contract refers to the contract with the most active positions and transactions.