The quarterly contract will become the sub-week contract as the delivery time approaches, and the sub-week contract will also become the current week contract as the delivery time approaches. Just check the K-line chart of the corresponding contract type.

The current quarter contract is a type of delivery contract. The so-called delivery contract means that both parties to the futures contract agree to conduct contract delivery transactions at a specific price (futures price) at a specified time (delivery day). The delivery contract has weekly delivery and quarterly delivery. During the delivery time period, the market cannot be traded. There are slight differences between different platforms. The leverage of the delivery contract can be changed at a smaller multiple.