In fact, it is the spot contract and next month's contract of Hong Kong stocks, but the expression is different. Generally, futures contracts are expressed in terms of expiration months, but in many cases, it lets people know how much time is left.

The futures settlement system in Hong Kong refers to the settlement on the penultimate trading day of the due month. If you don't close the position, it will automatically close the position at the due settlement price. For example, the futures settlement date of July 20 13 contract is July 30.