K-line is a price line formed by four prices (high opening and low going). Futures will be delivered with the spot in the delivery month, and then the contract will come out for bidding in this month of next year. For example, the contract price 1405 for delivery is 4000, and the contract price 1505 for the next year after delivery is 2000, so there will be a big gap on the daily line, and the weekly line or the last cycle will be extended. This is how he was formed. How could he be eliminated?