Futures continuity is the K-line connection of the contract with the largest trading volume, that is to say, which contract has the largest trading volume, and the K-line on futures continuity is the K-line diagram of this contract.

For example, it's March, and if it's July with the largest contract volume, the continuous chart shows the K line of the July contract. The contract turnover was the largest in May and September, and the continuous chart shows the K-line chart in September. And so on.

The continuous chart is not the K-line chart of a certain month, but the K-line chart composed of the main contracts with the largest turnover.

K-line chart of the main contract with the largest turnover of vegetable oil futures contracts.