The meaning of the main contract. It can be popularly understood as the largest transaction volume.

Continuity of the contract. Basically, the trend of the main contract is constantly integrated.

Because the turnover of the main contract is the largest. Sufficient liquidity. Suitable for speculation.

A few months passed. The main contract is also constantly changing.

Now you have a master contract. There is also a non-main contract. Even contracts that are close to delivery or just launched.

Then the transactions of these contracts are relatively few. Even if it's small. Poor liquidity.

So there is what you call continuous infinite days.

But it's endless. There is still a deal. Because if the price is outrageous to a certain extent, someone will do intertemporal arbitrage. Or futures spot arbitrage.

If there's anything you don't understand. You can send me questions. Hmm. How interesting