The new contract has been listed. The rise and fall of the new contract on the day of listing is twice that stipulated in the contract (Zheng Stock Exchange); Shanghai Stock Exchange is 22%. It is to facilitate the market to find a reasonable price on the day when the new contract is listed. Therefore, when the future of the variety is uncertain, the price of the new contract will change greatly when it goes on the market, which will easily lead to your so-called gap. Variety prices are stable, and those with strong persistence are not easy to appear.