Generally speaking, there are few gaps that exceed the upper price limit. If this happens, it means that the last trading day will close with the daily limit, and then the next trading day will expand the version (increase the daily limit), which will lead to extreme situations in the market. This situation may happen. If you haven't closed your position in the previous trading day, and the position in your hand is just opposite to the market direction, then you should find an opportunity to close your position. If it is sealed on the board at the opening, it is still necessary to hang the order first and wait in line for the transaction. If you hold a position, you have to compensate the exchange for the loss.

I read your medical records. That's because the last futures contract has been delivered, and the next futures contract appears, such as coking coal j 1505. Before the gap, the trend of this section of K line is j 1405. 14 The contract expires in May, and the next continuous futures contract J 1505 appears. In this contract, the K-line chart with the number 05 represents the K-line in May of all years.