In other words, it is enough to close the position before 5438+00, the last trading day of the futures contract in June.

Then buy 1 1 bullish or bearish futures contracts in the newly opened positions.

That is to say, with the passage of time, futures contracts will continue to fight back and move to new futures contracts, usually to the futures contracts with the largest trading volume and positions, to equalize the original positions and choose new main contracts to open positions.