Change the month as soon as possible, because there are many settlement documents a few days before the last trading day, and changing the month at the last minute will cause mutual trampling, aggravate price fluctuations and increase losses. It is recommended to start deployment one month before the transfer to the settlement month, and try to leave more than ten days before the transfer to the settlement month.

Moving a position for one month is to close the original futures contract near the delivery month and re-establish the futures contract position in the most active month (the month after delivery).