Moving a warehouse is to change from one contract to another. In this process, if the position is not heavy, first buy the lots of the new contract m 1 1 2 you hold, and then even out your latest contract M11.

In this way, the warehouse was moved.

Of course, if your position is heavy. Only the contract of m111can be drawn first, and then the position of M 1 12 can be opened.

After moving the position, your hands should have the same number and direction.