That is, after the transaction, what is the nature of the transaction and what impact it has on the position.

The sky looks red, because the bears are buying and buying is red.

Empty flat is a contract that actively closes the position.

Empty flat is active, so passive is corresponding: multi-flat.

Because bulls are for sale. If you buy or sell, you can make a deal.

It can also be open.

Because short positions are selling positions, it is also called short positions changing hands.

How flat the sky is, it is called double flat. The position is reduced. You can see that the number of this attribute is similar to -2-10.

Double open, empty open, multi-open. With the increase of positions, we can see that the property is +2+10, which is a number. Add as much as you want.

Changing hands does not affect the turnover.

Just understand what I told you above.

Just understand, you don't need to remember.

The same is true for futures. Just understand it and don't mix it up in futures.