What does qq mean by hiding this dynamic?

Hiding this dynamic is hiding this dynamic so that others can't see it. The steps are as follows:

1, the first step is to open the mobile QQ and enter the dynamic.

2. Step 2: Find a friend who needs to be set to talk, and click on the top right corner.

3. The third step is to choose to hide this dynamic in the open layer.

4. Step 4: According to the prompt, select OK.