How to set up a space to prohibit others from speaking and showing in their own space?

If you shield each other, you can't see each other's dynamics, and you can't talk about it. The operation is as follows:

1. Open the QQ space and click the "Settings" button in the upper right corner, as shown below:

2. After entering the settings, click the "Anti-harassment" option on the left, as shown below:

3. In the opened page, open "Settings" in "Don't Watch Who's Dynamic" under "Dynamic Mask" option, and add the friends you want to mask to complete the operation, as shown in the following figure: