How to hide the gender, region and age under the personal data of mobile QQ from others?

1. Open the QQ interface first, and then click the avatar, as shown below:

2. Open the data frame and click Permission Settings, as shown below:

3. Open the permission settings under your profile, as shown in the figure below:

4. Click on the gender and age in the basic information, as shown below:

6. Set "Visible to all" to "Visible only to yourself", as shown below.