I posted a post on the space and said it was not allowed to be shown to anyone, but why was it still seen?

You should be fine if you follow the steps below to reset it.

Method/steps

gt;01

First open QQ space, there is a gear-like thing in the upper right corner, click to set it up

gt;02

In "Permission Settings", you can set permissions for visitors. By default, all QQ friends can access their own QQ space. You can directly select "Everyone" or " "Only you" can set access permissions,

gt;03

In "Customize" in "Permission Settings", you can set "all QQ friends" or some QQ friends

gt;04

When setting the "Partial QQ Friends" permission, you can choose to specify the group

gt;05

It can also be set to answer Questions can only be accessed. You can add questions and set permissions under the "Customize" menu

gt; 06

You can also limit the access permissions of specific people. Under the "Customize" menu "Set the "Restricted List" under the menu

gt; 07

Enter the QQ number of the restricted person and add it.

gt;08

In addition to access, you can also limit access to the user's comment reply function. Under this function, you can choose everyone, QQ friends, only yourself, and designated people. Afterwards, the selected user will not be able to comment or reply in Talks, Photo Albums and Diaries

gt;09

You can also set not to view someone’s space updates, similarly In the anti-harassment menu, set it in dynamic shielding.