Why do some girls hide qq space every once in a while and then cancel it every once in a while?

This is because girls sometimes post content that they don't want someone or some people to see. Maybe this secret is only temporary privacy, so it will be seen in a few days. It doesn't matter, everyone has privacy and may want to be noticed, because the more you hide, the more you want to be seen. When they hide, they want to see what they wrote. When they cancel hiding, people can't wait to see what it is!