So the a tag for the specific kind of personal statement has been synonymized to the sop tag*. This is the decision of the community, and I have no objection. I just want to know if there is a way to quickly find the questions I need, or there is no way to filter them? To quote myself:
For those who fall into the situation like me, the feeling of having a distinction is very clear. It's also a big plus for future visitors who only want to read questions about this.