QQ signed to see PS. What does this mean?

Ps is explained in Chinese, but it is actually a polysemous word.

PS is the abbreviation of postscript (remark, which can also be interpreted as postscript and postscript)

1, (signature at the end of the letter) Furthermore, there is; P.S., P.S. , PS or p.s.

2. Appendices (to books, etc.). ); postscript

3.[ English] Conclusion (after news broadcast)

2. It is a kind of software for processing pictures, called PHOTOSHOP.

3, PS refers to Sony's game console play station.

4. PS refers to politics, that is, "politics", which is a branch of science;

In fact, there are many more, so I won't list them one by one.

But because it is in your friend's QQ signature, it should refer to the first kind, remarks and supplementary explanations.