Source: 1, (signed at the end of the letter), and; P.S., P.S. , PS or p.s.

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

3.[ English] Conclusion (after news broadcast)

PS stands for:

1 PS refers to postscript, meaning "remarks and notes";

2 PS refers to Photoshop, a famous professional image processing software, which is used by almost all advertising companies and graphic design companies;

3 PS refers to Sony's play station, and subsequent versions include PS2, PSP and PS3.

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

5 PS refers to polystyrene, which is a thermoplastic synthetic resin. Its biggest application field is the electronic/electrical appliance industry. ...

In short, PS has many meanings, so we should understand it slowly ~ ~ ~