If I know someone who will often read my signature, and I have a good impression on him or other feelings, I will often change my signature to keep him informed of my developments.

If I want someone to pay attention to me and tell him my own dynamics in disguise, I will often change my signature.

Another kind is to change the signature written for the first time if it is not good enough, then change it if it is not good enough until it is satisfied.

Sometimes when you make a mistake, you don't find it. If you change it after you find it, it will become an old signature change.

Haha, you see, you should care about the person who changed his signature.