Black marker, if you want to keep it, I think it's good to sign it on your clothes. In fact, you can sign anywhere, and some people have no place to sign, depending on your preferences. Most stars have to sign their names because they are in a hurry. If they are not in a hurry, they may draw a smiling face or something. If you are not in a hurry, you can write an encouraging sentence for you, such as xx needs to refuel, and so on. And when I see the stars, I will take pictures first! ! Hey, hey, personal thoughts.