Why is the fountain pen so convenient that some people insist on using it?

For me, it's because pens are cheap, and a box of ink is enough for me to write for a year. I can't help it I am a poor man.

When many business elites talk about cooperation, they use pens. When you talk about a billion-dollar project, you take a 0.5 pen out of your pocket when you sign it. Will the other person's smile gradually disappear?

Details are important. It is not good for you to be so casual! The style should be higher.