A boy wrote the girl's name with a red pen. What does this mean?

In the past, the emperor used a vermilion pen to approve the memorial, which was called Zhu Pi.

No one can give instructions in scarlet letters except the emperor.

Therefore, red stands for supreme power. I've been using it

The reason why the condemned man writes his name in red means that the supreme power irretrievably deprived him of his life.

You can't write a letter with a red pen, which means breaking off diplomatic relations.

Nowadays, people who have died usually write their names in red, just like on tombstones. They should always paint them in red. Even death row inmates who are about to be executed write their names in red ink.

For this reason, if you write someone else's name in red in your normal life, it is an infringement on others, or you break up with this person.