What does it mean to write a person's name in red ink?
Writing in red means breaking up, and there is a certain meaning of death. Many people who write "blood books" have a dying heart and show loyalty. Of course, this statement is unscientific and just a reference.
The ancient yamen was also used. In the past, when a prisoner was executed, he used chicken blood as ink and wrote his name. Later, he gradually began to use the red pen.
Many times, people say that "it is unlucky to write names in red pen" comes from here, because names written in red pen were all people who were going to be executed in ancient times.