What does the fortune teller mean when he says there is little red sand under his eyes?

This is the fallacy of the previous generation of fortune tellers, who used it to confuse the people with malicious fortune tellers and wanted to collect money to eat tofu from girls.

Red sand is the evil spirit of the body, which means that any woman who orders Meng Yue to be born on the Unitary Day, born on the fourth day in the middle, and born on the ugly day in a quarter of a month is a woman with red sand below.

What is red sand? Get married when you have your period.